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Toyota C-HR (2023 year). Manual in english - page 20

397

4-5. Using the driving support systems

riv

●

Lane centering function
This function operates when all of the following conditions are met.
• LTA is turned on.

• Setting for “Lane Centering” in

of the multi-information display is set

to “ON”. (



P. 786)

• This function recognizes white (yellow) lane lines or the position of a pre-

ceding vehicle (except when the preceding vehicle is small, such as a
motorcycle).

• The dynamic radar cruise control with full-speed range is operating in

vehicle-to-vehicle distance control mode.

• Width of traffic lane is approximately 3 to 4 m (10 to 13 ft.).
• Turn signal lever is not operated.
• Vehicle is not being driven around a sharp curve.
• No system malfunctions are detected. (



P. 399)

• Vehicle does not accelerate or decelerate by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for

changing lanes.

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



P. 398)

• The vehicle is being driven in the center of a lane.
• Steering assist function is not operating.

■

Temporary cancelation of functions

●

When operation conditions are no longer met, a function may be temporarily
canceled. However, when the operation conditions are met again, operation
of the function is automatically restored. (



P. 396)

●

If the operation conditions (



P. 397) are no longer met while the lane cen-

tering function is operating, the buzzer may sound to indicate that the func-
tion has been temporarily canceled.

■

Steering assist function/lane centering 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.

●

The steering control of the function is overridden by the driver’s steering
wheel operation.

●

Do not attempt to test the operation of the steering assist function.

398

4-5. Using the driving support systems

■

Lane departure alert function

●

The warning buzzer may be difficult to hear due to external noise, audio
playback, etc.

●

If the edge of the course* is not clear or straight, the lane departure alert
function may not operate.

●

Vehicle with BSM: It may not be possible for the system to determine if there
is a danger of a collision with a vehicle in an adjacent lane.

●

Do not attempt to test the operation of the lane departure alert function.

: Boundary between asphalt and the side of the road, such as grass, soil, or

a curb

■

Hands off steering wheel warning

●

When  the  system  determines  that  the  driver  is  driving  without  holding  the
steering wheel while the system is operating
If  the  driver  continues  to  keep  their  hands  off  of  the  steering  wheel,  the
buzzer  sounds,  the  driver  is  warned  and  the  function  is  temporarily  can-
celed. This warning also operates in the same way when the driver continu-
ously operates the steering wheel only a small amount.

●

When the system determines that the vehicle may deviate from the lane
while driving around a curve while the lane centering function is operating.
Depending on the vehicle condition and road conditions, the warning may
not operate. Also, if the system determines that the vehicle is driving
around a curve, warnings will occur earlier than during straight-lane driving.

●

When  the  system  determines  that  the  driver  is  driving  without  holding  the
steering wheel while the steering wheel assist of the steering assist function
is operating.
If the driver continues to keep their hands off of the steering wheel and the
steering  wheel  assist  is  operating,  the  buzzer  sounds  and  the  driver  is
warned.  Each  time  the  buzzer  sounds,  the  continuing  time  of  the  buzzer
becomes longer.

In the following situations, a warning mes-
sage urging the driver to hold the steering
wheel and the symbol shown in the illus-
tration are displayed on the multi-informa-
tion  display  to  warn  the  driver.  The
warning  stops  when  the  system  deter-
mines  that  the  driver  holds  the  steering
wheel.  Always  keep  your  hands  on  the
steering  wheel  when  using  this  system,
regardless of warnings.

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4-5. Using the driving support systems

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■

Vehicle sway warning function

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

■

Warning message

If the following warning message is displayed on the multi-information display
and the LTA indicator illuminates in orange, follow the appropriate trouble-
shooting procedure. Also, if a different warning message is displayed, follow
the instructions displayed on the screen.

●

“LTA Malfunction. Visit Your Dealer.”
The system may not be operating properly. Have the vehicle inspected by
any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.

●

“LTA Unavailable”
The system is temporarily canceled due to a malfunction in a sensor other
than the front camera. Turn the LTA system off, wait for a little while, and
then turn the LTA system back on.

●

“LTA Unavailable at Current Speed.”
The function cannot be used as the vehicle speed exceeds the LTA opera-
tion range. Drive slower.

■

Customization

Function settings can be changed. (Customizable features:



P. 786)

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.

400

4-5. Using the driving support systems

RSA (Road Sign Assist)



The RSA system recognizes spe-
cific  road  signs  using  the  front
camera  and/or  navigation  system
(when  speed  limit  information  is
available)  to  provide  information
to the driver via the display.

If the system judges that the vehicle is being driven over the speed
limit, performing prohibited actions, etc., according to the recognized
road signs, it notifies the driver through a visual notification and notifi-
cation buzzer.



: If equipped

Summary of function

WARNING

■

Before using the RSA

Do not rely solely upon the RSA system. RSA is a system which supports
the driver by providing information, but it is not a replacement for a driver’s
own vision and awareness. Drive safely by always paying careful attention
to the traffic rules.

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4-5. Using the driving support systems

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When the front camera recognizes a sign and/or information of a sign
is available from the navigation system, the sign will be displayed on
the multi-information display.

●

When the driving assist system
information is selected, a maxi-
mum of 3 signs can be dis-
played. (



P. 168)

●

When a tab other than the driv-
ing assist system information is
selected, the following types of
road signs will be displayed.
(



P. 168)

• Speed limit begins/ends sign
• Speed limit related informa-

tion

sign

(Motorway,

Expressway, Urban area,
Residential area)

• End of prohibition sign
• No-entry sign

(when notification is necessary)

• Speed limit with supplemental sign (Ramp way only)

: For vehicles with navigation system

If signs other than speed limit signs are recognized, they will be dis-
played in an overlapping stack under the current speed limit sign.

Indication on the multi-information display

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4-5. Using the driving support systems

The following types of road signs, including electronic signs and blink-
ing signs, are displayed.

A non-official (not meeting the Vienna Convention) or a recently introduced
traffic sign may not be displayed.

●

Speed limit road signs

: No speed limit information

is displayed when speed limit sign is not

available.

●

Speed limit related information

1, 2

Supported types of road signs

: Speed limit begins/Maximum speed zone begins

: Speed limit ends/Maximum speed zone ends

: Motorway entrance

: Motorway exit

: Expressway entrance

: Expressway exit

: Urban area beginning

: Urban area ending

: Urban area beginning

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4-5. Using the driving support systems

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: Displayed when a sign is recognized but speed limit information for the

road is not available from the navigation system

: No speed limit information

is displayed when speed limit related sign

information is not available.

●

No-overtaking road signs

●

Other road signs

: For vehicles with navigation system

: Urban area ending

: Residential area beginning

: Residential area ending

: No overtaking begins

: No overtaking ends

: No-entry

: End of prohibition

: Stop

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4-5. Using the driving support systems

●

Speed limit with supplemental mark

: Displayed simultaneously with speed limit.

: Contents not recognized.

: Displayed when system detects driving on ramp way.

: Wet

: Rain

: Ice

: Supplemental mark exists

: Exit ramp on right

: Exit ramp on left

: Time

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4-5. Using the driving support systems

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In the following situations, the RSA system will notify the driver.

●

When the vehicle speed exceeds the speed notification threshold of
the speed limit sign displayed, the sign display will be emphasized
and a buzzer will sound.

●

When the RSA system recognizes a no-entry sign and detects that
the vehicle has entered a no-entry area based on the map informa-
tion of the navigation system, the no-entry sign flashes and a
buzzer will sound.(For vehicles with navigation system)

●

If it is detected that your vehicle is overtaking when a no overtaking
sign is displayed on the multi-information display, the displayed sign
will flash and a buzzer will sound.

Depending on the situation, traffic environment (traffic direction,
speed unit) may be detected incorrectly and a notification function
may not operate properly.

■

Setting procedure

Press “



” or “



” of meter control switches and select

. (



P. 168)

Press “



” or “



” of meter control switches and select

, and press

■

Automatic turn-off of RSA sign display

One or more signs automatically turn off in the following situations.

●

No sign has been recognized for a certain distance.

●

The road changes due to a left or right turn, etc.

Notification function

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4-5. Using the driving support systems

■

Conditions in which the function may not operate or detect correctly

In the following situations, RSA does not operate normally and may not rec-
ognize signs, display the incorrect sign, etc. However, this does not indicate a
malfunction.

●

The front camera is misaligned due to a strong impact being applied to the
sensor, etc.

●

Dirt, snow, stickers, etc., are on the windshield near the front camera.

●

In inclement weather such as heavy rain, fog, snow or sand storms.

●

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

●

The sign is dirty, faded, tilted or bent.

●

The contrast of electronic sign is low.

●

All or part of the sign is hidden by the leaves of a tree, a pole, etc.

●

The sign is only visible to the front camera for a short amount of time.

●

The driving scene (turning, lane change, etc.) is judged incorrectly.

●

If a sign not appropriate for the currently traveled lane, but the sign exists
directly after a freeway branches, or in an adjacent lane just before merging.

●

Stickers are attached to the rear of the preceding vehicle.

●

A sign resembling a system compatible sign is recognized.

●

Side road speed signs may be detected and displayed (if positioned in sight
of the front camera) while the vehicle is traveling on the main road.

●

Roundabout exit road speed signs may be detected and displayed (if posi-
tioned in sight of the front camera) while traveling on a roundabout.

●

The front of the vehicle is raised or lowered due to the carried load

●

The surrounding brightness is not sufficient or changes suddenly.

●

When a sign intended for trucks, etc. is recognized.

●

The vehicle is driven in a country with a different direction of traffic.

●

The navigation system map data is outdated. (vehicles with navigation sys-
tem)

●

The navigation system is not operating. (vehicles with navigation system)

●

The speed information displayed on the meter and on the navigation system
(if equipped) may be different due to the navigation system using map data.

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4-5. Using the driving support systems

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■

Speed limit sign display

If the power switch was last turned off while a speed limit sign was displayed
on the multi-information display, the same sign displays again when the
power switch is turned to ON mode.

■

If “RSA Malfunction Visit Your Dealer” is shown

The system may be malfunctioning. Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.

■

Customization

Some functions can be customized. (Customizable features:



P. 787)

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4-5. Using the driving support systems

Dynamic radar cruise control with full-

speed range



In vehicle-to-vehicle distance control mode, the vehicle automatically
accelerates, decelerates and stops to match the speed changes of the
preceding vehicle even if the accelerator pedal is not depressed. In
constant speed control mode, the vehicle runs at a fixed speed.
Use the dynamic radar cruise control with full-speed range on free-
ways and highways.

●

Vehicle-to-vehicle distance control mode (



P. 412)

●

Constant speed control mode (



P. 419)

Multi-information display
Indicators
Set speed
Vehicle-to-vehicle

distance

switch
Cruise control switch

Summary of functions

System Components

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4-5. Using the driving support systems

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WARNING

■

Before using dynamic radar cruise control with full-speed range

●

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 with full-speed range 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. 423

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

may not function correctly:



P. 424

●

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 with full-speed range setting to off,
using the “ON-OFF” button when not in use.

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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 with full-speed range 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 mecha-
nism that allows careless 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 with full-speed range determines
whether the following distance 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 neces-
sary 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 with full-speed range does not include
functions which will prevent 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.

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4-5. Using the driving support systems

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WARNING

■

Situations unsuitable for dynamic radar cruise control with full-speed
range

Do not use dynamic radar cruise control with full-speed range 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 or front
camera

●

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

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4-5. Using the driving support systems

This mode employs a radar to detect the presence of vehicles up to
approximately 100 m (328 ft.) ahead, determines the current vehicle-
to-vehicle following distance, and operates to maintain a suitable fol-
lowing distance from the vehicle ahead. The desired vehicle-to-vehicle
distance can also be set by operating the vehicle-to-vehicle distance
switch.

When driving on downhill slopes, the vehicle-to-vehicle distance may
become shorter.

Example of constant speed cruising
When there are no vehicles ahead

The vehicle travels at the speed set by the driver.

Driving in vehicle-to-vehicle distance control mode

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