Toyota Sienna (2020 year). Manual in english - part 5

 

  Index      Toyota     Toyota Sienna (2020 year). Manual in english

 

Search            copyright infringement  

 

 

 

 

 

 

 

 

 

 

 

Content      ..     3      4      5      6     ..

 

 

 

Toyota Sienna (2020 year). Manual in english - part 5

 

 

270

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Changing the pre-collision warning timing

The  pre-collision  warning  timing  can  be  changed  on 
(

P. 541) of the multi-information display.

The  operation  timing  setting  is  retained  when  the  engine  switch  is
turned off.

Far

The  warning  will  begin  to
operate  earlier  than  with  the
default timing.

Middle

This is the default setting.

Near

The  warning  will  begin  to
operate  later  than  with  the
default timing.

1

2

3

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

271

4-5. Using the driving support systems

4

Drivin

g

Operational conditions

The pre-collision system is enabled and the system determines that the pos-
sibility of a frontal collision with a vehicle or pedestrian is high.
Each function is operational at the following speeds:

Pre-collision warning:
• Vehicle speed is between approximately 7 and 110 mph (10 and 180 km/h).

(For detecting a pedestrian, vehicle speed is between approximately 7 and
50 mph [10 and 80 km/h].)

• The  relative  speed  between  your  vehicle  and  the  vehicle  or  pedestrian

ahead is approximately 7 mph (10 km/h) or more.

Pre-collision brake assist: 
• Vehicle speed is between approximately 20 and 110 mph (30 and 180

km/h).  (For  detecting  a  pedestrian,  vehicle  speed  is  between  approxi-
mately 20 and 50 mph [30 and 80 km/h].)

• The  relative  speed  between  your  vehicle  and  the  vehicle  or  pedestrian

ahead is approximately 20 mph (30 km/h) or more.

Pre-collision braking:
• Vehicle speed is between approximately 7 and 110 mph (10 and 180 km/h).

(For detecting a pedestrian, vehicle speed is between approximately 7 and
50 mph [10 and 80 km/h].)

• The  relative  speed  between  your  vehicle  and  the  vehicle  or  pedestrian

ahead is approximately 7 mph (10 km/h) or more.

The system may not operate in the following situations:

If a battery terminal has been disconnected and reconnected and then the
vehicle has not been driven for a certain amount of time

If the shift lever is in R

If  VSC  is  disabled  (only  the  pre-collision  warning  function  will  be  opera-
tional)

Pedestrian detection function

The pre-collision system detects pedestri-
ans based on the size, profile, and motion
of  a  detected  object.  However,  a  pedes-
trian  may  not  be  detected  depending  on
the  surrounding  brightness  and  the
motion,  posture,  and  angle  of  the
detected  object,  preventing  the  system
from operating properly. (

P. 276)

-------------------------------------------------------------------------------------------------------------------------------------------------------------

272

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Cancelation of the pre-collision braking

If either of the following occur while the pre-collision braking function is oper-
ating, it will be canceled:

The accelerator pedal is depressed strongly.

The steering wheel is turned sharply or abruptly.

Conditions under which the system may operate even if there is no pos-
sibility of a collision

In  some  situations  such  as  the  following,  the  system  may  determine  that
there is a possibility of a frontal collision and operate.
• When passing a vehicle or pedestrian
• When changing lanes while overtaking a preceding vehicle
• When overtaking a preceding vehicle that is changing lanes

• When rapidly closing on a vehicle ahead
• If the front of the vehicle is raised or lowered, such as when the road sur-

face is uneven or undulating

• When  approaching  objects  on  the  roadside,  such  as  guardrails,  utility

poles, trees, or walls

• When overtaking a preceding vehicle

that is making a left/right turn

• When passing a vehicle in an oncom-

ing  lane  that  is  stopped  to  make  a
right/left turn

• When driving on a road where relative

location  to  vehicle  ahead  in  an  adja-
cent lane may change, such as on a
winding road

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

273

4-5. Using the driving support systems

4

Drivin

g

• When driving on a narrow path surrounded by a structure, such as in a

tunnel or on an iron bridge

• When there is a metal object (manhole cover, steel plate, etc.), steps, or a

protrusion on the road surface or roadside

• When rapidly closing on an electric toll gate barrier, parking area barrier,

or other barrier that opens and closes

• When using an automatic car wash

• When  there  is  a  vehicle,  pedestrian,

or  object  by  the  roadside  at  the
entrance of a curve

• When 

crossing 

pedestrian

approaches very close to the vehicle

• When passing through a place with a

low structure above the road (low ceil-
ing, traffic sign, etc.)

• When  passing  under  an  object  (bill-

board, etc.) at the top of an uphill road

-------------------------------------------------------------------------------------------------------------------------------------------------------------

274

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

• When the vehicle is hit by water, snow, dust, etc. from a vehicle ahead
• When driving through steam or smoke
• When there are patterns or paint on the road or a wall that may be mis-

taken for a vehicle or pedestrian

• When  driving  near  an  object  that  reflects  radio  waves,  such  as  a  large

truck or guardrail

• When driving near a TV tower, broadcasting station, electric power plant,

or  other  location  where  strong  radio  waves  or  electrical  noise  may  be
present

Situations in which the system may not operate properly

In some situations such as the following, a vehicle may not be detected by
the radar sensor and camera sensor, preventing the system from operating
properly:
• If an oncoming vehicle is approaching your vehicle
• If a vehicle ahead is a motorcycle or bicycle
• When approaching the side or front of a vehicle
• If a preceding vehicle has a small rear end, such as an unloaded truck

• If a vehicle ahead is carrying a load which protrudes past its rear bumper

• If a vehicle ahead is irregularly shaped, such as a tractor or side car
• If the sun or other light is shining directly on a vehicle ahead
• If a vehicle cuts in front of your vehicle or emerges from beside a vehicle

• When  driving  through  or  under

objects  that  may  contact  the  vehicle,
such as thick grass, tree branches, or
a banner

• If a preceding vehicle has a low rear

end, such as a low bed trailer

• If a vehicle ahead has extremely high

ground clearance

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

275

4-5. Using the driving support systems

4

Drivin

g

• If a vehicle ahead makes an abrupt maneuver (such as sudden swerving,

acceleration or deceleration)

• When suddenly cutting behind a preceding vehicle

• When  driving  in  inclement  weather  such  as  heavy  rain,  fog,  snow  or  a

sandstorm

• When the vehicle is hit by water, snow, dust, etc. from a vehicle ahead
• When driving through steam or smoke
• When driving in a place where the surrounding brightness changes sud-

denly, such as at the entrance or exit of a tunnel

• When a very bright light, such as the sun or the headlights of oncoming

traffic, shines directly into the camera sensor

• When the surrounding area is dim, such as at dawn or dusk, or while at

night or in a tunnel

• After the engine has started the vehicle has not been driven for a certain

amount of time

• While making a left/right turn and for a few seconds after making a left/

right turn

• While driving on a curve and for a few seconds after driving on a curve
• If your vehicle is skidding

• If the wheels are misaligned
• If a wiper blade is blocking the camera sensor
• The vehicle is wobbling.
• The vehicle is being driven at extremely high speeds.
• When driving on a hill 
• If the radar sensor or camera sensor is misaligned

• When  a  vehicle  ahead  is  not  directly

in front of your vehicle

• If the front of  the vehicle  is  raised  or

lowered

-------------------------------------------------------------------------------------------------------------------------------------------------------------

276

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

In some situations such as the following, sufficient braking force may not be
obtained, preventing the system from performing properly:
• If the braking functions cannot operate to their full extent, such as when

the brake parts are extremely cold, extremely hot, or wet

• If the vehicle is not properly maintained (brakes or tires are excessively

worn, improper tire inflation pressure, etc.)

• When the vehicle is being driven on a gravel road or other slippery sur-

face

Some pedestrians such as the following may not be detected by the radar
sensor and camera sensor, preventing the system from operating properly:
• Pedestrians shorter than approximately 3.2 ft. (1 m) or taller than approx-

imately 6.5 ft. (2 m)

• Pedestrians wearing oversized clothing (a rain coat, long skirt, etc.), mak-

ing their silhouette obscure

• Pedestrians who are carrying large baggage, holding an umbrella, etc.,

hiding part of their body

• Pedestrians who are bending forward or squatting
• Pedestrians who are pushing a stroller, wheelchair, bicycle or other vehi-

cle

• Groups of pedestrians which are close together
• Pedestrians who are wearing white and look extremely bright
• Pedestrians in the dark, such as at night or while in a tunnel
• Pedestrians  whose  clothing  appears  to  be  nearly  the  same  color  or

brightness as their surroundings

• Pedestrians near walls, fences, guardrails, or large objects
• Pedestrians who are on a metal object (manhole cover, steel plate, etc.)

on the road

• Pedestrians who are walking fast
• Pedestrians who are changing speed abruptly
• Pedestrians running out from behind a vehicle or a large object
• Pedestrians who are extremely close to the side of the vehicle (outside

rear view mirror, etc.)

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

277

4-5. Using the driving support systems

4

Drivin

g

If the PCS warning light flashes or illuminates and a warning message is
displayed on the multi-information display

The pre-collision system may be temporarily unavailable or there may be a
malfunction in the system.

In  the  following  situations,  the  warning  light  will  turn  off,  the  message  will
disappear and the system will become operational when normal operating
conditions return:
• When the radar sensor or camera sensor or the area around either sen-

sor is hot, such as in the sun

• When the radar sensor or camera sensor or the area around either sen-

sor is cold, such as in an extremely cold environment

• When a front sensor is dirty or covered with snow, etc.
• When the part of the windshield in front of the camera sensor is fogged up

or covered with condensation or ice (Defogging the windshield: 

P. 336)

• If the camera sensor is obstructed, such as when the hood is open or a

sticker is attached to the windshield near the camera sensor

If  the  PCS  warning  light  continues  to  flash  or  remains  illuminated  or  the
warning message does not disappear even though the vehicle has returned
to normal, the system may be malfunctioning. Have the vehicle inspected by
your Toyota dealer immediately.

If VSC is disabled

If VSC is disabled (

P. 323), the pre-collision brake assist and pre-collision

braking functions are also disabled.

The PCS warning light will turn on and “VSC Turned Off Pre-Collision Brake
System Unavailable” will be displayed on the multi-information display.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

278

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

LDA (Lane Departure Alert with steering 

control)

When driving on highways and freeways with white (yellow) lines, this
function alerts the driver when the vehicle might depart from its lane
and provides assistance by operating the steering wheel to keep the
vehicle in its lane.
The  LDA  system  recognizes  visi-
ble  white  (yellow)  lines  with  the
camera sensor on the upper por-
tion of the front windshield.

Lane departure alert function

When  the  system  determines
that  the  vehicle  might  depart
from  its  lane,  a  warning  is  dis-
played  on  the  multi-information
display and the warning buzzer
sounds to alert the driver.

When  the  warning  buzzer
sounds,  check  the  surrounding
road  situation  and  carefully
operate  the  steering  wheel  to
move  the  vehicle  back  to  the
center of the lane.

Summary of functions

Functions included in LDA system

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

279

4-5. Using the driving support systems

4

Drivin

g

Steering control function

When  the  system  determines
that  the  vehicle  might  depart
from  its  lane,  the  system  pro-
vides  assistance  as  necessary
by operating the steering wheel
in  small  amounts  for  a  short
period of time to keep the vehi-
cle in its lane.

If  the  system  detects  that  the
steering  wheel  has  not  been
operated  for  a  fixed  amount  of
time or the steering wheel is not
being  firmly  gripped,  a  warning
is  displayed  on  the  multi-infor-
mation  display  and  the  function
is temporarily canceled.

Vehicle sway warning function

When the vehicle is swaying or
appears as if it may depart from
its  lane  multiple  times,  the
warning  buzzer  sounds  and  a
message  is  displayed  on  the
multi-information display to alert
the driver.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

280

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

WARNING

Before using LDA system

Do not rely solely upon the LDA system. The LDA system does not auto-
matically drive the vehicle or reduce the amount of attention that must be
paid to the area in front of the vehicle. The driver must always assume full
responsibility for driving safely by paying careful attention to the surround-
ing  conditions and operating the steering wheel to  correct the  path  of  the
vehicle. Also, the driver must take adequate breaks when fatigued, such as
from driving for a long period of time.
Failure to perform appropriate driving operations and pay careful attention
may lead to an accident, resulting in death or serious injury.

To avoid operating LDA system by mistake

When not using the LDA system, use the LDA switch to turn the system off.

Situations unsuitable for LDA system

Do not use the LDA system in the following situations.
The system may not operate properly and lead to an accident, resulting in
death or serious injury.

A spare tire, tire chains, etc. are equipped.

When the tires have been excessively worn, or when the tire inflation pres-
sure is low.

Tires  which  differ  by  structure,  manufacturer,  brand  or  tread  pattern  are
used.

Objects  or  patterns  that  could  be  mistaken  for  white  (yellow)  lines  are
present on the side of the road (guardrails, curbs, reflective poles, etc.).

Vehicle is driven on a snow-covered road.

White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.

Asphalt  repair  marks,  white  (yellow)  line  marks,  etc.  are  present  due  to
road repair.

Vehicle is driven in a temporary lane or restricted lane due to construction
work.

Vehicle is driven on a road surface which is slippery due to rainy weather,
fallen snow, freezing, etc.

Vehicle is driven in traffic lanes other than on highways and freeways.

Vehicle is driven in a construction zone.

Vehicle is towing a trailer or another vehicle.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

281

4-5. Using the driving support systems

4

Drivin

g

Press  the  LDA  switch  to  turn  the
LDA system on.

The  LDA  indicator  illuminates  and
a  message  is  displayed  on  the
multi-information display.
Press the LDA switch again to turn
the LDA system off.
When the LDA system is turned on
or off, operation of the LDA system
continues  in  the  same  condition
the next time the engine is started.

WARNING

Preventing  LDA  system  malfunctions  and  operations  performed  by
mistake

Do not modify the headlights or place stickers, etc. on the surface of the
lights.

Do  not  modify  the  suspension  etc.  If  the  suspension  etc.  needs  to  be
replaced, contact your Toyota dealer.

Do not install or place anything on the hood or grille. Also, do not install a
grille guard (bull bars, kangaroo bar, etc.).

If your windshield needs repairs, contact your Toyota dealer.

Turning LDA system on

-------------------------------------------------------------------------------------------------------------------------------------------------------------

282

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

LDA indicator
The illumination condition of the
indicator  informs  the  driver  of
the system operation status.

Illuminated in white: 
LDA system is operating.
Illuminated in green: 
Steering  wheel  assistance  of  the
steering  control  function  is  operat-
ing.
Flashing in amber: 
Lane  departure  alert  function  is
operating.

Operation display of steering wheel operation support
Indicates  that  steering  wheel  assistance  of  the  steering  control
function is operating.
Lane departure alert function display
Displayed  when  the  multi-information  display  is  switched  to  the
driving assist system information screen.

Indications on multi-information display

1

2

3

Inside  of  displayed  white  lines
is white

Inside of displayed white lines
is black

Indicates that the system is recog-
nizing  white  (yellow)  lines.  When
the  vehicle  departs  from  its  lane,
the  white  line  displayed  on  the
side  the  vehicle  departs  from
flashes amber.

Indicates  that  the  system  is  not
able  to  recognize  white  (yellow)
lines or is temporarily canceled.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

283

4-5. Using the driving support systems

4

Drivin

g

Operation conditions of each function

Lane departure alert function
This function operates when all of the following conditions are met.
• LDA is turned on.
• Vehicle speed is approximately 32 mph (50 km/h) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane is approximately 9.8 ft. (3 m) or more.
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or around a gentle curve with a radius

of more than approximately 492 ft. (150 m).

• No system malfunctions are detected. (

P. 286)

Steering control function
This function operates when all of the following conditions are met in addi-
tion to the operation conditions for the lane departure alert function.

• Setting for “Steering Assist” in 

 on the multi-information display is

set to “On”. (

P. 92)

• Vehicle is not accelerated or decelerated by a certain amount or more.
• Steering  wheel  is  not  operated  with  a  steering  force  level  suitable  for

changing lanes.

• ABS, VSC, TRAC and PCS are not operating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not displayed.(

P. 284)

Vehicle sway warning function
This function operates when all of the following conditions are met.

• Setting for “Sway Warning” in 

 on the multi-information display is

set to “On”. (

P. 92)

• Vehicle speed is approximately 32 mph (50 km/h) or more.
• Width of traffic lane is approximately 9.8 ft. (3 m) or more.
• No system malfunctions are detected. (

P. 286)

-------------------------------------------------------------------------------------------------------------------------------------------------------------

284

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Temporary cancellation of functions

When the operation conditions are no longer met, a function may be tempo-
rarily canceled. However, when the operation conditions are met again, oper-
ation of the function is automatically restored. (

P. 283)

Steering control function

Depending  on  the  vehicle  speed,  lane  departure  situation,  road  conditions,
etc., the driver may not feel the function is operating or the function may not
operate at all.

Lane departure alert function

The warning buzzer may be difficult to hear due to external noise, audio play-
back, etc.

Hands off steering wheel warning

Depending on the vehicle and road conditions, the warning may not operate.

Vehicle sway warning function

Depending on the vehicle and road conditions, the warning may not operate.

White (yellow) lines are only on one side of road

The  LDA  system  will  not  operate  for  the  side  on  which  white  (yellow)  lines
could not be recognized.

When  the  system  determines  that  the
driver  has  removed  their  hands  from  the
steering  wheel  while  the  steering  control
function is operating, a warning message
urging  the  driver  to  hold  the  steering
wheel and the symbol shown in the illus-
tration are displayed on the multi-informa-
tion display.
If the driver continues to keep their hands
off of the steering wheel, a warning mes-
sage and the symbol shown in the illustra-
tion are displayed on the multi-information
display,  and  the  function  is  temporarily
canceled.  This  warning  also  operates  in
the  same  way  when  the  driver  continu-
ously  operates the  steering  wheel  only a
small  amount.  Always  keep  your  hands
on  the  steering  wheel  when  using  this
system, regardless of warnings.

When  the  system  determines  that  the
vehicle is swaying while the vehicle sway
warning  function  is  operating,  a  buzzer
sounds  and  a  warning  message  urging
the driver to rest and the symbol shown in
the  illustration  are  simultaneously  dis-
played on the multi-information display.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

285

4-5. Using the driving support systems

4

Drivin

g

Conditions in which functions may not operate properly

In the following situations, the camera sensor may not detect white (yellow)
lines and various functions may not operate normally.

There  are  shadows  on  the  road  that  run  parallel  with,  or  cover,  the  white
(yellow) lines.

The vehicle is driven in an area without white (yellow) lines, such as in front
of a tollgate or checkpoint, or at an intersection, etc.

The  white  (yellow)  lines  are  cracked,  “Botts’  dots”,  “Raised  pavement
marker” or stones are present.

The white (yellow) lines cannot be seen or are difficult to see due to sand,
etc.

The vehicle is driven on a road surface that is wet due to rain, puddles, etc.

The  traffic lines are yellow (which may be more difficult to  recognize  than
lines that are white).

The white (yellow) lines cross over a curb, etc.

The vehicle is driven on a bright surface, such as concrete.

The vehicle is driven on a surface that is bright due to reflected light, etc.

The  vehicle  is  driven  in  an  area  where  the  brightness  changes  suddenly,
such as at the entrances and exits of tunnels, etc.

Light from the headlights of an oncoming vehicle, the sun, etc. enters the
camera.

The vehicle is driven where the road diverges, merges, etc.

The vehicle is driven on a slope.

The vehicle is driven on a road which tilts left or right, or a winding road.

The vehicle is driven on an unpaved or rough road.

The vehicle is driven around a sharp curve.

The traffic lane is excessively narrow or wide.

The  vehicle  is  extremely  tilted  due  to  carrying  heavy  luggage  or  having
improper tire pressure.

The distance to the preceding vehicle is extremely short.

The vehicle is moving up and down a large amount due to road conditions
during driving (poor roads or road seams).

The headlight lenses are dirty and emit a faint amount of light at night, or the
beam axis has deviated.

The vehicle is struck by a crosswind.

The vehicle has just changed lanes or crossed an intersection.

Snow tires, etc. are equipped.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

286

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Warning message

If the following warning message is displayed on the multi-information display
and  the  LDA  indicator  illuminates  in  amber,  follow  the  appropriate  trouble-
shooting procedure.

If a different warning message is displayed, follow the instructions displayed
on the screen.

Warning message

Details/Actions

“Lane Departure 

Alert 

Malfunction 

Contact Your Dealer”

The system may not be operating properly.

Have the vehicle inspected at your Toyota
dealer.

“Front Camera 

Unavailable Remove 

Debris On Windshield”

Dirt, rain, condensation, ice, snow, etc. are pres-
ent on the windshield in front of the camera sen-
sor.

Turn the LDA system off, remove any dirt,
rain,  condensation,  ice,  snow,  etc.  from
the  windshield,  and  then  turn  the  LDA
system back on.

“Front Camera 

Unavailable”

The operation conditions of the camera sensor
(temperature, etc.) are not met.

When  the  operation  conditions  of  the
camera  sensor  (temperature,  etc.)  are
met,  the  LDA  system  will  become  avail-
able.  Turn  the  LDA  system  off,  wait  for  a
little while, and then turn the LDA system
back on.

“Lane Departure 

Alert Unavailable”

The LDA system is temporarily canceled due to
a malfunction in a sensor other than the camera
sensor.

Turn  the  LDA  system  off  and  follow  the
appropriate  troubleshooting  procedures
for the warning message. Afterward, drive
the vehicle for a short time, and then turn
the LDA system back on.

“Lane Departure 

Alert 

Unavailable 

Below Approx 

32 MPH”

The LDA system cannot be used as the vehicle
speed  is  less  than  approximately  32  mph  (50
km/h).

Drive the vehicle at approximately 32 mph
(50 km/h) or more.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

287

4-5. Using the driving support systems

4

Drivin

g

Customization

The following settings can be changed.

For how to change settings, refer to P. 540

Function

Setting details

Lane departure alert function

Adjust alert sensitivity

Steering control function

Turn steering wheel assistance on and off

Vehicle sway warning function

Turn function on and off

Adjust alert sensitivity

-------------------------------------------------------------------------------------------------------------------------------------------------------------

288

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Dynamic radar cruise control

In vehicle-to-vehicle distance control mode, the vehicle automatically
accelerates and decelerates to match the speed changes of the pre-
ceding vehicle even if the accelerator pedal is not depressed. In con-
stant speed control mode, the vehicle runs at a fixed speed.
Use the dynamic radar cruise control on freeways and highways.

Vehicle-to-vehicle distance control mode (

P. 292)

Constant speed control mode (

P. 297)

Indicators
Set speed
Display
Vehicle-to-vehicle 

distance

switch
Cruise control switch

Summary of functions

1
2
3
4

5

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

289

4-5. Using the driving support systems

4

Drivin

g

WARNING

Before using dynamic radar cruise control

Driving safely is the sole responsibility of the driver. Do not rely solely on
the system, and drive safely by always paying careful attention to your sur-
roundings.

The dynamic radar cruise control provides driving assistance to reduce the
driver’s burden. However, there are limitations to the assistance provided.
Read the following conditions carefully. Do not overly rely on this system
and always drive carefully.
• When the sensor may not be correctly detecting the vehicle ahead: 

P. 299

• Conditions  under  which  the  vehicle-to-vehicle  distance  control  mode

may not function correctly: 

P. 301

Set the speed appropriately depending on the speed limit, traffic flow, road
conditions, weather conditions, etc. The driver is responsible for checking
the set speed.

Even when the system is functioning normally, the condition of the preced-
ing  vehicle  as  detected  by  the  system  may  differ  from  the  condition
observed  by  the  driver.  Therefore,  the  driver  must  always  remain  alert,
assess the danger of each situation and drive safely. Relying solely on this
system or assuming the system ensures safety while driving can lead to
an accident, resulting in death or serious injury.

Switch  the  dynamic  radar  cruise  control  off  using  the  “ON-OFF”  button
when not in use.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

290

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

WARNING

Cautions regarding the driving assist systems

Observe the following precautions, as there are limitations to the assistance
provided by the system.
Failure to do so may cause an accident resulting in death or serious injury.

Assisting the driver to measure following distance
The  dynamic  radar  cruise  control  is  only  intended  to  help  the  driver  in
determining the following distance between the driver’s own vehicle and a
designated vehicle traveling ahead. It is not a mechanism that allows care-
less or inattentive driving, and it is not a system that can assist the driver in
low-visibility conditions. It is still necessary for driver to pay close attention
to the vehicle’s surroundings.

Assisting the driver to judge proper following distance
The  dynamic  radar  cruise  control  determines  whether  the  following  dis-
tance between the driver’s own vehicle and a designated vehicle traveling
ahead is within a set range. It is not capable of making any other type of
judgement. Therefore,  it  is  absolutely  necessary  for  the  driver  to  remain
vigilant and to determine whether or not there is a possibility of danger in
any given situation.

Assisting the driver to operate the vehicle
The dynamic radar cruise control does not include functions which will pre-
vent or avoid collisions with vehicles ahead of your vehicle. Therefore, if
there is ever any possibility of danger, the driver must take immediate and
direct  control  of  the  vehicle  and  act  appropriately  in  order  to  ensure  the
safety of all involved.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

291

4-5. Using the driving support systems

4

Drivin

g

WARNING

Situations unsuitable for dynamic radar cruise control

Do not use dynamic radar cruise control in any of the following situations.
Doing so may result in inappropriate speed control and could cause an acci-
dent resulting in death or serious injury.

Roads where there are pedestrians, cyclists, etc.

In heavy traffic

On roads with sharp bends

On winding roads

On slippery roads, such as those covered with rain, ice or snow

On steep downhills, or where there are sudden changes between sharp up
and down gradients 
Vehicle speed may exceed the set speed when driving down a steep hill.

At entrances to freeways and highways

When weather conditions are bad enough that they may prevent the sen-
sors from detecting correctly (fog, snow, sandstorm, heavy rain, etc.)

When there is rain, snow, etc. on the front surface of the radar sensor or
camera sensor

In traffic conditions that require frequent repeated acceleration and decel-
eration

When your vehicle is towing a trailer or during emergency towing

When an approach warning buzzer is heard often

-------------------------------------------------------------------------------------------------------------------------------------------------------------

292

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

This mode employs a radar sensor to detect the presence of vehicles
up  to  approximately  328  ft.  (100  m)  ahead,  determines  the  current
vehicle-to-vehicle following distance, and operates to maintain a suit-
able following distance from the vehicle ahead.

Note that vehicle-to-vehicle distance will close in when traveling on down-
hill slopes.

Example of constant speed cruising
When there are no vehicles ahead

The vehicle travels at the speed set by the driver. The desired vehicle-to-
vehicle  distance  can  also  be  set  by  operating  the  vehicle-to-vehicle  dis-
tance switch.

Example of deceleration cruising and follow-up cruising
When  a  preceding  vehicle  driving  slower  than  the  set  speed
appears

When a vehicle is detected running ahead of you, the system automatically
decelerates  your  vehicle.  When  a  greater  reduction  in  vehicle  speed  is
necessary, the system applies the brakes (the stop lights will come on at
this time). The system will respond to changes in the speed of the vehicle
ahead in order to maintain the vehicle-to-vehicle distance set by the driver.
Approach  warning  warns  you  when  the  system  cannot  decelerate  suffi-
ciently to prevent your vehicle from closing in on the vehicle ahead.

Example of acceleration 
When  there  are  no  longer  any  preceding  vehicles  driving  slower
than the set speed

The system accelerates until the set speed is reached. The system then
returns to constant speed cruising.

Driving in vehicle-to-vehicle distance control mode

1

2

3

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

293

4-5. Using the driving support systems

4

Drivin

g

Press  the  “ON-OFF”  button  to
activate the cruise control.

Radar  cruise  control  indicator  will
come  on  and  a  message  will  be
displayed  on  the  multi-information
display.
Press  the  button  again  to  deacti-
vate the cruise control.
If  the  “ON-OFF”  button  is  pressed
and held for 1.5 seconds or more,
the  system  turns  on  in  constant
speed control mode. (

P. 297)

Accelerate  or  decelerate,  with
accelerator  pedal  operation,  to
the desired vehicle speed (at or
above  approximately  30  mph
[50  km/h])  and  push  the  lever
down to set the speed.

Cruise  control  “SET”  indicator  will
come on.
The  vehicle  speed  at  the  moment
the  lever  is  released  becomes  the
set speed.

Setting  the  vehicle  speed  (vehicle-to-vehicle  distance  control
mode)

1

2

-------------------------------------------------------------------------------------------------------------------------------------------------------------

294

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

To change the set speed, operate the lever until the desired set speed
is displayed.

Increases the speed
Decreases the speed

Fine  adjustment:  Momentarily
move  the  lever  in  the  desired
direction.
Large  adjustment:  Hold  the  lever
up or down to change the speed,
and  release  when  the  desired
speed is reached.
In the vehicle-to-vehicle distance control mode, the set speed will be
increased or decreased as follows:

U.S. mainland and Hawaii

Fine adjustment: By 1 mph (1.6 km/h)

*

1

 or 1 km/h (0.6 mph)

*

2

 each time

the lever is operated
Large adjustment: Increases or decreases in 1 mph (1.6 km/h)

*

1

 or 1 km/h

(0.6 mph)

*

2

 increments for as long as the lever is held

Canada, Samoa, Guam, Saipan and Puerto Rico

Fine adjustment: By 1 mph (1.6 km/h)

*

1

 or 1 km/h (0.6 mph)

*

2

 each time

the lever is operated
Large adjustment: Increases or decreases in 5 mph (8 km/h)

*

1

 or 5 km/h

(3.1 mph)

*

2

 increments for as long as the lever is held

In the constant speed control mode (

P. 297), the set speed will be

increased or decreased as follows:

Fine adjustment: By 1 mph (1.6 km/h)

*

1

 or 1 km/h (0.6 mph)

*

2

 each time

the lever is operated
Large  adjustment:  The  speed  will  continue  to  change  while  the  lever  is
held.

*

1

:  When the set speed is shown in “MPH”

*

2

:  When the set speed is shown in “km/h”

Adjusting the set speed

1
2

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

295

4-5. Using the driving support systems

4

Drivin

g

Pressing  the  switch  changes  the
vehicle-to-vehicle  distance  as  fol-
lows:

Long
Medium
Short

The  vehicle-to-vehicle  distance  is
set  automatically  to  long  mode
when the engine switch is turned to
the “ON” position (vehicles without
a  smart  key  system)  or  IGNITION
ON  mode  (vehicles  with  a  smart
key system).

If a vehicle is running ahead of you, the preceding vehicle mark will also be
displayed.

Select a distance from the table below. Note that the distances shown
correspond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle
distance increases/decreases in accordance with vehicle speed.

Changing the vehicle-to-vehicle distance (vehicle-to-vehicle dis-
tance control mode)

Preceding 

vehicle mark

1
2
3

Vehicle-to-vehicle distance settings (vehicle-to-vehicle distance
control mode)

Distance options

Vehicle-to-vehicle distance

Long

Approximately 160 ft. (50 m)

Medium

Approximately 130 ft. (40 m)

Short

Approximately 100 ft. (30 m)

-------------------------------------------------------------------------------------------------------------------------------------------------------------

296

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Pulling  the  lever  toward  you
cancels the speed control.

The speed control is also canceled
when 

the 

brake 

pedal 

is

depressed.

Pushing  the  lever  up  resumes
the  cruise  control  and  returns
vehicle speed to the set speed.

However,  cruise  control  does  not  resume  when  the  vehicle  speed  is
approximately 25 mph (40 km/h) or less.

When your vehicle is too close to
a  vehicle  ahead,  and  sufficient
automatic  deceleration  via  the
cruise  control  is  not  possible,  the
display  will  flash  and  the  buzzer
will  sound  to  alert  the  driver.  An
example  of  this  would  be  if
another driver cuts in front of you
while you are following a vehicle.
Depress  the  brake  pedal  to
ensure  an  appropriate  vehicle-to-
vehicle distance.

Warnings may not occur when

In the following instances, warnings may not occur even when the
vehicle-to-vehicle distance is small.

When  the  speed  of  the  preceding  vehicle  matches  or  exceeds
your vehicle speed

When  the  preceding  vehicle  is  traveling  at  an  extremely  slow
speed

Immediately after the cruise control speed was set

When depressing the accelerator pedal

Canceling and resuming the speed control

1

2

Approach warning (vehicle-to-vehicle distance control mode)

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

297

4-5. Using the driving support systems

4

Drivin

g

When constant speed control mode is selected, your vehicle will main-
tain  a  set  speed  without  controlling  the  vehicle-to-vehicle  distance.
Select this mode only when vehicle-to-vehicle distance control mode
does not function correctly due to a dirty radar sensor, etc.

With  the  cruise  control  off,
press  and  hold  the  “ON-OFF”
button for 1.5 seconds or more.

Immediately  after  the  “ON-OFF”
button is pressed, the radar cruise
control  indicator  will  come  on.
Afterwards, it switches to the cruise
control indicator.
Switching  to  constant  speed  con-
trol  mode  is  only  possible  when
operating  the  lever  with  the  cruise
control off.

Accelerate  or  decelerate,  with
accelerator  pedal  operation,  to
the desired vehicle speed (at or
above  approximately  25  mph
[40  km/h])  and  push  the  lever
down to set the speed.

Cruise  control  “SET”  indicator  will
come on.
The  vehicle  speed  at  the  moment
the  lever  is  released  becomes  the
set speed.
Adjusting the speed setting: 

P. 294

Canceling and resuming the speed setting: 

P. 296

Selecting constant speed control mode

1

2

-------------------------------------------------------------------------------------------------------------------------------------------------------------

298

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Dynamic radar cruise control can be set when

The shift lever is in D or range 4 or higher of S has been selected.

Vehicle speed is at or above approximately 30 mph (50 km/h).

Accelerating after setting the vehicle speed

The vehicle can accelerate by operating the accelerator pedal. After acceler-
ating,  the  set  speed  resumes.  However,  during  vehicle-to-vehicle  distance
control mode, the vehicle speed may decrease below the set speed in order
to maintain the distance to the preceding vehicle.

Automatic cancelation of vehicle-to-vehicle distance control mode

Vehicle-to-vehicle distance control mode is automatically canceled in the fol-
lowing situations:

Actual vehicle speed falls at or below approximately 25 mph (40 km/h).

VSC is activated.

TRAC is activated for a period of time.

When the VSC or TRAC system is turned off.

The sensor cannot detect correctly because it is covered in some way.

Pre-collision braking is activated.

If vehicle-to-vehicle distance control mode is automatically canceled for any
other reason, there may be a malfunction in the system. Contact your Toyota
dealer.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

299

4-5. Using the driving support systems

4

Drivin

g

Automatic cancelation of constant speed control mode

Constant speed control mode is automatically canceled in the following situa-
tions:

Actual vehicle speed is more than approximately 10 mph (16 km/h) below
the set vehicle speed.

Actual vehicle speed falls below approximately 25 mph (40 km/h).

VSC is activated.

TRAC is activated for a period of time.

When the VSC or TRAC system is turned off.

Pre-collision braking is activated.

If constant speed control mode is automatically canceled for any other rea-
son, there may be a malfunction in the system. Contact your Toyota dealer.

Brake system operation sound

If the brakes are applied automatically while the vehicle is in vehicle-to-vehi-
cle  distance  control  mode,  a  brake  system  operation  sound  may  be  heard.
This does not indicate a malfunction.

If “Radar Cruise Control Unavailable” is shown on the multi-information
display

The radar cruise control system cannot be used temporarily. Use the system
when it becomes available again.

Warning messages and buzzers for dynamic radar cruise control

Warning messages and buzzers are used to indicate a system malfunction or
to inform the driver of the need for caution while driving. If a warning message
is shown on the multi-information display, read the message and follow the
instructions.

When the sensor may not be correctly detecting the vehicle ahead

In  the  case  of  the  following  and  depending  on  the  conditions,  operate  the
brake  pedal  when  deceleration  of  the  system  is  insufficient  or  operate  the
accelerator pedal when acceleration is required.
As the sensor may not be able to correctly detect these types of vehicles, the
approach warning (

P. 296) may not be activated.

Vehicles that cut in suddenly

Vehicles traveling at low speeds

Vehicles that are not moving in the same lane

-------------------------------------------------------------------------------------------------------------------------------------------------------------

300

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Vehicles with small rear ends (trailers with no load on board, etc.)

Motorcycles traveling in the same lane

When  water  or  snow  thrown  up  by  the  surrounding  vehicles  hinders  the
detecting of the sensor

When  your  vehicle  is  pointing  upwards
(caused by a heavy load in the luggage
compartment, etc.)

Preceding vehicle has an extremely high
ground clearance

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

301

4-5. Using the driving support systems

4

Drivin

g

Conditions  under  which  the  vehicle-to-vehicle  distance  control  mode
may not function correctly

In the case of the following conditions, operate the brake pedal (or accelera-
tor pedal, depending on the situation) as necessary.
As the sensor may not be able to correctly detect vehicles ahead, the system
may not operate properly.

When the vehicle ahead of you decelerates suddenly

When driving on a road surrounded by a structure, such as in a tunnel or on
a bridge

While  the  vehicle  speed  is  decreasing  to  the  set  speed  after  the  vehicle
accelerates by depressing the accelerator pedal

When the road curves or when the lanes
are narrow

When  steering  wheel  operation  or  your
position in the lane is unstable

-------------------------------------------------------------------------------------------------------------------------------------------------------------

302

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

BSM (Blind Spot Monitor)

The Blind Spot Monitor is a system that has 2 functions:

The BSM (Blind Spot Monitor) function 
Assists the driver in making the decision when changing lanes

The RCTA (Rear Cross Traffic Alert) function 
Assists the driver when backing up

These functions use same sensors.

Multi-information display

Turning the BSM function/RCTA function on/off. (

P. 303)

Outside rear view mirror indicators

BSM function:
When a vehicle is detected in a blind spot of the outside rear view mirrors
or approaching rapidly from behind into a blind spot, the outside rear view
mirror indicator on the detected side will illuminate. If the turn signal lever
is operated toward the detected side, the outside rear view mirror indicator
flashes.
RCTA function:
When  a  vehicle  approaching  from  the  right  or  left  rear  of  the  vehicle  is
detected, the outside rear view mirror indicators flash.

: If equipped

Summary of the Blind Spot Monitor

1

2

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

303

4-5. Using the driving support systems

4

Drivin

g

“BSM” indicator/“RCTA” indicator

When  the  BSM  function/RCTA  function  is  turned  on,  the  indicator  illumi-
nates.

RCTA buzzer (RCTA function only)

When  a  vehicle  approaching  from  the  right  or  left  rear  of  the  vehicle  is
detected, a buzzer sounds from behind the rear seat.

Press 

 or 

 of the meter control switches, select 

.

Press 

  or 

  of  the  meter  control  switches,  select  “BSM”  or

“RCTA”.

Press 

 of the meter control switch.

Each time 

 is pressed, the function changes on/off.

The outside rear view mirror indicators visibility

When under strong sunlight, the outside rear view mirror indicator may be dif-
ficult to see.

RCTA buzzer hearing

RCTA function may be difficult to hear over loud noises such as high audio
volume.

When “Blind Spot Monitor Unavailable” is shown on the multi-informa-
tion display

Water, snow, mud, etc., may be built up in the vicinity of the sensor area of
bumper. (

P. 305) Removing the water, snow, mud, etc., from the vicinity of

the sensor area bumper should return it to normal.
Also,  the  sensor  may  not  function  normally  when  used  in  extremely  hot  or
cold weather.

Turning the BSM function/RCTA function on/off

3

4

1

2

3

-------------------------------------------------------------------------------------------------------------------------------------------------------------

304

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Certification for the Blind Spot Monitor system

For vehicles sold in the U.S.A.

For vehicles sold in Canada

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

305

4-5. Using the driving support systems

4

Drivin

g

WARNING

Handling the radar sensor

One Blind Spot Monitor sensor is installed inside the left and right side of
the vehicle rear bumper respectively. Observe the following to ensure the
Blind Spot Monitor can function correctly.

Do not subject the sensor or surrounding area on the bumper to a strong
impact. If the sensor moves even slightly off position, the system may mal-
function and vehicles that enter the detection area may not be detected. If
the sensor or surrounding area is subject to a strong impact, always have
the area inspected by your Toyota dealer.

Do not disassemble the sensor.

Do not attach accessories or stickers to the sensor or surrounding area on
the bumper.

Do not modify the sensor or surrounding area on the bumper.

Do not paint the rear bumper any color other than an official Toyota color.

Keep the sensor and its surrounding area
on the bumper clean at all times.
If a sensor or its surrounding area on the
rear bumper is dirty or covered with snow,
the  Blind  Spot  Monitor  may  not  operate
and a warning message (

P. 303) will be

displayed.  In  this  situation,  clear  off  the
dirt or snow and drive the vehicle with the
operation conditions of the BSM function
(

P.  307)  satisfied  for  approximately  10

minutes. If the warning message does not
disappear, have the vehicle inspected by
your Toyota dealer.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

306

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

The BSM function uses radar sensors to detect vehicles that are trav-
eling in an adjacent lane in the area that is not reflected in the outside
rear view mirror (the blind spot), and advises the driver of the vehicles
existence via the outside rear view mirror indicator.

The areas that vehicles can be detected in are outlined below.
The  range  of  the  detection  area
extends to:

Approximately  11.5  ft.  (3.5  m)
from the side of the vehicle

The  first  1.6  ft.  (0.5  m)  from  the
side  of  the  vehicle  is  not  in  the
detection area

Approximately 9.8 ft. (3 m) from
the rear bumper
Approximately 3.3 ft. (1 m) for-
ward of the rear bumper

The BSM function

The BSM function detection areas

1

2

3

WARNING

Cautions regarding the use of the system

The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
The BSM function is a supplementary function which alerts the driver that a
vehicle is present in the blind spot. Do not overly rely on the BSM function.
The function cannot judge if it is safe to change lanes, therefore over reli-
ance could cause an accident resulting in death or serious injury. 
According  to  conditions,  the  system  may  not  function  correctly. Therefore
the driver’s own visual confirmation of safety is necessary.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

307

4-5. Using the driving support systems

4

Drivin

g

The BSM function is operational when

The BSM function is turned on

Vehicle speed is greater than approximately 10 mph (16 km/h).

The BSM function will detect a vehicle when

A vehicle in an adjacent lane overtakes your vehicle.

Another vehicle enters the detection area when it changes lanes.

You overtake a vehicle in adjacent lane slowly

Conditions under which the BSM function will not detect a vehicle

The  BSM  function  is  not  designed  to  detect  the  following  types  of  vehicles
and/or objects:

Small motorcycles, bicycles, pedestrians etc.

*

Vehicles traveling in the opposite direction

Guardrails, walls, signs, parked vehicles and similar stationary objects

*

Following vehicles that are in the same lane

*

Vehicles driving 2 lanes across from your vehicle

*

Vehicles which are being overtaken rapidly by your vehicle

*

: Depending on conditions, detection of a vehicle and/or object may occur.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

308

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Conditions under which the BSM function may not function correctly

The BSM function may not detect vehicles correctly in the following condi-
tions:
• When the sensor is misaligned due to a strong impact to the sensor or its

surrounding area

• When mud, snow, ice, a sticker, etc. is covering the sensor or surround-

ing area on the rear bumper

• When driving on a road surface that is wet with standing water during bad

weather, such as heavy rain, snow, or fog

• When  multiple  vehicles  approach  with  only  a  small  gap  between  each

vehicle

• When there is a significant difference in speed between your vehicle and

the vehicle that enters the detection area

• When a vehicle is in the detection area from a stop and remains in the

detection area as your vehicle accelerates

• When towing a trailer
• When the vehicle that enters the detection area is traveling at about the

same speed as your vehicle

• When driving up or down consecutive steep inclines, such as hills, a dip

in the road etc.

• When driving on roads with sharp bends, consecutive curves, or uneven

surfaces

• When vehicle lanes are wide, and the vehicle in the next lane is too far

away from your vehicle

• When there is a significant difference in height between your vehicle and

the vehicle that enters the detection area

• Directly after the BSM function is turned on
• When items such as a bicycle carrier are installed on the rear of the vehi-

cle

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

309

4-5. Using the driving support systems

4

Drivin

g

Instances  of  the  BSM  function  unnecessarily  detecting  a  vehicle  and/or
object may increase under the following conditions:
• When there is only a short distance between your vehicle and a guardrail,

wall etc.

• When there is only a short distance between your vehicle and a following

vehicle

• When driving up and down consecutive steep inclines, such as hills, dips

in the road, etc.

• When driving on roads with sharp bends, consecutive curves, or uneven

surfaces

• When vehicle lanes are narrow and a vehicle driving 2 lanes across from

your vehicle enters the detection area

• When items such as a bicycle carrier are installed on the rear of the vehi-

cle

• When the sensor is misaligned due to a strong impact to the sensor or its

surrounding area

The  RCTA  functions  when  your  vehicle  is  in  reverse.  It  can  detect
other vehicles approaching from the right or left rear of the vehicle. It
uses radar sensors to alert the driver of the other vehicle’s existence
through flashing the outside rear view mirror indicators and sounding
a buzzer.

The RCTA function

Approaching vehicles

Detection areas

1

2

-------------------------------------------------------------------------------------------------------------------------------------------------------------

310

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

The areas that vehicles can be detected in are outlined below.

To give the driver a more consistent time to react, the buzzer can alert
for faster vehicles from farther away.
Example:

WARNING

Cautions regarding the use of the system

The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
The  RCTA  function  is  only  an  assist  and  is  not  a  replacement  for  careful
driving.  Driver  must  be  careful  when  backing  up,  even  when  using  RCTA
function. The driver’s own visual confirmation of behind you and your vehi-
cle is necessary and be sure there are no pedestrians, other vehicles etc.
before backing up. Failure to do so could cause death or serious injury. 
According  to  conditions,  the  system  may  not  function  correctly. Therefore
the driver’s own visual confirmation of safety is necessary.

The RCTA function detection areas

Approaching vehicle

Speed

Approximate 
alert distance

Fast

18 mph (28 km/h)

65 ft. (20 m)

Slow

5 mph (8 km/h)

18 ft (5.5 m)

1

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

311

4-5. Using the driving support systems

4

Drivin

g

The RCTA function is operational when

The RCTA function is turned on.

The shift lever is in R.

Vehicle speed is less than approximately 5 mph (8 km/h).

Approaching vehicle speed is between approximately 5 mph (8 km/h) and
18 mph (28 km/h).

Conditions under which the RCTA function will not detect a vehicle

The RCTA function is not designed to detect the following types of vehicles
and/or objects.

Vehicles approaching from directly behind

Vehicles backing up in the parking space next to your vehicle

Guardrails, walls, signs, parked vehicles and similar stationary objects

*

Small motorcycles, bicycles, pedestrians etc.

*

Vehicles moving away from your vehicle

Vehicles approaching from the parking spaces next to your vehicle

*

Vehicles which suddenly accelerate or decelerate near your vehicle

*

: Depending on conditions, detection of a vehicle and/or object may occur.

Vehicles that the sensors cannot detect
due to obstructions

-------------------------------------------------------------------------------------------------------------------------------------------------------------

312

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Conditions under which the RCTA function may not function correctly

The RCTA function may not detect vehicles correctly in the following condi-
tions:
• When the sensor is misaligned due to a strong impact to the sensor or its

surrounding area

• When mud, snow, ice, a sticker, etc. is covering the sensor or surround-

ing area on the rear bumper

• When driving on a road surface that is wet with standing water during bad

weather, such as heavy rain, snow, or fog

• When multiple vehicles are approaching with only a small gap between

each vehicle

• When a vehicle is approaching at high speed

• When parking on a steep incline, such as hills, a dip in the road etc.
• Directly after the RCTA function is turned on
• Immediately after the engine is started with the RCTA function on
• When towing a trailer

• When  backing  up  on  a  slope  with  a

sharp change in grade

• When backing out of a shallow angle

parking spot

• When  a  vehicle  turns  into  the  detec-

tion area

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

313

4-5. Using the driving support systems

4

Drivin

g

Instances  of  the  RCTA  function  unnecessarily  detecting  a  vehicle  and/or
object may increase in the following situations:
• When a vehicle passes by the side of your vehicle

When “Rear Cross Traffic Alert Unavailable” is shown on the multi-infor-
mation display

Water, snow, mud, etc., may be built up in the vicinity of the sensor area of
bumper. (

P. 305) Removing the water, snow, mud, etc., from the vicinity of

the sensor area bumper should return it to normal.
Also,  the  sensor  may  not  function  normally  when  used  in  extremely  hot  or
cold weather.

Setting up BSM function/RCTA function

You  can  change  the  BSM  function/RCTA  function  settings.  (Customizable
features: 

P. 540)

• Vehicles  that  the  sensors  cannot

detect due to obstructions

• When  the  parking  space  faces  a

street  and  vehicles  are  being  driven
on the street

• When a vehicle passes by the side of

your vehicle

• When  the  distance  between  your

vehicle and  metal  objects, such as a
guardrail,  wall,  sign,  or  parked  vehi-
cle,  which  may  reflect  electrical
waves toward the rear of the vehicle,
is short

-------------------------------------------------------------------------------------------------------------------------------------------------------------

314

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Intuitive parking assist

Front corner sensors 
(if equipped)
Rear corner sensors
Rear center sensors

Turns  the  intuitive  parking  assist
on/off

When on, the indicator light comes
on and the buzzer sounds to inform
the driver that the system is opera-
tional.

: If equipped

The distance from your vehicle to nearby obstacles when paral-
lel  parking  or  maneuvering  into  a  garage  is  measured  by  the
sensors  and  communicated  via  the  multi-information  display,
the audio/visual system screen and a buzzer. Always check the
surrounding area when using this system.

Types of sensors

1

2
3

Intuitive parking assist switch

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

315

4-5. Using the driving support systems

4

Drivin

g

When  the  sensors  detect  an  obstacle,  the  following  displays  inform
the driver of the position and distance to the obstacle.

Multi-information display

Front  corner  sensor  opera-
tion
Rear corner sensor operation
Rear center sensor operation
Select  to  mute  the  buzzer
sounds.

Audio/visual system screen

Insert display

When the rear view monitor sys-
tem is displayed.
A  simplified  image  is  displayed
on the right upper corner of the
audio/visual 

system 

screen

when an obstacle is detected.

Display

1

2
3
4

-------------------------------------------------------------------------------------------------------------------------------------------------------------

316

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Muting the buzzer sound

To mute the buzzer sound
The buzzer can be temporarily muted by pressing 

 of the meter control

switches while an obstacle detection display is shown on the multi-informa-
tion display.

To cancel the mute
Mute will be automatically canceled in the following situations.
• When the shift position is changed
• When the vehicle speed has reached or exceeded approximately 6 mph

(10 km/h) with the shift lever in D

• When the intuitive parking assist is turned off once and turned on again
• Vehicles without a smart key system: When the engine switch is turned

off once and turned to “ON” position again
Vehicles with a smart key system: When the engine switch is turned off
once and turned to IGNITION ON mode again

• When a sensor is malfunctioning

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

317

4-5. Using the driving support systems

4

Drivin

g

Distance display

Sensors that detect an obstacle will illuminate continuously or blink.

Sensor detection display, obstacle distance

Multi-

informa-

tion 

display

Insert display

Approximate distance to obstacle

Toyota 

parking 

assist 

monitor

Pan-

oramic 

view 

monitor

Front and rear 

corner sensors

Rear center 

sensors

(continu-

ous)

(blinking 

slowly)

(blinking 

slowly)

5.9 ft. (180 cm)
to 
2.8 ft. (85 cm)

(continu-

ous)

(blinking) (blinking)

2.0  ft.  (60  cm)
to 
1.2 ft. (37.5 cm)

2.8  ft.  (85  cm)
to 
1.5 ft. (45 cm)

(continu-

ous)

(blinking 

rapidly)

(blinking 

rapidly)

1.2 ft. (37.5 cm)
to 
0.8 ft. (25 cm)

1.5  ft.  (45  cm)
to 
1.1 ft. (35 cm)

(blinking) (continu-

ous)

(continu-

ous)

Less than 
0.8 ft. (25 cm)

Less than 
1.1 ft. (35 cm)

Far

Near

-------------------------------------------------------------------------------------------------------------------------------------------------------------

318

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Buzzer operation and distance to an obstacle

A buzzer sounds when the sensors are operating.

The buzzer sounds faster as the vehicle approaches an obstacle. 
When  the  vehicle  comes  within  the  following  distance  of  the
obstacle, the buzzer sounds continuously.

• Front and rear corner sensors: Approximately 0.8 ft. (25 cm)
• Rear center sensors: Approximately 1.1 ft. (35 cm)

When  2  or  more  obstacles  are  detected  simultaneously,  the
buzzer system responds to the nearest obstacle. If one or both
come  within  the  above  distances,  the  beep  will  repeat  a  long
tone, followed by fast beeps.

Approximately 2.0 ft. (60 cm)
Approximately 2.0 ft. (60 cm)
Approximately 5.9 ft. (180 cm)

The  diagram  shows  the  detection
range of the sensors. Note that the
sensors  cannot  detect  obstacles
that  are  extremely  close  to  the
vehicle.
The  range  of  the  sensors  may
change depending on the shape of
the object etc.

*

: if equipped

Detection range of the sensors

*

1
2
3

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

319

4-5. Using the driving support systems

4

Drivin

g

The intuitive parking assist can be operated when

The engine switch is in the “ON” position (vehicles without a smart key sys-
tem) or IGNITION ON mode (vehicles with a smart key system).

Front corner sensors:
• The shift lever is not in P.
• The vehicle speed is approximately 6 mph (10 km/h) or less.

Rear corner and rear center sensors:
The shift lever is in R.

Intuitive parking assist display

When  an  obstacle  is  detected  while  the  rear  view  monitor  system  or  pan-
oramic view monitor (if equipped) is in use, the warning indicator will appear
in the upper part of the screen even if the display setting has been set to off.

Sensor detection information

The sensor’s detection areas are limited to the areas around the vehicle’s
bumper.

Depending on the shape of the obstacle and other factors, the detection dis-
tance may shorten, or detection may be impossible.

Obstacles may not be detected if they are too close to the sensor.

There will be a short delay between obstacle detection and display. Even at
slow speeds, there is a possibility that the obstacle will come within the sen-
sor’s detection.

Thin  posts  or  objects  lower  than  the  sensor  may  not  be  detected  when
approached, even if they have been detected once.

It might be difficult to hear beeps due to the volume of audio/visual system
or air flow noise of the air conditioning system. 

Certification (Canada only)

This ISM device complies with Canadian ICES-001.
Cet appareil ISM est conforme a la norme NMB-001 du Canada.

WARNING

When using the Intuitive parking assist-sensor

Observe the following precautions. 
Failure to do so may result in the vehicle being unable to be driven safely
and possibly cause an accident.

Do not use the sensor at speeds in excess of 6 mph (10 km/h).

The sensors’ detection areas and reaction times are limited. When moving
forward or reversing, check the areas surrounding the vehicle (especially
the  sides  of  the  vehicle)  for  safety,  and  drive  slowly,  using  the  brake  to
control the vehicle’s speed.

Do not install accessories within the sensors’ detection areas.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

320

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

WARNING

Sensors

Certain vehicle conditions and the surrounding environment may affect the
ability of a sensor to correctly detect an obstacle. Particular instances where
this may occur are listed below.

There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve
this problem.)

The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen may show an
abnormal display, or obstacles may not be detected.

The sensor is covered in any way.

The vehicle is leaning considerably to one side.

On an extremely bumpy road, on an incline, on gravel, or on grass.

The  vicinity  of  the  vehicle  is  noisy  due  to  vehicle  horns,  motorcycle
engines, air brakes of large vehicles, or other loud noises producing ultra-
sonic waves.

There is another vehicle equipped with parking assist sensors in the vicin-
ity.

The sensor is coated with a sheet of spray or heavy rain.

The sensor is drenched with water on a flooded road.

The vehicle is equipped with a fender pole or wireless antenna.

Towing eyelets are installed.

The bumper or sensor receives a strong impact.

The vehicle is approaching a tall or curved curb.

The detection range is reduced due to an object such as a sign.

In harsh sunlight or intense cold weather.

The area directly under the bumpers is not detected.

If obstacles draw too close to the sensor.

A non-genuine Toyota suspension (lowered suspension, etc.) is installed.

A backlit license plate is installed.

In addition to the examples above, there are instances in which, because of
their shape, signs and other objects may be judged by a sensor to be closer
than they are.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

321

4-5. Using the driving support systems

4

Drivin

g

WARNING

Obstacles which may not be properly detected

The shape of the obstacle may prevent a sensor from detecting it. Pay par-
ticular attention to the following obstacles:

Wires, fences, ropes, etc.

Cotton, snow and other materials that absorb sound waves

Sharply-angled objects

Low obstacles

Tall obstacles with upper sections projecting outwards in the direction of
your vehicle

People may not be detected if they are wearing certain types of clothing.

Moving objects such as people or animals

NOTICE

When using intuitive parking assist

In the following situations, the system may not function correctly due to a
sensor malfunction, etc. Have the vehicle checked by your Toyota dealer.

The intuitive parking assist operation display flashes, and a buzzer sounds
when no obstacles are detected.

If  the  area  around  a  sensor  collides  with  something,  or  is  subjected  to
strong impact.

If the bumper collides with something.

If the display shows continuously without beeping, except when the buzzer
volume is muted.

If a display error occurs, first check the sensor. 
If the error occurs even if there is no ice, snow or mud on the sensor, it is
likely that the sensor is malfunctioning.

Notes when washing the vehicle

Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor malfunctioning.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

322

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Driving assist systems

ABS (Anti-lock Brake System)

Helps to prevent wheel lock when the brakes are applied suddenly,
or if the brakes are applied while driving on a slippery road surface

Brake assist

Generates an increased level of braking force after the brake pedal
is depressed when the system detects a panic stop situation

VSC (Vehicle Stability Control)

Helps  the  driver  to  control  skidding  when  swerving  suddenly  or
turning on slippery road surfaces

TRAC (Traction Control)

Helps  to  maintain  drive  power  and  prevent  the  drive  wheels  from
spinning when starting the vehicle or accelerating on slippery roads

Hill-start assist control

Helps to reduce the backward movement of the vehicle when start-
ing on an uphill

EPS (Electric Power Steering)

Employs an electric motor to reduce the amount of effort needed to
turn the steering wheel

Active Torque Control 4WD (AWD models only)

Automatically  switches  from  front-wheel  drive  to AWD  (All-Wheel
Drive)  according  to  driving  conditions,  helping  to  ensure  reliable
handling and stability. Examples of conditions where the system will
switch  to  AWD  are  when  cornering,  going  uphill,  starting  off  or
accelerating, and when the road surface is slippery due to snow or
rain etc.

To keep driving safety and performance, the following systems
operate automatically in response to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heavily when operating the vehi-
cle.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

323

4-5. Using the driving support systems

4

Drivin

g

The  slip  indicator  light  will  flash
while the TRAC/VSC systems are
operating.

If the vehicle gets stuck in mud, dirt or snow, the TRAC system may

reduce power from the engine to the wheels. Pressing 

 to turn the

system off may make it easier for you to rock the vehicle in order to
free it.

Turning off the TRAC system only

When the TRAC/VSC systems are operating

Disabling the TRAC system

To  turn  the  TRAC  system  off,  quickly

press and release 

.

The  “Traction  Control  OFF”  will  be
shown on the multi-information display.

Press 

  again  to  turn  the  system

back on.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

324

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

Turning off both TRAC and VSC systems

To turn the TRAC and VSC systems off, press and hold 

 for more than 3

seconds while the vehicle is stopped.
The VSC OFF indicator light will come on and the “Traction Control Turned
Off” will be shown on the multi-information display.

*

Press 

 again to turn the systems back on.

*

:  Pre-collision brake assist and pre-collision braking will also be disabled. 

The PCS warning light will come on and the message will be shown on the
multi-information display. (

P. 472)

When the message is displayed on the multi-information display show-

ing that TRAC has been disabled even if 

 has not been pressed

TRAC is temporary deactivated. If the information continues to show, contact
your Toyota dealer.

Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC and
hill-start assist control systems

A sound may be heard from the engine compartment when the brake pedal
is depressed repeatedly, when the engine is started or just after the vehicle
begins  to  move.  This  sound  does  not  indicate  that  a  malfunction  has
occurred in any of these systems.

Any  of  the  following  conditions  may  occur  when  the  above  systems  are
operating. 
None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard also after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.

EPS operation sound

When the steering wheel is operated, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.

Automatic reactivation of TRAC and VSC systems

After turning the TRAC and VSC systems off, the systems will be automati-
cally re-enabled in the following situations:

When the engine switch is turned to the “LOCK” position (vehicles without a
smart key system) or off (vehicles with a smart key system)

If only the TRAC system is turned off, the TRAC will turn on when vehicle
speed increases 
If both the TRAC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

325

4-5. Using the driving support systems

4

Drivin

g

Reduced effectiveness of the EPS system

The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result. Should this occur, refrain
from excessive steering input or stop the vehicle and turn the engine off. The
EPS system should return to normal within 10 minutes.

Operating conditions of hill-start assist control

When  the  following  four  conditions  are  met,  the  hill-start  assist  control  will
operate:

The shift lever is in a position other than P or N (when starting off forward/
backward on an upward incline)

The vehicle is stopped

The accelerator pedal is not depressed

The parking brake is not engaged

Automatic system cancelation of hill-start assist control

The hill-start assist control will turn off in any of the following situations:

The shift lever is shifted to P or N

The accelerator pedal is depressed

The parking brake is engaged

No more than 2 seconds have elapsed after the brake pedal is released

WARNING

The ABS does not operate effectively when

The  limits  of  tire  gripping  performance  have  been  exceeded  (such  as
excessively worn tires on a snow covered road).

The vehicle hydroplanes while driving at high speed on wet or slick roads.

Stopping distance when the ABS is operating may exceed that of nor-
mal conditions

The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, especially in the
following situations:

When driving on dirt, gravel or snow-covered roads

When driving with tire chains

When driving over bumps in the road

When driving over roads with potholes or uneven surfaces

-------------------------------------------------------------------------------------------------------------------------------------------------------------

326

SIENNA_OM_OM08035U_(U)

4-5. Using the driving support systems

WARNING

TRAC/VSC may not operate effectively when

Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC/VSC system is operating. Drive the
vehicle carefully in conditions where stability and power may be lost.

Hill-start assist control does not operate effectively when

Do not overly rely on hill-start assist control. Hill-start assist control may
not operate effectively on steep inclines and roads covered with ice.

Unlike the parking brake, hill-start assist control is not intended to hold the
vehicle  stationary for an  extended  period  of time. Do not attempt to  use
hill-start assist control to hold the vehicle on an incline, as doing so may
lead to an accident.

When the VSC is activated

The slip indicator light flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator light flashes.

When the TRAC/VSC systems are turned off

Be  especially  careful  and  drive  at  a  speed  appropriate  to  the  road  condi-
tions. As these are the systems to help ensure vehicle stability and driving
force, do not turn the TRAC/VSC systems off unless necessary.

Replacing tires

Make  sure  that  all  tires  are  of  the  specified  size,  brand,  tread  pattern

and total load capacity. In addition, make sure that the tires are inflated

to the recommended tire inflation pressure level.
The ABS, TRAC and VSC systems will not function correctly if different

tires are installed on the vehicle.
Contact your Toyota dealer for further information when replacing tires

or wheels.

Handling of tires and the suspension

Using  tires  with  any  kind  of  problem  or  modifying  the  suspension  will

affect the driving assist systems, and may cause a system to malfunc-

tion.

Active Torque Control 4WD system (AWD models only)

The AWD system of this vehicle is intended to ensure driving stability on
normal roads. It is not designed for use in demanding situations such as
rally driving.

Take care when driving on slippery road surfaces.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

327

SIENNA_OM_OM08035U_(U)

4-6. Driving tips

4

Drivin

g

Winter driving tips

Use  fluids  that  are  appropriate  to  the  prevailing  outside  tempera-
tures.

• Engine oil
• Engine coolant
• Washer fluid

Have a service technician inspect the condition of the battery.

Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the front tires.

Ensure that all tires are the same size and brand, and that chains match
the size of the tires.

Perform the following according to the driving conditions:

Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent it from freezing.

To  ensure  proper  operation  of  the  climate  control  system  fan,
remove  any  snow  that  has  accumulated  on  the  air  inlet  vents  in
front of the windshield.

Check for and remove any excess ice or snow that may have accu-
mulated  on  the  exterior  lights,  vehicle’s  roof,  chassis,  around  the
tires or on the brakes.

Remove  any  snow  or  mud  from  the  bottom  of  your  shoes  before
getting in the vehicle.

Carry  out  the  necessary  preparations  and  inspections  before
driving the vehicle in winter. Always drive the vehicle in a man-
ner appropriate to the prevailing weather conditions.

Preparation for winter

Before driving the vehicle

-------------------------------------------------------------------------------------------------------------------------------------------------------------

328

SIENNA_OM_OM08035U_(U)

4-6. Driving tips

Accelerate the vehicle slowly, keep a safe distance between you and
the vehicle ahead, and drive at a reduced speed suitable to road con-
ditions.

Park the vehicle and move the shift lever to P without setting  the
parking brake. The parking brake may freeze up, preventing it from
being released. If the vehicle is parked without setting the parking
brake, make sure block the wheels.
Failure to do so may be dangerous because it may cause the vehi-
cle to move unexpectedly, possibly leading to an accident.

If  the  vehicle  is  parked  without  setting  the  parking  brake,  confirm
that the shift lever cannot be moved out of P

*

.

*

: The shift lever will be locked if it is attempted to be shifted from P to any

other position without depressing the brake pedal. If the shift lever can be
shifted from P, there may be a problem with the shift lock system. Have the
vehicle inspected by your Toyota dealer immediately.

Use the tire chains of correct size and type.

Use  SAE  Class  “S”  type  radial  tire  chains,  with  the  exception  of  radial
cable chains or V-bar type chains.

Regulations regarding the use of tire chains vary depending on loca-
tion and type of road. Always check local regulations before installing
chains.

Tire chain installation

Observe the following precautions when installing and removing chains.

Install and remove tire chains in a safe location.

Install tire chains on the front tires only. Do not install tire chains on the rear
tires.

Install tire chains on front tires as tightly as possible. Retighten chains after
driving 1/4 - 1/2 mile (0.5 - 1.0 km).

Install tire chains following the instructions provided with the tire chains.

When driving the vehicle

When parking the vehicle

Selecting tire chains

Regulations on the use of tire chains

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

329

4-6. Driving tips

4

Drivin

g

WARNING

Driving with snow tires

Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in a loss of vehicle control and cause death or
serious injury.

Use tires of the specified size.

Maintain the recommended level of air pressure.

Do  not  drive  in  excess  of  75  mph  (120  km/h),  regardless  of  the  type  of
snow tires being used.

Use snow tires on all, not just some wheels.

Driving with tire chains

Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in the vehicle being unable to be driven safely,
and may cause death or serious injury.

Do not drive in excess of the speed limit specified for the tire chains being
used or 30 mph (50 km/h), whichever is lower.

Avoid driving on bumpy road surfaces or over potholes.

Avoid  sudden  acceleration,  abrupt  steering,  sudden  braking  and  shifting
operations that cause sudden engine braking.

Slow down sufficiently before entering a curve to ensure that vehicle con-
trol is maintained.

NOTICE

Repairing or replacing snow tires

Request repairs or replacement of snow tires from Toyota dealers or legiti-
mate tire retailers.
This is because the removal and attachment of snow tires affects the opera-
tion of the tire pressure warning valves and transmitters.

Fitting tire chains

The tire pressure warning valves and transmitters may not function correctly
when tire chains are fitted.

-------------------------------------------------------------------------------------------------------------------------------------------------------------

330

SIENNA_OM_OM08035U_(U)

4-6. Driving tips

-------------------------------------------------------------------------------------------------------------------------------------------------------------

331

SIENNA_OM_OM08035U_(U)

5

Interior features

5-1. Using the air conditioning 

system and defogger

Front automatic air 

conditioning system ........ 332

Rear automatic air 

conditioning system ........ 341

Heated steering 

wheel/seat heaters.......... 344
• Heated steering 

wheel ............................ 345

• Seat heaters ................. 346

5-2. Using the interior lights

Interior lights list ................ 347

• Personal/interior light 

main switch ................... 348

• Personal/interior 

lights ............................. 348

• Rear ceiling lights ......... 349

5-3. Using the storage features

List of storage features ..... 350

• Glove boxes.................. 351
• Console box.................. 352
• Cup holders .................. 354
• Bottle holders................ 356
• Door pockets................. 357
• Auxiliary boxes.............. 358

Luggage compartment 

features........................... 361

5-4. Using the other interior 

features

Other interior features ....... 363

• Sun visors ..................... 363
• Vanity mirrors................ 363
• Conversation mirror ...... 364
• Power outlets ................ 365
• USB charging ports....... 368
• Armrests ....................... 370
• Assist grips ................... 371
• Rear side sunshades .... 372
• Grocery bag hooks ....... 373

Garage door opener.......... 374
Compass........................... 381
Safety Connect ................. 385

-------------------------------------------------------------------------------------------------------------------------------------------------------------

332

SIENNA_OM_OM08035U_(U)

5-1. Using the air conditioning system and defogger

Front automatic air conditioning system

Adjusting the temperature setting

Turn  the  “TEMP”  dial  clockwise  to  increase  the  temperature  and
counterclockwise to decrease the temperature.
If 

 is not pressed, the system will blow ambient temperature

air or heated air.

Air outlets and fan speed are automatically adjusted according
to the temperature setting.

Air conditioning controls

-------------------------------------------------------------------------------------------------------------------------------------------------------------

SIENNA_OM_OM08035U_(U)

333

5-1. Using the air conditioning system and defogger

5

In

te

rior 

fe

at

ures

The “SYNC” button

The  air  conditioning  system  switches  between  individual  (indica-
tor(s) off) and simultaneous (indicators on) modes.
When the air conditioning system is in simultaneous mode, the pas-
senger  and/or  rear  side  temperature  will  be  synchronized  with
driver side’s.

The air conditioning system switches simultaneous

Press the “SYNC” button. (indicators on)

Driver side indicator
Passenger side indicator

When  the  indicator  is  on,  the
passenger side temperature will
be  synchronized  with  driver
side. 

Rear side indicator

When  the  indicator  is  on

*

,  the

rear  side  temperature  will  be
synchronized with driver side.

*

: When the rear air conditioning system is on. (

P. 335)

The air conditioning system switches individual

The  temperature  for  the  driver,  passenger  and/or  rear  seats  side
can be adjusted separately. 
When all indicators on the “SYNC” button are on:

• Press the “SYNC” button. (All indicators will turn off.) 
• The “PASS TEMP” dial is turned. (The passenger side indicator

will turn off.)

• The  “REAR  TEMP”  dial  is  turned.  (The  rear  side  indicator  will

turn off.)

When two indicators on the “SYNC” button are on:

• Press the “SYNC” button a second time. (All indicators will turn

off.)

If  both  the  temperature  of  the  passenger  and  rear  seats  side  are
changed, all indicators on the button will be off.

1
2

3

-------------------------------------------------------------------------------------------------------------------------------------------------------------

 

 

 

 

 

 

 

Content      ..     3      4      5      6     ..