Volvo XC90 T8 Twin Engine Plug-in Hybrid (2017 year). Instruction

DRIVER SUPPORT

}}

* Option/accessory, for more information, see Introduction.

271

Activating/deactivating the

Automatic Speed Limiter (ASL)

The function Automatic Speed Limiter (ASL) is a
supplement to the Speed Limiter (SL) and can
be activated/deactivated.

ASL is activated/deactivated in
the center display's Function
view.

Activating ASL

With SL activated:

1. Tap the

Speed Sign Assist

button

in the

center display's Function view.
> ASL will go into standby mode and a

green indicator light in the button will illu-
minate. A road sign symbol will be dis-
played in center of the speedometer.

2. Press the

button on the left-side steer-

ing wheel keypad.
> ASL will be activated with the vehicle's

current speed.

Deactivating ASL
–

Tap the

Speed Sign Assist

button in the

center display's Function view.
> ASL will be deactivated, the indicator will

be GRAY and the Speed limiter (SL) will
be activated.

WARNING

After switching from ASL to SL, the vehicle
will no longer adapt speed to posted speed
limits. It will only limit the vehicle's maximum
speed.

Related information

•

Speed limiter (SL)

* (p. 267)

•

Automatic Speed Limiter (ASL)

* (p. 269)

Changing tolerance for the

Automatic Speed Limiter

Automatic Speed Limiter can be set to different
tolerance levels.

Posted speed limit tolerance

ASL can be set to allow the vehicle to drive
above or below the posted speed limit. For exam-
ple, if the current posted speed limit is 45 mph
(75 km/h), the driver can opt to allow the vehicle
to drive at a speed of 50 mph (80 km/h).

If this button is tapped while SL is activated, ASL will immediately begin reading road signs.

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

272

Function buttons and symbols (generic illustration)

–

Press the

button (1) until 45 mph

(75 km/h) has changed to 50 mph

(80 km/h) in the center of the speedometer
(4).
> The vehicle will then use the selected tol-

erance +5 mph (+5 km/h) until the vehi-
cle passes a sign with a lower or higher
speed limit. The vehicle will then adjust to
the new maximum speed and the set tol-
erance will be deleted from the system's
memory.

If the Road Sign Information

* system is

activated, the posted speed limit will be
indicated by a RED marker on the spee-
dometer's speed scale.

The set tolerance can be adjusted in the
same way as the set Speed Limiter's set
maximum speed.

NOTE

The greatest tolerance that can be set is +/–
5 mph (10 km/h).

Related information

•

Automatic Speed Limiter (ASL)

* (p. 269)

•

Activating/deactivating the Automatic Speed
Limiter (ASL)

* (p. 271)

•

Road Sign Information (RSI)

* (p. 346)

•

Changing a Speed Limiter (SL)

* maximum

speed (p. 269)

Deactivating/reactivating the Speed

Limiter

The Speed Limiter (SL) can be temporarily deac-
tivated and put in standby mode.

Deactivating and putting SL in standby
mode

To temporarily put the Speed Limiter in standby
mode:

Function buttons and symbols

–

Press the

button (2).

> The symbols in the instrument panel will

change colors from WHITE to GRAY.

This indicates that SL is temporarily in
standby mode and will not limit the vehi-
cle's maximum speed.

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

273

Reactivating SL from standby mode

To reactivate SL after it has temporarily been put
in standby mode:

–

Press the

button (1).

> The maximum speed marker (4) and sym-

bols will change colors to WHITE and the
vehicle's maximum speed will be limited to
the previously set maximum speed.

–

Press the

button (2).

> The symbols will change colors from

GRAY to WHITE and the vehicle's current
speed will be set as the maximum speed.

Increasing the speed with the
accelerator pedal

The set maximum speed can be temporarily
exceeded using the accelerator pedal without
putting SL in standby mode, for instance when
quick acceleration is required.

1. Press the accelerator pedal as far down as

possible and release it when the vehicle has
reached the desired speed.
> SL remains activated (the symbols in the

instrument panel will remain WHITE).

2. Release the accelerator pedal when the tem-

porary acceleration is completed.
> The vehicle will slow down and its speed

will remain under the set maximum speed.

Related information

•

Speed limiter (SL)

* (p. 267)

•

Starting and activating the Speed Limiter
(SL)

* (p. 268)

Turning the Speed Limiter

* off

The Speed Limiter (SL) can be turned off.

Function buttons and symbols

1. Press the

button (2).

> SL will go into standby mode.

2. Press the

◀ (1) or ▶ (3) buttons to select

another function.
> The SL symbol (4) in the instrument panel

will go out and the set maximum speed
will be erased from the system's memory.

3. Press the

button (2) again.

> The newly selected function will be acti-

vated.

Related information

•

Speed limiter (SL)

* (p. 267)

•

Starting and activating the Speed Limiter
(SL)

* (p. 268)

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

274

Cruise Control (CC)

Cruise Control (CC) is designed to assist the
driver by maintaining a set speed. It is primarily
intended for use on long straight roads in steady
traffic, such as on highways and other main
roads in smoothly flowing traffic.

Overview

Function buttons and symbols (generic illustration)

Increases the set speed or CC switches

from standby mode to active mode

The set speed will be resumed

Press to put CC in active mode and set

the current speed or from active mode, press
to put CC in standby mode
— Decreases the set speed

Set speed indicator

The vehicle's current speed

The set speed

In models equipped with the optional Adaptive
Cruise Control (ACC), the driver can toggle
between CC and ACC – see the article "Switch-
ing between Cruise Control and Adaptive Cruise
Control".

WARNING

•

The vehicle must always be driven
according to current traffic/road condi-
tions. The driver must take action if CC
does not maintain a suitable speed
and/or distance to other vehicles.

•

The driver is always responsible for oper-
ating the vehicle in a safe manner.

Related information

•

Starting and activating Cruise Control
(p. 274)

•

Changing Cruise Control speed (p. 275)

•

Deactivating/resuming Cruise Control (CC)
(p. 276)

•

Turning Cruise Control off (p. 277)

•

Adaptive Cruise Control (ACC)

* (p. 281)

•

Switching between Cruise Control and
Adaptive Cruise Control

* (p. 278)

Starting and activating Cruise

Control

Cruise Control (CC) must be selected and acti-
vated before it can regulate the vehicle's speed.

Selecting CC (putting it in standby
mode)

Function buttons and symbols

–

Press

◀ (1) or ▶ (3) to scroll to the CC

(

) function.

> The symbol (4) will be displayed in the

instrument panel. This indicates that CC
has been selected and can then be acti-
vated to maintain a set speed.

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

275

NOTE

Before CC can be activated, the vehicle's
speed must be at least 20 mph (30 km/h).
This is also the lowest speed that can be set.

Activating CC (putting it in active mode
and setting a speed)

–

With the

symbol displayed (CC is in

standby mode), press the

button (2) on

the left-side steering wheel keypad.
> This puts CC in active mode and will

maintain the vehicle's current speed.

Related information

•

Cruise Control (CC) (p. 274)

•

Switching between Cruise Control and
Adaptive Cruise Control

* (p. 278)

•

Deactivating/resuming Cruise Control (CC)
(p. 276)

•

Turning Cruise Control off (p. 277)

Changing Cruise Control speed

Changing a set speed

Function buttons and symbols (generic illustration)

–

Change a set speed by pressing the

(1)

or — (3) buttons briefly or by pressing and
holding them:

•

Press briefly: changes speed in
+/– 5 mph (+/– 5 km/h) increments.
Each press changes the vehicle's speed
by +/– 5 mph (+/– 5 km/h).

•

Press and hold: changes the speed
+/– 1 mph (+/– 1 km/h) at a time.
Release the button when the set speed
indicator (4)/(6) has moved to the desired
speed.

If speed is increased by pressing the accelerator
pedal before the

button is pressed, the vehi-

cle's speed when the button is pressed will

become the set speed assuming that the accel-
erator pedal is still depressed when the button is
pressed.

A temporary increase in speed, such as when
passing another vehicle, does not affect the CC
set speed. The vehicle will return to the set speed
when the accelerator pedal is released. Always
observe posted speed limits.

Engine braking instead of applying the
brakes

CC regulates speed by applying the brakes
lightly. To avoid a loss of speed when driving
down hills, use the engine braking function
instead of letting the CC apply the brakes. In this
situation, the driver can temporarily deactivate the
CC braking function.

To do so:

–

Press the accelerator pedal approx. halfway
down and release it.
> CC will automatically deactivate the auto-

matic brake function and will then only
use the engine braking function.

Related information

•

Cruise Control (CC) (p. 274)

DRIVER SUPPORT

276

Deactivating/resuming Cruise

Control (CC)

Cruise Control (CC) can be temporarily deacti-
vated and put in standby mode.

Deactivating and putting CC in standby
mode

To temporarily deactivate and put Cruise Control
in standby mode:

Function buttons and symbols (generic illustration)

–

Press the

button (2).

> The set speed marker (4) and symbols will

change colors from WHITE to GRAY.

This indicates that CC is temporarily in
standby mode and will not maintain a set
speed.

Standby mode due to action by the driver

CC is temporarily deactivated and put in standby
mode if:

•

the brakes are applied

•

The gear selector is moved to N

•

the vehicle is driven faster than the set
speed for more than 1 minute.

In these cases, the driver will have to regulate the
vehicle's speed.

A temporary increase in speed, such as when
passing another vehicle, does not affect the CC
set speed. The vehicle will return to the set speed
when the accelerator pedal is released.

Automatic standby mode

CC switches automatically to standby mode if:

•

the wheels lose traction

•

engine speed (rpm) is too high/low

•

brake temperature is too high

•

the vehicle's speed goes below approx.
20 mph (30 km/h)

In these cases, the driver will have to regulate the
vehicle's speed.

Reactivating CC from standby mode

To reactivate CC after it has temporarily been put
in standby mode:

–

Press the

button (1).

> The set speed marker (4) will change

color from GRAY to WHITE. The vehicle
will then return to the most recently set
speed.

WARNING

There may be a significant increase in speed
after the

button has been pressed.

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

277

–

Press the

button (2).

> The set speed marker (4) and symbols will

change colors from GRAY to WHITE. CC
will then set and maintain the vehicle's
current speed.

Related information

•

Cruise Control (CC) (p. 274)

•

Starting and activating Cruise Control
(p. 274)

Turning Cruise Control off

Cruise Control (CC) can be deactivated (turned
off).

Function buttons and symbols

1. Press the

button (2) on the left-side

steering wheel keypad.
> This puts CC in standby mode.

2. Press the

◀ or ▶ button to switch to another

function.
> The Cruise Control symbol in the instru-

ment panel

will go out.

3. Press the

button (2) again.

> Another function will be activated and the

set speed in the CC system's memory will
be erased.

In models equipped with the optional Adaptive
Cruise Control (ACC), the driver can toggle

between CC and ACC – see the article "Switch-
ing between Cruise Control and Adaptive Cruise
Control".

Related information

•

Cruise Control (CC) (p. 274)

•

Starting and activating Cruise Control
(p. 274)

•

Switching between Cruise Control and
Adaptive Cruise Control

* (p. 278)

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

278

Switching between Cruise Control

and Adaptive Cruise Control

In models equipped with the optional ACC, the
driver can toggle between CC and ACC.

A symbol in the instrument panel will indicate
which system is currently being used:

Cruise Control

ACC

Adaptive Cruise Control

If the symbol is WHITE, the function is active. If the symbol is

GRAY, the function is in standby mode.

Switching from ACC to CC

To switch from ACC to CC:

1. Put ACC in standby mode with the

but-

ton on the left-side steering wheel keypad.

2. From the center display's Function view, tap

the

Cruise control

button.

> The symbol in the instrument panel will

change from

(ACC) to

(CC) and CC is in standby mode (ready
for use but not currently maintaining a set
speed).

3. Press the

button on the left-side steer-

ing wheel keypad.
> CC goes into active mode and sets the

vehicle's current speed.

WARNING

Switching from ACC to CC means that:

•

Your vehicle will no longer automatically
maintain a set distance to a vehicle
ahead.

•

Only the set speed will be maintained and
the driver will have to apply the brakes
when needed.

If CC was activated when the engine was turned
off, ACC will be selected and go into standby
mode when the engine is restarted.

Switching from CC to ACC

To switch from CC to ACC:

1. Put CC in standby mode with the

button

on the left-side steering wheel keypad.

2. In the center display's Function view, tap the

Adaptive Cruise Control

button.

> The symbol in the instrument panel will

change from

(CC) to

(ACC) and ACC is in standby mode (ready
for use but not currently maintaining a set
speed/time interval).

3. Press the

button on the left-side steer-

ing wheel keypad.
> ACC goes into active mode and sets the

vehicle's current speed and the selected
time interval to the vehicle ahead.

Related information

•

Cruise Control (CC) (p. 274)

•

Adaptive Cruise Control (ACC)

* (p. 281)

•

Center display overview (p. 33)

DRIVER SUPPORT

}}

* Option/accessory, for more information, see Introduction.

279

Distance Alert

Distance Alert is a function that alerts the driver
if the time interval to the vehicle ahead is too
short.

Distance Alert is active at speeds above approxi-
mately 20 mph (30 km/h) and only reacts to a
vehicle ahead that is driving in the same direc-
tion. No information is provided for vehicles driv-
ing toward you, moving very slowly, or at a stand-
still.

Warning light (generic illustration)

A warning light in the windshield glows steadily if
your vehicle is closer to the one ahead than the
set time interval.

NOTE

Strong sunlight, reflections, extreme light con-
trasts, the use of sunglasses, or if the driver is
not looking straight ahead may make the vis-
ual warning signal in the windshield difficult to
see.

NOTE

Distance Alert only monitors distance to the
vehicle ahead while Adaptive Cruise Control is
in standby mode or off.

WARNING

Distance Alert only indicates the distance to
the vehicle ahead. It does not affect the
speed of your vehicle.

Head-up-display

Distance Alert symbol in the windshield (generic illustra-
tion)

In vehicle is equipped with the head-up display

the symbol in the windshield will only appear if
the distance to the vehicle ahead is shorter than
the preset value. However, the

Show Driver

Support In Head-Up Display

function has to

be activated in the Settings menu. See the article
"Head-up display" for additional information.

NOTE

Strong sunlight, reflections, extreme light con-
trasts, the use of sunglasses, or if the driver is
not looking straight ahead may make the vis-
ual warning signal in the windshield difficult to
see.

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

280

Related information

•

Distance Alert

* limitations (p. 281)

•

Using Distance Alert

* (p. 280)

•

Head-up display (HUD)

* (p. 122)

Using Distance Alert

Distance Alert is used as follows:

Operation

Pull down the center display's
Top view and select

Settings

followed by

Distance alert

Tap to turn the function On or
Off.

Setting a time interval

Controls for setting a time interval

Reduce the time interval

Increase the time interval

Distance/time indicator

–

Press button (1) or (2) on the left-side steer-
ing wheel keypad to reduce or increase the
time interval to the vehicle ahead.
> The indicator (3) shows the current time

interval.

Different time intervals to the
vehicle ahead can be selected
and are shown in the instru-
ment panel as 1–5 horizontal
bars. The greater the number of
bars, the longer the time inter-
val.

One bar between the vehicles represents a time
interval of approximately 1 second; 5 bars is
approximately 3 seconds.

The same symbol appears if Adaptive Cruise
Control is activated.

NOTE

•

The greater the vehicles' speed, the
greater the distance between them for a
set time interval.

•

The set time interval is also used by
Adaptive Cruise Control

•

Only use time intervals permitted by local
traffic regulations.

Related information

•

Distance Alert

* (p. 279)

DRIVER SUPPORT

}}

* Option/accessory, for more information, see Introduction.

281

Distance Alert

* limitations

Distance Alert uses the same radar sensor as
Adaptive Cruise Control

* and has several limita-

tions.

WARNING

•

The radar sensor has a limited field of
vision. In some situations it may detect a
vehicle later than expected or not detect
other vehicles at all.

•

The radar sensor cannot cover all driving
situations and traffic, weather and road
conditions.

•

The driver is responsible for maintaining a
safe distance and speed and must inter-
vene if the various driver support systems
do not maintain a suitable speed or suita-
ble distance to the vehicle ahead.

•

Maintenance of radar sensor components
may only be performed by a trained and
qualified Volvo technician.

•

Strong sunlight, reflections from the road
surface, strong lighting contrasts or using
sunglasses may make the warning light in
the windshield difficult to see.

WARNING

•

Poor weather or winding roads can affect
the radar sensor's capacity to detect vehi-
cles ahead.

•

A vehicle's size (e.g., a motorcycle) can
also affect the radar sensor's capacity to
detect another vehicle. This may result in
the warning light illuminating at a shorter
distance than the one that has been set
or not illuminating at all.

•

High speeds may also result in the warn-
ing light illuminating at a shorter distance
than the one that has been set due to
limitations in the radar sensor's range.

For additional information, see also the article
"Radar sensor limitations."

Related information

•

Radar sensor limitations (p. 319)

•

Distance Alert

* (p. 279)

Adaptive Cruise Control (ACC)

ACC is an optional system designed to assist
the driver by maintaining a set speed or a set
time interval to the vehicle ahead.

ACC helps provide more relaxed driving on long
trips on highways or other major roads in a rela-
tively even flow of traffic.

The camera and radar sensor monitor the distance to
the vehicle ahead (generic illustration - certain details
may vary from model to model)

The driver sets that desired speed and time inter-
val to the vehicle ahead. When the camera and
radar sensor detects a slower moving vehicle
ahead, your vehicle's speed is automatically
adapted. When there are no longer slower mov-
ing vehicles ahead, your vehicle will accelerate to
resume the set speed.

ACC is designed to follow a vehicle ahead in the
same lane and maintain a time interval to that

DRIVER SUPPORT

282

vehicle set by the driver. If the radar sensor does
not detect a vehicle ahead, ACC will instead
maintain the speed set by the driver.

ACC is designed to smoothly regulate speed.
However, the driver must apply the brakes in sit-
uations that require immediate braking such as
when there are great differences in speed
between vehicles, or if the vehicle ahead brakes
suddenly. Due to limitations in the radar sensor,
braking may occur unexpectedly or not at all.

Adaptive Cruise Control can follow another vehi-
cle from a standstill up to 125 mph (200 km/h).
Always observe posted speed limits.

The driver can also toggle between ACC and
Cruise Control (CC) – see the article "Switching
between Cruise Control and Adaptive Cruise
Control".

WARNING

•

It is advisable to read through all of the
related articles pertaining to ACC (see
the list at the end of this article).

•

Adaptive Cruise Control cannot cover all
driving situations and traffic, weather and
road conditions.

•

This system is designed to be a supple-
mentary driving aid. It is not, however,
intended to replace the driver's attention
and judgement. The driver is responsible
for maintaining a safe distance and speed
and must intervene if Adaptive Cruise
Control does not maintain a suitable
speed or suitable distance to the vehicle
ahead.

•

Maintenance of ACC components may
only be performed by a trained and quali-
fied Volvo technician.

Overview

The distance to the vehicle ahead (in the same
lane) is monitored by a radar sensor. Your vehi-
cle's speed is regulated by accelerating and
braking. The brakes may emit a sound when they
are being modulated by the adaptive cruise con-
trol system. This is normal.

WARNING

•

Adaptive Cruise Control is not a collision
avoidance system. The driver is always
responsible for applying the brakes if the
system does not detect another vehicle.

•

Adaptive Cruise Control does not react to
people or animals, or small vehicles such
as bicycles and motorcycles. It also does
not react to slow moving, parked or
approaching vehicles, or stationary
objects.

•

Do not use Adaptive Cruise Control in
demanding driving conditions such as city
driving or other heavy traffic situations, in
slippery conditions, when there is a great
deal of water or slush on the road, during
heavy rain or snow, in poor visibility, on
winding roads or on highway on- or off-
ramps.

DRIVER SUPPORT

}}

283

Controls

Function buttons and symbols (generic illustration)

Increases the set speed or puts ACC back
into active mode (previous settings will be
resumed)
Puts ACC in active mode and stores the cur-
rent speed or puts ACC in standby mode
Reduces the set speed

Increases the time interval/distance to the
vehicle ahead
Reduces the time interval/distance to the
vehicle ahead
Target vehicle indicator: ACC has detected
and is following a target vehicle using the set
time interval
Distance/time indicator

Instrument panel

Speed indicators

Set speed

Speed of the vehicle ahead

The current speed of your vehicle

See the article "Adaptive cruise control symbols
and messages" for examples of different combi-
nations of symbols, depending on the traffic sit-
uation.

Collision warning

Warning light in the windshield

Adaptive Cruise Control can exert brake force
that is equivalent to approximately 40% of the
vehicle's total braking capacity.

In situations requiring more brake force than
ACC can provide and if the driver does not apply
the brakes, an audible signal from the City Safety
system will sound and warning light will illuminate
in the windshield to alert the driver to react.

NOTE

Strong sunlight, reflections, extreme light con-
trasts, the use of sunglasses, or if the driver is
not looking straight ahead may make the vis-
ual warning signal in the windshield difficult to
see.

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

284

WARNING

Adaptive Cruise Control only warns of vehicles
detected by the radar sensor. In some cases
there may be no warning or the warning may
be delayed. The driver should always apply the
brakes when necessary.

Head-up-display

A flashing light alerts the driver

A flashing icon will appear in the head-up display
to alert the driver of a collision risk.

NOTE

Strong sunlight, reflections, extreme light con-
trasts, the use of sunglasses, or if the driver is
not looking straight ahead may make the vis-
ual warning signal in the windshield difficult to
see.

Related information

•

Starting and activating Adaptive Cruise
Control (ACC)

* (p. 284)

•

Changing Adaptive Cruise Control (ACC)
speed (p. 287)

•

Setting an Adaptive Cruise Control time
interval (p. 288)

•

Changing target vehicles and automatic
braking with Adaptive Cruise Control (ACC)
(p. 289)

•

Switching between Cruise Control and
Adaptive Cruise Control

* (p. 278)

•

Passing Assistance with Adaptive Cruise
Control or Pilot Assist-2 (p. 289)

•

Deactivating/resuming Adaptive Cruise
Control (ACC) (p. 285)

•

Adaptive Cruise Control (ACC) - trouble-
shooting (p. 291)

•

Adaptive Cruise Control (ACC) symbols and
messages (p. 293)

•

•

•

Head-up display (HUD)

* (p. 122)

•

Radar sensor limitations (p. 319)

Starting and activating Adaptive

Cruise Control (ACC)

ACC must first be put in active mode before it
can be started in order to regulate speed or a
set time interval to the vehicle ahead.

Starting ACC (putting it in standby
mode)

Function buttons and symbols

–

Press

◀ (2) or ▶ (3) to scroll to the ACC

(

) function. The symbol (4) will be dis-

played in the instrument panel.
> The symbol indicates that ACC has been

started and is in standby mode. In
standby mode, the vehicle will not main-
tain a set speed or a time interval to the
vehicle ahead.

DRIVER SUPPORT

}}

* Option/accessory, for more information, see Introduction.

285

Activating ACC (putting it in active
mode and setting a speed)

Before ACC can be put in active mode:

•

The driver's seat belt must be buckled and
the driver's door must be closed.

•

There must be a vehicle ahead (a target vehi-
cle) within a reasonable distance or your
vehicle's current speed must be at least
9 mph (15 km/h).

–

With the

symbol displayed (ACC is in

standby mode), press the

button (1) on

the left-side steering wheel keypad.
> This puts ACC in active mode and sets

the vehicle's current speed, which is indi-
cated by digits in the center of the speed-
ometer.

The time interval to the vehi-
cle ahead will only be shown
when two vehicles are dis-
played.

A speed interval will also be
indicated:

•

The higher speed is the one set in ACC

•

The lower one is the speed of the vehicle
ahead (the target vehicle).

Related information

•

Adaptive Cruise Control (ACC)

* (p. 281)

•

Setting an Adaptive Cruise Control time
interval (p. 288)

•

Deactivating/resuming Adaptive Cruise
Control (ACC) (p. 285)

Deactivating/resuming Adaptive

Cruise Control (ACC)

ACC can be put temporarily in standby mode
and then reactivated.

Function buttons and symbols

To temporarily deactivate and put Adaptive Cruise
Control in standby mode:

–

Press the

button (2).

> The

symbol in the instrument panel

will change colors from WHITE to GRAY
and the set speed in the center of the
speedometer will change from BEIGE to
GRAY.

DRIVER SUPPORT

* Option/accessory, for more information, see Introduction.

286

WARNING

When ACC is in standby mode, the driver has
to control the vehicle's speed and distance to
a vehicle ahead.

When ACC is in standby mode, the driver will
be alerted if the distance to the vehicle ahead
is too short by the Distance Alert function.
See the article "Distance Alert" for additional
information.

Standby mode due to action by the driver

ACC is temporarily deactivated and put in
standby mode if:

•

the brakes are applied

•

The gear selector is moved to N

•

the vehicle is driven faster than the set
speed for more than 1 minute.

In these cases, the driver will have to regulate the
vehicle's speed.

A temporary increase in speed, such as when
passing another vehicle, does not affect the ACC
set speed. The vehicle will return to the set speed
when the accelerator pedal is released.

Automatic standby mode

ACC interacts with other systems, such as
Electronic Stability Control. If any of these other
systems are not functioning properly, ACC will
turn off automatically.

WARNING

If this happens, the driver will be alerted by an
audible signal and a message in the instru-
ment panel. The driver will have to adapt the
vehicle's speed, apply the brakes when nec-
essary and keep a safe distance to the vehicle
ahead.

ACC switches automatically to standby mode if:

•

the vehicle's speed goes below approx.
3 mph (5 km/h) and ACC cannot determine
if the vehicle ahead is stationary or is an
object such as a speed bump, etc

•

the vehicle's speed goes below approx.
3 mph (5 km/h) and the vehicle ahead
changes lanes or turns so that ACC no
longer has a target vehicle to follow

•

the driver opens the door

•

the driver unbuckles the seat belt

•

the engine speed (rpm) is too high/low

•

the wheels lose traction

•

the brake temperature is too high

•

the parking brake is applied

•

the stability system's

ESC Sport Mode

activated

•

the

Off Road

drive mode is selected

•

The radar sensor is covered by e.g., wet snow
or if heavy rain interferes with radar waves

Reactivating ACC from standby mode

Generic illustration

To reactivate ACC after it has temporarily been
put in standby mode:

–

Press the

button (1).

> The vehicle will then return to the most

recently set speed.

WARNING

There may be a significant increase in speed
after the

button has been pressed.

Related information

•

Adaptive Cruise Control (ACC)

* (p. 281)

•

Starting and activating Adaptive Cruise
Control (ACC)

* (p. 284)

•

Setting an Adaptive Cruise Control time
interval (p. 288)

Volvo XC90 T8 Twin Engine Plug-in Hybrid (2017 year). Instruction - part 16