Subaru Solterra (2023 year). Manual in english

289

5-4. Using the driving support systems

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freeway junction or in an adjacent

lane just before merging

●

When stickers are attached to the

rear of a preceding vehicle

●

When a sign similar to a system

compatible sign is detected as a

system compatible sign

●

When a speed limit sign for a

frontage road is within detection

range of the front camera

●

When driving around a round-

about

●

When a sign intended for trucks,

etc. is detected

●

Vehicles with navigation system:

When the navigation system map

data is out of date

●

Vehicles with navigation system:

When the navigation system can-

not be used

In this case, the speed limit signs
displayed on the multi-information
display and navigation system dis-
play may differ.

In the following situations, the
RSA system will output a warn-
ing to notify the driver.



If the vehicle speed exceeds
the speed warning threshold
of the speed limit sign dis-
played on the display, the sign
display will be emphasized
and a buzzer will sound.



When the RSA system
detects a do not enter sign
and determines that the vehi-
cle has entered a no-entry
area, the do not enter sign
displayed on the display will
flash and a buzzer will sound.

■

Operating conditions of the

notification functions

●

Excess speed notification function

This function will operate when the
following condition is met:
• A speed limit road sign is recog-

nized by the system.

●

No entry notification function

This function will operate when all of
the following conditions are met:
• More than one no entry road signs

are recognized by the system

simultaneously.

• The vehicle is passing between no

entry road signs recognized by the

system.



The following types of road
signs can be displayed.

However, non-standard or recently
introduced traffic signs may not be
displayed.

Notification function

Types of road signs sup-
ported

Speed limit

Do Not Enter

No U-turn

No Turn On Red

290

5-4. Using the driving support systems



Depending on the specifica-
tions of the vehicle, signs may
be displayed overlapping.

The following settings of the
RSA can be changed through
customize settings. (



P.577)

Stop

Yield

Warning

Duplicate display exam-
ple

Changing RSA settings

Dynamic radar cruise

control

This dynamic radar cruise
control detects the pres-
ence of vehicles ahead,
determines the current vehi-
cle-to-vehicle distance, and
operates to maintain a suit-
able distance from the vehi-
cle ahead. The desired
vehicle-to-vehicle distance
can be set by operating the
vehicle-to-vehicle distance
switch.

Use the dynamic radar
cruise control only on high-
ways and expressways.

WARNING

■

For safe use

●

Driving safely is solely the

responsibility of the driver. Do

not overly rely on this system,

and pay careful attention to the

surrounding conditions in order

to ensure safe driving.

●

The dynamic radar cruise con-

trol provides driving assistance

to reduce the driver’s burden.

However, there are limitations to

the assistance provided. Read

the following items carefully. Do

not overly rely on this system

and always drive carefully.

Conditions under which the sys-
tem may not operate correctly:



P.296

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5-4. Using the driving support systems

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WARNING

●

Set the speed appropriately

according to the speed limit,

traffic flow, road conditions,

weather conditions, etc. The

driver is responsible for confirm-

ing the set speed.

●

Even if the system is operating

correctly, the condition of a pre-

ceding vehicle as recognized by

the driver and detected by the

system may differ. Therefore, it

is necessary for the driver to

pay attention, assess risks, and

ensure safety. Over-reliance on

this system to drive the vehicle

safely may lead to an accident

resulting in death or serious

injury.

■

Precautions for the driving

assist systems

Observe the following precau-

tions, as there are limitations to

the assistance provided by the

system. Over-reliance on this sys-

tem may lead to an accident

resulting in death or serious injury.

●

Details of support provided for

the driver’s vision The dynamic

radar cruise control is only

intended to help the driver in

determining the distance

between the driver’s own vehi-

cle and a designated preceding

vehicle. It is not a system which

allows for careless or inattentive

driving, and is not a system

which assists in poor visibility

conditions. The driver must pay

attention to their surroundings,

even when the vehicle stops.

●

Details of support provided for

the driver’s judgement The

dynamic radar cruise control

determines whether the dis-

tance between the driver’s own

vehicle and a designated pre-

ceding vehicle is within a set

range. It is not capable of mak-

ing any other type of judgement.

Therefore, it is absolutely nec-

essary for the driver to remain

vigilant and to determine

whether or not there is a possi-

bility of danger.

●

Details of support provided for

the driver’s operation The

dynamic radar cruise control

does not include functions

which will prevent or avoid colli-

sions 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 safety.

■

Situations in which the

dynamic radar cruise control

should not be used

Do not use the dynamic radar

cruise control in the following situ-

ations. As the system will not be

able to provide appropriate con-

trol, using it may lead to an acci-

dent resulting in death or serious

injury.

●

Roads where there are pedes-

trians, cyclists, etc.

●

When driving on a highway or

expressway entrance or exit

●

When the approach warning

sounds frequently

●

Situations in which the sensors

may not operate properly:



P.264

●

Situations in which the lane may

not be detected:



P.266

292

5-4. Using the driving support systems

Constant speed cruising:
When there are no vehicles ahead

The vehicle drives at the speed set by the driver.
If the set vehicle speed is exceeded while driving down a hill, the set vehicle
speed display will blink and a buzzer will sound.

Deceleration and follow-up cruising
When a preceding vehicle driving slower than the set vehicle
speed is detected

When a vehicle is detected driving ahead of your vehicle, the vehicle auto-
matically decelerates and if a greater reduction in vehicle speed is neces-
sary, the brakes are applied (the stop lights will come on at this time). The
vehicle is controlled to maintain the vehicle-to-vehicle distance set by the
driver, in accordance with changes in the speed of the preceding vehicle. If
vehicle deceleration is not sufficient and the vehicle approaches the vehicle
ahead, the approach warning will sound.

Acceleration
When there are no longer any preceding vehicles driving slower
than the set vehicle speed

The vehicle accelerates until the set vehicle speed is reached and then
resumes constant speed cruising.

Starting off: If a preceding vehicle stops, the vehicle will also stop
(controlled stop). After the preceding vehicle starts off, pressing
the “RES” switch or depressing the accelerator pedal will resume
follow-up cruising (start off operation). If a start off operation is not

Basic functions

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5-4. Using the driving support systems

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performed, the controlled stop will continue.

■

Meter display

Multi-information display

Set vehicle speed

Indicators

■

Switches

Driving assist switch

Driving assist mode select
switch
Cancel switch

Vehicle-to-vehicle distance
switch
“-” switch

“+” switch/“RES” switch

Press the driving assist mode
select switch to select
dynamic radar cruise control.

The dynamic radar cruise control

indicator will illuminate.

Using the accelerator pedal,
accelerate or decelerate to
the desired vehicle speed
(approximately 20 mph [30
km/h] or more), and press the
driving assist switch to set
the set vehicle speed.

The set vehicle speed will be dis-

played on the multi-information dis-

play.
The vehicle speed at the moment

the switch is released will be the set

vehicle speed.

System components

Setting the vehicle speed

294

5-4. Using the driving support systems

■

Adjusting the set vehicle
speed using the switches

To change the set vehicle
speed, press the “+” or “-” switch
until the desired speed is dis-
played.

Increase set vehicle speed

Decrease set vehicle speed

Short press adjustment: Press the
switch
Long press adjustment: Press and
hold the switch until the desired set
vehicle speed is reached.

The set vehicle speed will
increase or decrease as follows:



For U.S.A.

Short press adjustment: Increases
or decreases by 1 mph (1.6 km/h)
each time the switch is pressed
Long press adjustment: Increases
or decreases in 1 mph (1.6 km/h)
increments continuously while the
switch is pressed and held



Except for U.S.A.

Short press adjustment: By 1 km/h
(0.6 mph) or 1 mph (1.6 km/h) each
time the switch is pressed

Long press adjustment: Increases
or decreases in 5 km/h (3.1 mph) or
5 mph (8 km/h) increments continu-
ously while the switch is pressed
and held
The set vehicle speed adjustment
increment can be changed through
a customize setting.

■

Increasing the set vehicle
speed using the accelerator
pedal

Depress the accelerator
pedal to accelerate the vehi-
cle to the desired vehicle
speed.

Press the “+” switch.

Press the cancel switch or
driving assist switch to cancel
control.

Control will also be canceled if the

brake pedal is depressed. (If the

vehicle has been stopped by sys-

tem control, depressing the brake

pedal will not cancel control.)

Press the “RES” switch to
resume control.

Adjusting the set vehicle
speed

Canceling/resuming con-
trol

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5-4. Using the driving support systems

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Each time the switch is pressed,
the vehicle-to-vehicle distance
setting will change as follows:

If a preceding vehicle is detected,
the preceding vehicle mark

will

be displayed.

The actual vehicle-to-vehicle dis-
tance varies in accordance with the
vehicle speed. Also, when the vehi-
cle is stopped by system control, it
will be stopped at a certain distance
from the preceding vehicle,
depending on the situation, regard-
less of the setting.

■

Operating conditions

●

D shift position is selected.

●

The desired set speed can be set

when the vehicle speed is approx-

imately 20 mph (30 km/h) or more.

(If the vehicle speed is set while

driving at below approximately 20

mph [30 km/h], the set speed will

be set to approximately 20 mph

[30 km/h].)

■

Accelerating after setting the

vehicle speed

As with normal driving, acceleration

can be performed by depressing the

accelerator pedal. After accelerat-

ing, the vehicle will return to the set

vehicle speed. However, while in

vehicle-to-vehicle distance control

mode, the vehicle speed may

decrease to below the set vehicle

speed in order to maintain the dis-

tance from the preceding vehicle.

■

When the vehicle is stopped by

system control during follow-up

cruising

●

When the “RES” switch is pressed

while the vehicle is stopped by

system control, if the preceding

vehicle starts off within approxi-

mately 3 seconds, follow-up cruis-

ing will resume.

●

If the preceding vehicle starts off

within approximately 3 seconds of

the vehicle being stopped by sys-

tem control, follow-up cruising will

resume.

■

Automatic cancelation of vehi-

cle-to-vehicle distance control

mode

In the following situations, vehicle-

to-vehicle distance control mode will

be canceled automatically:

●

When the brake control or output

restriction control of a driving sup-

port system operates (For exam-

ple: Pre-Collision System, drive-

start control)

●

When the parking brake has been

Changing the vehicle-to-
vehicle distance

Illustra-

tion

Number

Vehicle-

to-vehi-

cle dis-

tance

Approximate

Distance (Vehi-

cle Speed: 60

mph [100 km/h])

Extra

long

Approximately

200 ft. (60 m)

Long

Approximately

145 ft. (45 m)

Medium

Approximately

100 ft. (30 m)

Short

Approximately

85 ft. (25 m)

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5-4. Using the driving support systems

operated

●

When the vehicle is stopped by

system control on a steep incline

●

When any of the following are

detected while the vehicle is

stopped by system control:

• The driver’s seat belt is unfas-

tened

• The driver’s door is opened

• Approximately 3 minutes have

elapsed since the vehicle was

stopped

The parking brake may be actived

automatically.
The shift position may automatically

change to P. (



P.238)

●

Situations in which some or all of

the functions of the system cannot

operate:



P.266

■

Dynamic radar cruise control

system warning messages and

buzzers

For safe use:



P.260

■

Preceding vehicles that the sen-

sor may not detect correctly

In the following situations, depend-

ing on the conditions, if the system

cannot provide sufficient decelera-

tion or acceleration is necessary,

operate the brake pedal or accelera-

tor pedal.
As the sensor may not be able to

correctly detect these types of vehi-

cles, the approach warning

(



P.296) may not operate.

●

When a vehicle cuts in front of

your vehicle or changes lanes

away from your vehicle extremely

slowly or quickly

●

When changing lanes

●

When a preceding vehicle is driv-

ing at a low speed

●

When a vehicle is stopped in the

same lane as the vehicle

●

When a motorcycle is traveling in

the same lane as the vehicle

■

Conditions under which the

system may not operate cor-

rectly

In the following situations, operate

the brake pedal (or accelerator

pedal, depending on the situation)

as necessary.
As the sensor may not be able to

correctly detect a vehicle, the sys-

tem may not operate properly.

●

When a preceding vehicle brakes

suddenly

●

When changing lanes at low

speeds, such as in a traffic jam

In situations where the vehicle
approaches a preceding vehicle
and the system cannot provide
sufficient deceleration, such as
if a vehicle cuts in front of the
vehicle, a warning display will
flash and a buzzer will sound to
alert the driver. Depress the
brake pedal to ensure appropri-
ate vehicle-to-vehicle distance.

■

Warnings may not occur
when

In the following situations, the
warning may not operate even
though the vehicle-to-vehicle
distance is short.



When the preceding vehicle is
traveling at the same speed
or faster than your vehicle



When the preceding vehicle is
traveling at an extremely low
speed



Immediately after the vehicle
speed has been set

Approach warning

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

When the accelerator pedal is
depressed

When a curve is detected, the
vehicle speed will begin being
reduced. When the curve ends,
the vehicle speed reduction will
end.

Depending on the situation, the
vehicle speed will then return to the
set vehicle speed.
In situations where vehicle-to-vehi-
cle distance control needs to oper-
ate, such as when a preceding
vehicle cuts in front of your vehicle,
the curve speed reduction function
will be canceled.

■

Situations in which the curve

speed reduction function may

not operate

In situations such as the following,

the curve speed reduction function

may not operate:

●

When the vehicle is being driven

around a gentle curve

●

When the accelerator pedal is

being depressed

●

When the vehicle is being driven

around an extremely short curve

If your vehicle is being driven at
approximately 50 mph (80 km/h)
or more and a lane change to
the passing lane is performed,
when the turn signal lever is
operated and the lane is
changed, the vehicle will accel-
erate up to the set speed to
assist in overtaking.

The system’s recognition of which
lane is the passing lane may be
based solely on the location of the
steering wheel in the vehicle (left-
hand drive/right-hand drive). If the
vehicle is driven in a location where
the passing lane is on the opposite
side of that where the vehicle was
originally sold, the vehicle may
accelerate when the turn signal
lever is operated away from the
passing lane. (e.g. The vehicle was
manufactured for a right-hand traf-
fic location, but is being driven in a
left-hand traffic location. The vehi-
cle may accelerate when the turn
signal lever is operated to the right.)
If your vehicle is being driven at
approximately 50 mph (80 km/h) or
more and the lane is changed to
that with a vehicle traveling slower
than your vehicle, when the turn
signal lever is operated the vehicle
will gradually decelerate to assist in
changing lanes.

The settings of Dynamic radar
cruise control can be changed

Curve speed reduction
function

Support for lane change

Changing Dynamic radar
cruise control settings

298

5-4. Using the driving support systems

through customize settings.
(



P.577)

Cruise control

The vehicle can be driven at
a set speed even if the
accelerator pedal is not
depressed.

Use the cruise control only
on highways and express-
ways.

WARNING

■

For safe use

●

Driving safely is solely the

responsibility of the driver.

Therefore, do not overly rely on

this system. The driver is solely

responsible for paying attention

to the vehicle’s surroundings

and driving safely.

●

Set the speed appropriately

according to the speed limit,

traffic flow, road conditions,

weather conditions, etc. The

driver is responsible for confirm-

ing the set speed.

■

Situations in which cruise

control should not be used

Do not use the cruise control in

the following situations. As the

system will not be able to provide

appropriate control, using it may

lead to an accident resulting in

death or serious injury.

●

On roads with sharp bends

●

On winding roads

●

On slippery roads, such as

those covered with rain, ice or

snow

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5-4. Using the driving support systems

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■

Meter display

Set vehicle speed

Cruise control indicator

■

Switches

Driving assist switch

Driving assist mode select
switch
Cancel switch

“-” switch

“+” switch/“RES” switch

Press the driving assist mode
select switch to select cruise
control.

The cruise control indicator will illu-

minate.

Using the accelerator pedal,
accelerate to the desired
vehicle speed (approxi-
mately 20 mph [30 km/h] or
more), and press the driving
assist switch to set the set
vehicle speed.

The vehicle speed at the moment

the switch is released will be the set

vehicle speed.

WARNING

●

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.

●

When it is necessary to disable

the system:



P.261

System components

Setting the vehicle speed

300

5-4. Using the driving support systems

■

Adjusting the set vehicle
speed using the switches

To change the set vehicle
speed, press the “+” or “-” switch
until the desired speed is dis-
played.

Increase set vehicle speed

Decrease set vehicle speed

The set vehicle speed will
increase or decrease as follows:

Short press adjustment: By 1 mph
(1.6 km/h) or 1 km/h (0.6 mph)
each time the switch is pressed
Long press adjustment: Increases
continuously while the switch is
pressed and held

■

Increasing the set vehicle
speed using the accelerator
pedal

Depress the accelerator
pedal to accelerate the vehi-
cle to the desired vehicle
speed.

Press the “+” switch.

Press the cancel switch or
driving assist switch to cancel
control.

Control will also be canceled if the

brake pedal is depressed.

Press the “RES” switch to
resume control.

■

Automatic cancelation of the

cruise control

In the following situations, the cruise

control will be canceled automati-

cally:

●

When the vehicle speed drops

approximately 10 mph (16 km/h)

or more below the set vehicle

speed

●

When the vehicle speed drops

below approximately 20 mph (30

km/h)

●

When the brake control or output

restriction control of a driving sup-

port system operates (For exam-

ple: PCS, drive-start control)

●

When the parking brake has been

operated

●

Situations in which some or all of

the functions of the system cannot

operate:



P.266

Adjusting the set vehicle
speed

Canceling/resuming con-
trol

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5-4. Using the driving support systems

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Emergency Driving

Stop System

The emergency driving stop
system is a system which
automatically decelerates
and stops the vehicle within
its lane if the driver
becomes unable to con-
tinue driving the vehicle,
such as if they have suf-
fered a medical emergency,
etc.

During LTA (Lane Tracing
Assist) control, if the sys-
tem does not detect driving
operations, such as if the
driver is not holding the
steering wheel, and deter-
mines the driver is not
responsive, the vehicle will
be decelerated and stopped
within its current lane to
help avoid a collision or
reduce the impact of a colli-
sion.

WARNING

■

For safe use

●

Driving safely is solely the

responsibility of the driver. Pay

careful attention to the sur-

rounding conditions in order to

ensure safe driving. The emer-

gency driving stop system is

designed to provide support in

an emergency where it is diffi-

cult for the driver to continue

driving, such as if they have had

a medical emergency. It is not

designed to support driving

while drowsy or in poor physical

health, or inattentive driving.

●

Although the emergency driv-

ing stop system is designed to

decelerate the vehicle within its

lane to help avoid or help

reduce the impact of a collision

if the system determines that it

is difficult for the driver to con-

tinue driving, its effectiveness

may change according to vari-

ous conditions. Therefore, it

may not always be able to

achieve the same level of per-

formance. Also, if the operating

conditions are not met, this

function will not operate.

●

After the emergency driving

stop system operates, if driving

becomes possible again, imme-

diately begin driving again or, if

necessary, park the vehicle on

the shoulder of the road and set

a warning reflector and flare to

warn other drivers of your

stopped vehicle.

●

After this system operates, pas-

sengers should attend to the

driver as necessary and take

appropriate hazard prevention

measures, such as moving to a

place where safety can be

ensured, such as the shoulder

of the road or behind a guard-

rail.

302

5-4. Using the driving support systems

Operation of this system is sep-
arated into 4 control states.
Through control state “warning
phase 1” and “warning phase 2”,
the system determines if the
driver is aware and responsive
while outputting a warning and
controlling the vehicle speed. If
the system determines the
driver is not responsive, it will
operate in control state “deceler-
ation stop phase” and “stop hold
phase” and decelerate and stop
the vehicle. It will then operate
continuously in “stop hold
phase”.

■

Operating conditions

This system operates when all of

the following conditions are met:

●

When the LTA is on

●

When the vehicle speed is

approximately 30 mph (50 km/h)

or more

■

Operation cancelation condi-

tions

In the following situations, system

operation will be canceled:

●

When LTA control has been can-

celed (the LTA switch has been

pressed, etc.)

●

When the dynamic radar cruise

control has been canceled

●

When driver operations are

detected (the steering wheel is

held, the brake pedal, accelerator

pedal, parking brake, hazard light

switch, or turn signal lever is oper-

ated)

●

When the driving assist switch is

pressed while in the stop and hold

phase

●

When the power switch has been

turned from ON to OFF

●

Situations in which some or all of

the functions of the system cannot

operate:



P.266

■

LTA control when operation is

canceled

When emergency driving stop sys-

tem operation is canceled, LTA con-

trol may also be canceled.

If driving operations are not
detected after the hands off
steering wheel warning oper-
ates, a buzzer will sound inter-
mittently and a message will be
displayed to warn the driver, and
the system will judge if the driver
is responsive or not. If driving
operations, such as holding the
steering wheel, are not per-
formed within a certain amount
of time, the system will enter
warning phase 2.

WARNING

●

This system detects the condi-

tion of the driver through the

operation of the steering wheel.

This system may operate if the

driver is aware but intentionally

and continuously does not oper-

ate the vehicle. Also, the system

may not operate if it cannot

determine that the driver is not

responsive, such as if they are

leaning on the steering wheel.

Summary of the system

Warning phase 1

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5-4. Using the driving support systems

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After entering warning phase 2,
a buzzer will sound in short
intervals and a message will be
displayed to warn the driver, and
the vehicle will slowly deceler-
ate. If driving operations, such
as holding the steering wheel,
are not performed within a cer-
tain amount of time, the system
will determine that the driver is
not responsive and enter the
deceleration stop phase.

The audio system will be muted
until the driver becomes respon-
sive.
When the vehicle is decelerating,
the brake lights may illuminate,
depending on the road conditions,
etc.

After entering the deceleration
stop phase, a buzzer will sound
continuously and a message will
be displayed to warn the driver,
and the vehicle will slowly decel-
erate and stop. After the vehicle
stops, the system will enter the
stop and hold phase.

After the vehicle is stopped, the
parking brake will be applied
automatically. After entering the
stop and hold phase, the buzzer
will continue sounding continu-

ously and the emergency flash-
ers (hazard lights) will flash to
warn other drivers of the emer-
gency.

Warning phase 2

Deceleration stop phase

Stop hold phase

304

5-4. Using the driving support systems

Meter control switches

Turning the Blind Spot Monitor
on/off.

Outside rear view mirror indi-
cators

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.

Driving assist information
indicator

Illuminates when the Blind Spot
Monitor is turned off. At this time,
“Blind Spot Monitor OFF” will be
displayed on the multi-information
display.

■

Outside rear view mirror indica-

tor visibility

In strong sunlight, the outside rear

view mirror indicator may be difficult

to see.

■

Customization

Some functions can be customized.

(



P.578)

BSM (Blind Spot Moni-

tor)

The Blind Spot Monitor is a
system that uses rear side
radar sensors installed on
the inner side of the rear
bumper on the left and right
side to assist the driver in
confirming safety when
changing lanes.

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 Blind Spot Monitor is a sup-

plementary function which alerts

the driver that a vehicle is in a

blind spot of the outside rear

view mirrors or is approaching

rapidly from behind into a blind

spot. Do not overly rely on the

Blind Spot Monitor. As the func-

tion cannot judge if it is safe to

change lanes, over reliance

could lead to an accident result-

ing in death or serious injury.

As the system may not function

correctly under certain condi-

tions, the driver’s own visual

confirmation of safety is neces-

sary.

System components

Subaru Solterra (2023 year). Manual in english - page 18