Volvo S90 (2021 year). Manual in english - page 18

DRIVER SUPPORT

* Option/accessory.

314

Deactivating cruise control

Cruise control (CC

44

) can be deactivated and

switched off.

1. Press the steering wheel button 

 (2).

> The symbol and indicators turn grey –

cruise control is set in standby mode.

2. Press the steering wheel button 

◀

 (1) or 

▶

(3) to change to another function.
> The driver display's symbol and indica-

tor for cruise control (4) are switched
off – which deletes the stored maxi-
mum speed.

Related information

•

Cruise control (p. 312)

•

Change between cruise control and adap-
tive cruise control

*

 in the centre display

(p. 322)

•

Selecting and activating cruise control
(p. 313)

•

Standby mode for cruise control (p. 314)

Standby mode for cruise control

Cruise control (CC

45

) can be deactivated and

set in standby mode. This can take place due
to driver intervention or automatically.

Standby mode means that the function is
selected in the driver display but not activated.
In this case, cruise control does not regulate
speed.

Standby mode on driver intervention

Cruise control is deactivated and set to
standby mode if any of the following occur:

•

The foot brake is used.

•

The gear selector is moved to 

N

 position.

•

The clutch pedal is held depressed for
longer than 1 minute.

•

The driver maintains a speed higher than
the stored speed for longer than 1 minute.

The driver must then control the speed him-
self/herself.

A temporary increase in speed with the accel-
erator pedal, e.g. during overtaking, does not
affect the setting - the car returns to the last
stored speed when the accelerator pedal is
released.

44

Cruise Control

45

Cruise Control

DRIVER SUPPORT

}}

* Option/accessory.

315

Automatic standby mode

Activation of automatic standby mode can be
due to one of the following:

•

The wheels are losing traction.

•

The engine speed is too low/high.

•

Brake temperature is too high.

•

Speed falls below 30 km/h (20 mph).

The driver must then control the speed him-
self/herself.

Related information

•

Cruise control (p. 312)

•

Selecting and activating cruise control
(p. 313)

•

Deactivating cruise control (p. 314)

Adaptive cruise control

*

46

The adaptive cruise control (ACC

47

) can help

the driver to maintain a constant speed, com-
bined with a preset time interval to the vehi-
cle ahead.

The camera and radar unit measures the distance to

the vehicle ahead.

An adaptive cruise control can provide a more
relaxing driving experience on long journeys on
motorways and long straight main roads in
smooth traffic flows.

The driver selects the desired speed and a
time interval to the vehicle ahead. If the cam-
era and radar unit detects a slower vehicle in
front of the car, the speed is adapted automat-
ically via the preset time interval to the vehicle.

When the road is clear again the car returns to
the selected speed.

If the cornering support

*

 function is activated,

this may also affect the speed of the car.

The adaptive cruise control aims to:

•

regulate the speed smoothly. In situations
that demand sudden braking the driver
must brake himself/herself. This applies in
cases of large speed differences or if the
vehicle in front brakes suddenly. Due to
the limitations of the radar unit, braking
may come unexpectedly or not at all.

•

follow the vehicle ahead in the same lane
at a time interval set by the driver. If the
radar unit cannot see any vehicle in front
then the car will instead maintain the
speed set and stored by the driver. This
also takes place if the speed of the vehicle
ahead increases and exceeds the stored
speed.

46

This function can come as either standard or an option depending on the market.

47

Adaptive Cruise Control

||

DRIVER SUPPORT

* Option/accessory.

316

WARNING

•

The function is supplementary driver
support intended to facilitate driving
and make it safer – it cannot handle all
situations in all traffic, weather and
road conditions.

•

•

Driver support functions are not a sub-
stitute for the driver's attention and
judgement. The driver is always
responsible for ensuring the car is
driven in a safe manner, at the appro-
priate speed, with an appropriate dis-
tance to other vehicles, and in accord-
ance with current traffic rules and reg-
ulations.

IMPORTANT

Maintenance of driver support components
must only be performed at a workshop –
an authorised Volvo workshop is recom-
mended.

Related information

•

Driving support systems (p. 290)

•

Controls for adaptive cruise control

*

(p. 316)

•

Display mode for adaptive cruise control

*

(p. 317)

•

Selecting and activating adaptive cruise
control

*

 (p. 318)

•

Limitations for adaptive cruise control

*

(p. 321)

•

Symbols and messages for adaptive
cruise control

*

 (p. 323)

•

Warning from driver support in the event
of a collision risk (p. 340)

•

Set time interval to vehicle ahead (p. 343)

•

Set the stored speed for driver support
(p. 342)

•

Automatic braking with driver support
(p. 344)

•

Change of target with driver support
(p. 341)

•

Overtaking Assistance

*

 (p. 339)

Controls for adaptive cruise

control

*

48

A summary of how adaptive cruise control
(ACC

49

) is controlled using the left-hand key-

pad on the steering wheel and how the func-
tion is shown in the display.

: 

From standby mode

 - activates and

stores the current speed

: 

From active mode

 - deactivates/

changes to standby mode

: Activates the function from standby

mode and resumes stored speed

: Increases the stored speed

: Reduces stored speed

48

This function can be either standard or optional, depending on market.

49

Adaptive Cruise Control

DRIVER SUPPORT

}}

* Option/accessory.

317

Increases the time interval to vehicles
ahead
Reduces the time interval to vehicles
ahead
Target vehicle indicator: The function has
detected and is following a target vehicle
at the preset time interval
Symbol for time interval to vehicles ahead

Related information

•

Adaptive cruise control

*

 (p. 315)

•

Limitations for adaptive cruise control

*

(p. 321)

Display mode for adaptive cruise

control

*

50

The following image example shows how
Adaptive cruise control (ACC

51

) can be shown

in the display in the different context.

Speed

Indication of speeds

Stored speed

Speed of vehicle ahead

Current speed of your car

Time interval

The time interval is only
adjusted to the vehicle ahead
by the Adaptive cruise control
when the distance symbol
shows two vehicles. At the
same time a speed range is
marked.

When driving

In the following illustrative example, the road
sign information

*

 (RSI

52

) function informs the

driver that the maximum permitted speed is
130 km/h (80 mph).

50

This function can be either standard or optional, depending on market.

51

Adaptive Cruise Control

52

Road Sign Information

||

DRIVER SUPPORT

* Option/accessory.

318

The previous illustration shows that the adap-
tive cruise control is set to maintain 110 km/h
(68 mph) and that there is no vehicle ahead to
follow.

The previous illustration shows that the adap-
tive cruise control is set to maintain 110 km/h
(68 mph) and at the same time is following a

vehicle ahead which is keeping the same
speed.

Related information

•

Adaptive cruise control

*

 (p. 315)

•

Limitations for adaptive cruise control

*

(p. 321)

Selecting and activating adaptive

cruise control

*

53

Adaptive cruise control (ACC

54

) must first be

selected and then activated to enable it to
control speed and distance.

To start the function requires the following:

•

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

•

There must be a vehicle (the "target vehi-
cle") within reasonable distance in front of

DRIVER SUPPORT

}}

* Option/accessory.

319

the car, or the current speed must be at
least 15 km/h (9 mph).

•

For cars with manual gearbox. Speed
must be at the lowest 30 km/h (20 mph).

1. Press the steering wheel button 

◀

 (2) or 

▶

(3) to scroll to the adaptive cruise control
symbol 

 (4).

> The symbol is grey – the adaptive

cruise control is in standby mode.

2. When speed limiter is selected – press the

steering wheel button 

 (1) to activate.

> The symbol is white – the speed limiter

is started and the current speed is
stored as maximum speed.

Reactivating adaptive cruise control to
the last stored speed

–

When the adaptive cruise control is
selected – press the steering wheel but-
ton 

 to activate.

> The cruise control markings and sym-

bols in the driver display change colour
from GREY to WHITE — the car will
now follow the most recently stored
speed again.

WARNING

A significant increase in speed may follow
when the speed is resumed with the 

steering wheel button.

Related information

•

Adaptive cruise control

*

 (p. 315)

•

Deactivating adaptive cruise control

*

(p. 319)

•

Change between cruise control and adap-
tive cruise control

*

 in the centre display

(p. 322)

•

Limitations for adaptive cruise control

*

(p. 321)

Deactivating adaptive cruise

control

*

55

The adaptive cruise control (ACC

56

) can be

deactivated and switched off.

1. Press the steering wheel button 

 (1).

> The symbol and indicators turn grey –

the adaptive cruise control is set in
standby mode. The indicator for time
interval and symbol for target vehicle, if
activated, are also switched off.

53

This function can be either standard or optional, depending on market.

54

Adaptive Cruise Control

55

This function can be either standard or optional, depending on market.

56

Adaptive Cruise Control

||

DRIVER SUPPORT

* Option/accessory.

320

2. Press the steering wheel button 

◀

 (2) or 

▶

(3) to change to another function.
> The driver display's symbol and indica-

tor for adaptive cruise control (4) are
switched off – which deletes the stored
maximum speed.

WARNING

•

With the adaptive cruise control is in
standby mode, the driver must inter-
vene and regulate both speed and dis-
tance to the vehicle ahead.

•

When the adaptive cruise control is in
standby mode and the car comes too
close to a vehicle ahead, the driver may
be warned of the short distance by the
Distance Warning

*

 function instead.

Related information

•

Adaptive cruise control

*

 (p. 315)

•

Selecting and activating adaptive cruise
control

*

 (p. 318)

•

Change between cruise control and adap-
tive cruise control

*

 in the centre display

(p. 322)

•

Limitations for adaptive cruise control

*

(p. 321)

Standby mode for adaptive cruise

control

*

57

Adaptive cruise control (ACC

58

) can be deac-

tivated and set to standby mode. This can
take place due to driver intervention or auto-
matically.

Standby mode means that the function is
selected in the driver display but not activated.
Adaptive cruise control does not then regulate
the speed or distance to the vehicle in front.

Standby mode on driver intervention

The adaptive cruise control is deactivated and
set in standby mode if any of the following
occurs:

•

The foot brake is used.

•

The gear selector is moved to 

N

 position.

•

The driver maintains a speed higher than
the stored speed for longer than 1 minute.

•

The clutch pedal is depressed for approx. 1
minute - applies to cars with manual gear-
box.

A temporary increase in speed with the accel-
erator pedal, e.g. during overtaking, does not
affect the setting - the car returns to the last
stored speed when the accelerator pedal is
released.

WARNING

•

With the adaptive cruise control is in
standby mode, the driver must inter-
vene and regulate both speed and dis-
tance to the vehicle ahead.

•

When the adaptive cruise control is in
standby mode and the car comes too
close to a vehicle ahead, the driver may
be warned of the short distance by the
Distance Warning

*

 function instead.

Automatic standby mode

WARNING

With automatic standby mode, the driver is

warned via an acoustic signal and a mes-

sage on the driver display.

•

The driver must then regulate the car's
speed, apply the brakes as needed and
maintain a safe distance to other vehi-
cles.

57

This function can be either standard or optional, depending on market.

58

Adaptive Cruise Control

DRIVER SUPPORT

}}

* Option/accessory.

321

Automatic standby mode may be engaged in
the event of one of the following:

•

One of the systems that Adaptive cruise
control is dependent on stops working,
e.g. stability control / anti-skid (ESC

59

).

•

The driver opens the door.

•

The driver takes off the seatbelt.

•

The engine speed is too low/high.

•

One or more wheels lose traction.

•

The brake temperature is high.

•

The parking brake is applied.

•

The camera and radar unit is covered by
e.g. snow or heavy rainfall (camera lens/
radio waves are blocked).

•

The speed is below 5 km/h (3 mph) and
ACC is uncertain whether the vehicle
ahead is a stationary vehicle or an object,
such as a speed bump.

•

The speed is below 5 km/h (3 mph) and
the vehicle ahead turns off so that ACC no
longer has a vehicle to follow.

•

The speed is reduced to below 30 km/h
(20 mph) - only applies to cars with man-
ual gearbox.

Related information

•

Adaptive cruise control

*

 (p. 315)

•

Selecting and activating adaptive cruise
control

*

 (p. 318)

•

Deactivating adaptive cruise control

*

(p. 319)

•

Limitations for adaptive cruise control

*

(p. 321)

Limitations for adaptive cruise

control

*

60

Adaptive Cruise Control (ACC

61

) may have

limitations in certain situations.

Steep roads and/or heavy load

Bear in mind that the adaptive cruise control is
primarily intended for use when driving on
level road surfaces. The function may have dif-
ficulty in keeping the correct distance from the
vehicle ahead when driving on steep downhill
slopes - in which case, be extra attentive and
ready to brake.

Do not use adaptive cruise control if the car
has a heavy load or a trailer is connected to
the car.

Drive mode unavailable

Drive mode 

Off Road

 cannot be selected

when the adaptive cruise control is activated.

59

Electronic Stability Control

60

This function can be either standard or optional, depending on market.

61

Adaptive Cruise Control

||

DRIVER SUPPORT

* Option/accessory.

322

WARNING

•

This is not a collision avoidance sys-
tem. The driver is always responsible
and must intervene if the system does
not detect a vehicle ahead.

•

The function does not brake for
humans or animals, and not for small
vehicles such as bicycles and motorcy-
cles. Nor for low trailers, oncoming,
slow or stationary vehicles and objects.

•

Do not use the function in demanding
situations, such as in city traffic, at
junctions, on slippery surfaces, with a
lot of water or slush on the road, in
heavy rain/snow, in poor visibility, on
winding roads or on slip roads.

NOTE

This function uses the car's camera and
radar units, which have certain general lim-
itations.

Related information

•

Adaptive cruise control

*

 (p. 315)

•

Limitations for camera and radar unit
(p. 419)

Change between cruise control

and adaptive cruise control

*

62

 in

the centre display

When the normal cruise control (CC

63

) is

selected in the driver display, it is possible to
change to adaptive cruise control (ACC

64

) in

the centre display's function view.

Activate or deactivate the
function using this button in
the centre display's function
view.

•

GREEN button indication – adaptive
cruise control is deactivated and normal
cruise control is set in standby mode.

•

GREY button indication – normal cruise
control is deactivated and adaptive cruise
control is set in standby mode.

A symbol in the driver display shows which
cruise control is active:

Cruise control

(CC)

Adaptive cruise con-

trol (ACC)

A

A

A

WHITE symbol: Function active, GREY symbol: Standby

mode

Related information

•

Adaptive cruise control

*

 (p. 315)

•

Cruise control (p. 312)

62

This function can be either standard or optional, depending on market.

63

Cruise Control

64

Adaptive Cruise Control

DRIVER SUPPORT

}}

* Option/accessory.

323

Symbols and messages for

adaptive cruise control

*

65

A number of symbols and messages regar-
ding the adaptive cruise control (ACC

66

) can

be shown via the driver display and/or the
head-up display

*

.

65

This function can be either standard or optional, depending on market.

66

Adaptive Cruise Control

||

DRIVER SUPPORT

* Option/accessory.

324

Symbol

Message

Specification

The symbol is WHITE

The car is maintaining the stored speed.

Adaptive Cruise Contr.

Unavailable

The symbol is GREY

Adaptive cruise control is set to standby mode.

Adaptive Cruise Contr.

Service required

The symbol is GREY

The system does not function as it should. A workshop should be contacted - an
authorised Volvo workshop is recommended.

Windscreen sensor

Sensor blocked, see Owner's manual

Clean the windscreen in front of the camera and radar unit's detectors.

A text message can be cleared by briefly
pressing the 

 button, located in the centre

of the steering wheel's right-hand keypad.

If a message remains: Contact a workshop –
an authorised Volvo workshop is recom-
mended.

Related information

•

Adaptive cruise control

*

 (p. 315)

DRIVER SUPPORT

}}

* Option/accessory.

325

Pilot Assist

*

67

Pilot Assist can help the driver to drive the
car between the lane's side markings as well
as to maintain an even speed, combined with
a preselected time interval to the vehicle
ahead.

Get to know Pilot Assist

The camera and radar unit measures the distance to

the vehicle ahead and detects side markings.

Camera and radar unit

Distance readers

Readers, side markings

Pilot Assist helps to control your car and you
may need to drive a few kilometres with Pilot
Assist before you feel completely at home
with the function. It is important to know

about all of the function's applications and lim-
itations in order to safely use all of the advan-
tages.

The Pilot Assist function is primarily intended
for use on motorways and similar major roads
where it can contribute to more comfortable
driving and a more relaxed driving experience.

The driver selects the desired speed and a
time interval to the vehicle ahead. Pilot Assist
scans the distance to the vehicle ahead and
the lane's side markings on the road surface
using the camera unit. The preset time interval
is maintained with automatic speed adjust-
ment whilst the steering assistance helps to
position the car in the lane.

If the cornering support

*

 function is activated,

this may also affect the speed of the car.

Pilot Assist regulates the speed with accelera-
tion and braking. It is normal for the brakes to
emit a low sound when they are being used to
adjust the speed.

Pilot Assist strives to:

•

regulate the speed smoothly. In situations
that demand sudden braking the driver
must brake himself/herself. This applies in
cases of large speed differences or if the
car in front brakes suddenly. Due to the
limitations of the camera and radar unit,

braking may come unexpectedly or not at
all.

•

follow the vehicle ahead in the same lane
at a time interval set by the driver. If the
radar unit cannot see any vehicle in front
then the car will instead maintain the
speed set and stored by the driver. This
also takes place if the speed of the vehicle
ahead increases and exceeds the stored
speed.

Position of the car in the lane

When Pilot Assist helps to steer, it attempts to
place the car halfway between the visible lane
markings. For a smoother drive, it is a good
idea to allow the car to find a good position.
The driver can always adjust the position him/
herself by increasing the steering input. It is
important that the driver checks to make sure
the car is positioned safely in the lane.

If Pilot Assist does not position the car in an
appropriate way in the lane, it is recom-
mended to turn Pilot Assist off or switch to
adaptive cruise control

*

.

67

This function can be either standard or optional, depending on market.

||

DRIVER SUPPORT

326

Steering assistance

The current status of steering
assistance is indicated by the
colour of the steering wheel's
symbol:

• GREEN steering wheel indi-
cates active steering assis-

tance

• GREY steering wheel (as in illustration) indi-
cates deactivated steering assistance.

Pilot Assist steering assistance takes into
account the speed of the preceding car and
the lane markings. The driver can at any time
ignore the Pilot Assist steering recommenda-
tion and steer in another direction, e.g. to
change lane or avoid an obstruction on the
road.

If Pilot Assist cannot interpret the lane unam-
biguously, e.g. if the camera and radar unit
does not see the lane's side markings, Pilot
Assist temporarily deactivates steering assis-
tance, but resumes it if the lane can be inter-
preted again - although the speed and dis-
tance control functions remain active. The
steering wheel vibrates slightly when deacti-
vated temporarily in order to alert the driver to
the change.

WARNING

Pilot Assist steering assistance is automati-

cally deactivated and is resumed without

prior warning.

Round bends and when the road splits

Pilot Assist interacts with the driver, who
should therefore not wait for the steering
assistance from Pilot Assist but should always
be prepared to increase his/her own steering
input, especially in bends.

When the car approaches an exit or if the lane
splits, the driver should steer towards the
desired lane so that Pilot Assist can detect the
desired direction.

Hands on the steering wheel

In order for Pilot Assist to function, the driver’s
hands must be on the steering wheel. It is also
important for the driver always to carry on
being active and alert when driving as Pilot
Assist is unable to read all situations and the
function may toggle between off and on with-
out prior warning.

If Pilot Assist detects that the
driver does not keep his/her
hands on the steering wheel,
the system gives a warning
with a symbol and text mes-
sage in the driver display in
order to prompt the driver to

actively steer the car.

If the driver's hands still cannot be detected
on the steering wheel after a few seconds, the
prompt to actively steer the car is repeated,
supplemented by an acoustic signal.

If Pilot Assist cannot detect the driver's hands
on the steering wheel after a further few sec-
onds, the warning signal becomes intensive
and the steering function is deactivated. Pilot
Assist must then be restarted using the steer-
ing wheel button 

.

DRIVER SUPPORT

}}

* Option/accessory.

327

WARNING

•

The function is supplementary driver
support intended to facilitate driving
and make it safer – it cannot handle all
situations in all traffic, weather and
road conditions.

•

•

Driver support functions are not a sub-
stitute for the driver's attention and
judgement. The driver is always
responsible for ensuring the car is
driven in a safe manner, at the appro-
priate speed, with an appropriate dis-
tance to other vehicles, and in accord-
ance with current traffic rules and reg-
ulations.

IMPORTANT

Maintenance of driver support components
must only be performed at a workshop –
an authorised Volvo workshop is recom-
mended.

Related information

•

Driving support systems (p. 290)

•

Selecting and activating Pilot Assist

*

(p. 330)

•

Display mode for Pilot Assist

*

 (p. 328)

•

Limitations of Pilot Assist

*

 (p. 333)

•

Symbols and messages for Pilot Assist

*

(p. 336)

•

Controls for Pilot Assist

*

 (p. 327)

•

Warning from driver support in the event
of a collision risk (p. 340)

•

Change of target with driver support
(p. 341)

•

Set time interval to vehicle ahead (p. 343)

•

Set the stored speed for driver support
(p. 342)

•

Automatic braking with driver support
(p. 344)

•

Overtaking Assistance

*

 (p. 339)

Controls for Pilot Assist

*

68

A summary of how Pilot Assist is controlled
using the left-hand keypad on the steering
wheel and how the function is shown in the
display.

Buttons and symbols for the function.

▶

: Switches from adaptive cruise control

*

to Pilot Assist

: 

From standby mode

 - activates Pilot

Assist and stores the current speed

: 

From active mode

 - deactivates/

changes Pilot Assist to standby mode

: Activates Pilot Assist from standby

mode and resumes the stored speed and
time interval

: Increases the stored speed

68

This function can be either standard or optional, depending on market.

||

DRIVER SUPPORT

* Option/accessory.

328

: Reduces stored speed

Increases the time interval to vehicles
ahead
Reduces the time interval to vehicles
ahead

◀

: Switches from Pilot Assist to adaptive

cruise control
Function symbol

Symbols for target car

Symbol for time interval to vehicles ahead

Symbol for activated/deactivated steering
assistance

Related information

•

Pilot Assist

*

 (p. 325)

Display mode for Pilot Assist

*

69

The following image example shows how
Pilot Assist can be shown in the display in dif-
ferent contexts.

Speed

Indication of speeds.

Stored speed

Speed of vehicle ahead

Current speed of your car

Time interval

Pilot Assist only regulates the
time interval to the vehicle
ahead when the distance
symbol shows a vehicle (1)
above the steering wheel
symbol.

Pilot Assist steering assistance is only active
when the steering wheel symbol (2) has
changed from GREY to GREEN.

When driving

In the following illustrative example, the road
sign information (RSI

70

) function informs the

driver that the maximum permitted speed is
130 km/h (80 mph).

69

This function can come as either standard or an option depending on the market.

70

Road Sign Information

DRIVER SUPPORT

* Option/accessory.

329

The previous illustration shows that Pilot
Assist is set to maintain 110 km/h (68 mph)
and that there is no vehicle ahead to follow.

Pilot Assist provides no steering assistance
since the lane's side markings cannot be
detected.

The previous illustration shows that Pilot
Assist is set to maintain 110 km/h (68 mph)
and at the same time is following a vehicle
ahead which is keeping the same speed.

Pilot Assist provides no steering assistance
since the lane's side markings cannot be
detected.

The previous illustration shows that Pilot
Assist is set to maintain 110 km/h (68 mph)
and at the same time is following a vehicle
ahead which is keeping the same speed.

Here, Pilot Assist also provides steering assis-
tance since the lane's side markings can be
detected.

The previous illustration shows that Pilot
Assist is set to maintain 110 km/h (68 mph)
and that there is no vehicle ahead to follow.

Pilot Assist provides steering assistance as the
lane markings can be detected.

Related information

•

Pilot Assist

*

 (p. 325)

•

Limitations of Pilot Assist

*

 (p. 333)