Volvo S90 Recharge Plug-in Hybrid (2021 year). Manual in english - page 21

DRIVER SUPPORT

* Option/accessory.

362

Steering assistance at risk of

collision

The function 

Collision avoidance

 can help

the driver reduce the risk of the car leaving its
lane unintentionally and/or colliding with
another vehicle or obstacle by actively steer-
ing the car back into its lane and/or swerving.

The function consists of these subfunctions:

•

Steering assistance upon risk of run-off

•

Steering assistance upon risk of head-on
collision

•

Steering assistance upon risk of rear-end
collision

*

After automatic engagement, the driver dis-
play indicates that this has occurred via a text
message:

Collision avoidance

 

Automatic intervention

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.

NOTE

It is always the driver who decides how
much the car should steer – the car can
never take command.

Related information

•

Driving support systems (p. 286)

•

Activating or deactivating steering assis-
tance in the event of a collision risk
(p. 363)

•

Steering assistance upon risk of run-off
(p. 363)

•

Steering assistance upon risk of head-on
collision (p. 364)

•

Steering assistance upon risk of rear-end
collision

*

 (p. 365)

•

Limitations for steering assistance at risk
of collision (p. 366)

•

Symbols and messages for steering assis-
tance upon risk of collision (p. 367)

DRIVER SUPPORT

}}

* Option/accessory.

363

Activating or deactivating steering

assistance in the event of a

collision risk

The steering assistance function is optional –
the driver can choose to activate or deacti-
vate it.

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

•

GREEN button indication – the function is
activated.

•

GREY button indication – the function is
deactivated.

This function is activated automatically each
time the engine is started

97

.

NOTE

When the 

Collision avoidance

 function is

deactivated, all subfunctions are switched
off:

•

Steering assistance at risk of road
departure

•

Steering assistance at risk of oncom-
ing collision

•

Steering assistance at risk of rear-end
collision

*

Even though it is possible to deactivate the
function, it is advisable for the driver to
always have it activated since it improves
driving safety in most cases.

Related information

•

Steering assistance at risk of collision
(p. 362)

•

Limitations for steering assistance at risk
of collision (p. 366)

Steering assistance upon risk of

run-off

Steering assistance has a number of subfunc-
tions. Steering assistance in the event of run-
off risk can help the driver and reduce the risk
of the car accidentally leaving the road by
actively steering the car back onto the road.

The function has two activation levels on inter-
vention:

•

Steering assistance only

•

Steering assistance with brake interven-
tion

Steering assistance only

Intervention with steering assistance

97

In certain markets, the setting used when the engine is switched off is reactivated.

||

DRIVER SUPPORT

364

Steering assistance with brake intervention

Intervention with steering assistance and braking

Brake intervention helps in situations where
steering assistance alone is not sufficient. The
brake force is adapted automatically depend-
ing on the situation at the time of road run-off.

The function is active within the speed range
65-140 km/h (40-87 mph) on roads with
clearly visible lane markings/lines.

A camera scans the edges of the road and the
painted side markings. If the car is about to
leave the side of the road, the car is steered
back onto the road and if the steering inter-
vention is not enough to avoid run-off, the
brakes are also activated.

However, the function does 

not

 intervene with

either steering assistance or brake interven-
tion if the direction indicators are used. And if
the function detects that the driver is actively

driving the car, activation of the function will
be delayed.

Related information

•

Steering assistance at risk of collision
(p. 362)

•

Limitations for steering assistance at risk
of collision (p. 366)

Steering assistance upon risk of

head-on collision

Steering assistance has a number of subfunc-
tions. Steering assistance upon risk of head-
on collision can help a distracted driver who
does not notice that the car is heading into
the opposite lane.

The function can assist by guiding the car back to its

own lane.

Oncoming vehicles

Your car

At the same time as steering intervention is
activated, collision warning for driver support
is also activated. However, the brake pulse
included in the collision warning will not be
activated.

DRIVER SUPPORT

* Option/accessory.

365

The function is active within the speed range
60-140 km/h (37-87 mph) on roads with
clearly visible lane markings/lines.

If the car is about to leave its own lane while
an oncoming vehicle is approaching at the
same time, the function can help the driver to
steer the car back into its own lane.

However, the function does 

not

 intervene with

steering assistance if the direction indicator is
used. And if the function detects that the
driver is actively driving the car, activation of
the function will be delayed.

Related information

•

Steering assistance at risk of collision
(p. 362)

•

Warning from driver support in the event
of a collision risk (p. 336)

•

Limitations for steering assistance at risk
of collision (p. 366)

Steering assistance upon risk of

rear-end collision

*

Steering assistance has a number of subfunc-
tions. Steering assistance if there is a risk of
rear-end collision can help a distracted driver
who does not notice that the car is about to
leave its own lane while an oncoming vehicle
is approaching at the same time, either from
behind or in the blind spot.

The function can assist by steering the car back to its

own lane.

Other vehicle in the blind spot

Your car

If the car is about to leave its own lane while
another vehicle is in the blind spot, or another
vehicle is approaching rapidly in an adjacent
lane at the same time, the function can help

the driver to steer the car back into its own
lane.

The function can even assist if the driver inten-
tionally changes lanes using direction indica-
tors without noticing that another vehicle is
approaching.

The function is active within the speed range
60-140 km/h (37-87 mph) on roads with
clearly visible lane markings/lines.

The lamps in the door mirrors flash during
steering intervention, regardless of whether
the BLIS

98

 function is activated. An acoustic

signal can also be heard.

Related information

•

Steering assistance at risk of collision
(p. 362)

•

BLIS

*

 (p. 369)

•

Limitations for steering assistance at risk
of collision (p. 366)

98

Blind Spot Information

DRIVER SUPPORT

* Option/accessory.

366

Limitations for steering assistance

at risk of collision

In certain situations the function may have
limited functionality and fail to intervene in
the following cases, for example:

•

for small vehicles, such as motorcycles

•

if the majority of the car has steered into
the adjacent lane

•

on roads/in lanes with unclear or non-exis-
tent lane markings

•

outside the speed range 60-140 km/h
(37-87 mph)

•

as the steering servo for speed-dependent
steering wheel resistance is working at
reduced power – e.g. when cooling due to
overheating.

Other demanding situations can include:

•

road works

•

winter road conditions

•

narrow roads

•

poor road surface

•

a very “sporty” driving style

•

poor weather with reduced visibility.

In these demanding situations, the function
may have difficulty helping the driver correctly.
In such cases it is recommended to switch off
this function.

NOTE

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

Related information

•

Steering assistance at risk of collision
(p. 362)

•

Steering assistance upon risk of run-off
(p. 363)

•

Steering assistance upon risk of head-on
collision (p. 364)

•

Steering assistance upon risk of rear-end
collision

*

 (p. 365)

DRIVER SUPPORT

367

Symbols and messages for

steering assistance upon risk of

collision

A number of symbols and messages regar-
ding steering assistance may be shown in the
driver display. Here are some examples.

Symbol

Message

Specification

Collision avoidance

Automatic intervention

When the function is activated, a message is shown to the driver indicating that the
system has been activated.

Windscreen sensor

Sensor blocked, see Owner's manual

The ability of the camera to scan the roadway in front of the car is reduced.

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

•

Steering assistance at risk of collision
(p. 362)

•

Limitations for steering assistance at risk
of collision (p. 366)

DRIVER SUPPORT

* Option/accessory.

368

Rear Collision Warning

*

99

The Rear Collision Warning

100

 (RCW) func-

tion can help the driver to avoid being hit by a
vehicle approaching from behind.

Drivers in vehicles behind can be warned
about an imminent collision by the function
flashing intensively with the direction indica-
tors.

If, at a speed below 30 km/h (20 mph), the
function detects that the car is in danger of
being hit from behind, the seatbelt tensioners
may tension the front seatbelts. The Whiplash
Protection System is also activated in the
event of a collision.

Immediately before a collision from behind,
this function may also activate the foot brake
in order to reduce the forward acceleration of
the car during the collision. However, the foot
brake is only activated if the car is stationary.
The foot brake releases immediately if the
accelerator pedal is depressed.

This function is activated automatically each
time the engine is started.

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.

Related information

•

Driving support systems (p. 286)

•

Limitations of Rear Collision Warning

*

(p. 368)

•

Whiplash Protection System (p. 47)

Limitations of Rear Collision

Warning

*

101

In certain cases the Rear Collision Warning
(RCW) may have difficulty helping the driver
in the event of a collision risk.

This can, for example, be if:

•

the vehicle approaching from behind is
detected too late

•

the vehicle approaching from behind
changes lane at the last moment

•

a trailer, bicycle rack or similar is con-
nected to the car's electrical system - the
function is then deactivated automatically.

NOTE

In certain markets, RCW does 

not

 give a

warning with the direction indicators due
to local traffic regulations - in such cases,
this part of the function is deactivated.

NOTE

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

99

Rear collision warning.

100

The function is not available in all markets.

101

Rear collision warning.

DRIVER SUPPORT

}}

* Option/accessory.

369

Related information

•

Rear Collision Warning

*

 (p. 368)

•

Setting the warning distance for City
Safety (p. 351)

•

Limitations for camera and radar unit
(p. 415)

BLIS

*

The BLIS

102

 function is intended to help the

driver detect vehicles diagonally behind and
to the side of the car so as to provide assis-
tance in heavy traffic on roads with several
lanes in the same direction.

Location of BLIS lamp

BLIS is a driver aid intended to give a warning
of:

•

vehicles in the car's blind spot

•

quickly approaching vehicles in the left
and right lanes closest to the car.

Principle of BLIS

Zone in blind spot

Zone for quickly approaching vehicle

The system is designed to react when:

•

your car is overtaken by other vehicles

•

another vehicle is quickly approaching
your car.

When BLIS detects a vehicle in Zone 1 or a
quickly approaching vehicle in Zone 2, the
indicator lamp on the door mirror on the affec-
ted side illuminates with a constant glow. If
the driver activates the direction indicator on
the same side as the warning, the indicator
lamp will change over from a constant glow to
flashing with a more intense light.

102

Blind Spot Information

||

DRIVER SUPPORT

* Option/accessory.

370

BLIS is active when the driver's vehicle is trav-
elling at a speed above 10 km/h (6 mph).

If passing vehicles drive more than 15 km/h
(9 mph) faster than the driver's vehicle, BLIS
will not react.

NOTE

The lamp illuminates on the side of the car
where the system has detected the vehicle.
If the car is overtaken on both sides at the
same time then both lamps illuminate.

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.

Related information

•

Driving support systems (p. 286)

•

Activating or deactivating BLIS (p. 370)

•

Limitations of BLIS (p. 371)

•

Messages for BLIS (p. 372)

Activating or deactivating BLIS

The BLIS

103

 function can be activated or

deactivated.

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

•

GREEN button indication – the function is
activated.

•

GREY button indication – the function is
deactivated.

If BLIS is activated when starting the engine,
the function is confirmed by the door mirror
indicator lamps blinking once.

If BLIS was deactivated when the engine was
switched off, it will continue to be deactivated
when the engine is next started and no indica-
tor lights will then be illuminated.

Related information

•

BLIS

*

 (p. 369)

•

Limitations of BLIS (p. 371)

103

Blind Spot Information

DRIVER SUPPORT

* Option/accessory.

371

Limitations of BLIS

The BLIS

104

 function may have limitations in

certain situations.

Keep the surface indicated clean – on both the left
and right-hand sides of the car

105

.

Examples of limitations:

•

Dirt, ice and snow covering the sensors
may reduce the functions and deactivate
alerts.

•

The BLIS function is automatically deacti-
vated if a trailer, bicycle rack or similar is
connected to the car's electrical system.

•

For good performance of BLIS, there
should be no bicycle rack, luggage carrier
or similar mounted on the car's towbar.

WARNING

•

BLIS does not work on sharp bends.

•

BLIS does not work when the car is
reversing.

NOTE

This function uses the car's radar units,
which have certain general limitations.

Related information

•

BLIS

*

 (p. 369)

•

Limitations for camera and radar unit
(p. 415)

104

Blind Spot Information

105

NOTE: The illustration is schematic - details may vary depending on car model.

DRIVER SUPPORT

* Option/accessory.

372

Messages for BLIS

A number of messages regarding BLIS

106

 can

be shown in the driver display. Here are some
examples.

Message

Specification

Blind spot sensor

Service required

The system does not function as it should. A workshop should be contacted

A

.

Blind spot system off

Trailer attached

BLIS and CTA

B

 have been deactivated as a trailer has been connected to the car's electrical system.

A

An authorised Volvo workshop is recommended.

B

Cross Traffic Alert

*

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 persists, contact a workshop

A

.

Related information

•

BLIS

*

 (p. 369)

•

Cross Traffic Alert

*

 (p. 377)

106

Blind Spot Information

DRIVER SUPPORT

}}

* Option/accessory.

373

Driver Alert Control

The Driver Alert Control (DAC) function is
intended to help make the driver aware that
he or she is starting to drive less consistently,
e.g. if the driver becomes distracted or starts
to fall asleep.

The objective for the function is to detect
slowly deteriorating driving ability and it is pri-
marily intended for major roads. The function
is not intended for city traffic.

The function is activated when speed exceeds
65 km/h (40 mph) and remains active as long
as the speed is over 60 km/h (37 mph).

Driver Alert Control reads the position of the car in

the lane.

A camera detects the edge markings painted
on the carriageway and compares the align-
ment of the road with the driver’s steering
wheel movements.

The car is being driven erratically in the lane.

If driving behaviour becomes
noticeably inconsistent, the
driver is alerted by this sym-
bol in the driver display, com-
bined with an acoustic signal
and the text message 

Time

to take a break

.

If the car is equipped with Sensus Navigation

*

and has the function 

Rest Stop Guidance

activated, suggestions for an appropriate
place for a break are also displayed.

The warning is repeated after a time if driving
behaviour has not improved.

WARNING

Driver Alert Control should not be used to

extend a period of driving. The driver

should instead plan for breaks at regular

intervals and make sure they are well

rested.

WARNING

An alarm from Driver Alert Control should

be taken very seriously, as a sleepy driver is

often not aware of his/her own condition.
If the alarm sounds or you feel fatigued:

•

Stop the car safely as soon as possible
and rest.

Studies have shown that it is just as dan-

gerous to drive while tired as it is to drive

under the influence of alcohol or other

stimulants.

||

DRIVER SUPPORT

* Option/accessory.

374

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.

Related information

•

Driving support systems (p. 286)

•

Activating or deactivating Driver Alert
Control (p. 374)

•

Select rest stop guidance in the event of a
warning from Driver Alert Control (p. 374)

•

Limitations of Driver Alert Control
(p. 375)

Activating or deactivating Driver

Alert Control

The Driver Alert Control (DAC) function can
be activated or deactivated.

1. Tap on 

Settings

 in the centre display's

top view.

2. Select 

My Car

IntelliSafe

Driver

Alert

.

3. Select or deselect 

Alertness Warning

 to

activate or deactivate the function.

Related information

•

Driver Alert Control (p. 373)

•

Limitations of Driver Alert Control
(p. 375)

Select rest stop guidance in the

event of a warning from Driver

Alert Control

In cars equipped with Sensus Navigation

*

,

the driver can activate a guide that can auto-
matically suggest an appropriate rest area
when Driver Alert Control (DAC) issues a
warning.

It is possible to select whether the 

Rest Stop

Guidance

 function should be activated or

deactivated.

1. Tap on 

Settings

 in the centre display's

top view.

2. Select 

My Car

IntelliSafe

Driver

Alert

.

3. Select or deselect 

Rest Stop Guidance

to activate or deactivate the function.

Related information

•

Driver Alert Control (p. 373)

•

Limitations of Driver Alert Control
(p. 375)

DRIVER SUPPORT

}}

* Option/accessory.

375

Limitations of Driver Alert Control

The Driver Alert Control (DAC) function may
have limitations in certain situations.

In some cases the system may issue a warn-
ing despite driving ability not deteriorating, for
example:

•

in strong side winds

•

on rutted road surfaces.

WARNING

In some cases, driving behaviour is not

affected despite driver fatigue – e.g. when

using the Pilot Assist

*

 function – resulting

in the driver not getting a warning from

DAC.
It is therefore important to always stop and

take a break at the slightest feeling of fati-

gue, regardless of whether the function has

given a warning.

NOTE

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

Related information

•

Driver Alert Control (p. 373)

•

Limitations for camera and radar unit
(p. 415)

Distance Warning

*

107

The Distance Warning function can assist the
driver to notice that the time interval to the
vehicle ahead may be too short. This requires
the car to be equipped with a head-up dis-
play

*

 to be able to display Distance Warning.

Distance Warning symbol on the windscreen with

head-up display.

In cars equipped with head-up display, a sym-
bol is shown on the windscreen for as long as
the time interval to the vehicle ahead is shorter
than the preset value. However, this assumes
that the 

Show Driver Support

 function is

activated via the settings in the car's menu
system.

Distance warning is active at speeds
above 30 km/h (20 mph) and only reacts to

the vehicle ahead travelling in the same direc-
tion. No distance information is provided for
oncoming, slow or stationary vehicles.

NOTE

Strong sunlight, reflections, extreme light
contrasts, the use of sunglasses, or if the
driver is not looking straight ahead may
make the visual warning signal in the wind-
screen difficult to recognise.

NOTE

Distance warning is deactivated during the
time the adaptive cruise control

*

 or Pilot

Assist

*

 is active.

WARNING

Distance warning only reacts if the time

window to the vehicle ahead is shorter

than the preset value – the speed of the

driver's vehicle is not affected.

107

Distance Alert

||

DRIVER SUPPORT

* Option/accessory.

376

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.

Related information

•

Activating or deactivating distance warn-
ing (p. 376)

•

Limitations of Distance Warning (p. 376)

•

Set time interval to vehicle ahead (p. 339)

•

Warning from driver support in the event
of a collision risk (p. 336)

•

Head-up display

*

 (p. 140)

Activating or deactivating distance

warning

108

The distance warning function can be deacti-
vated. The function is only available in cars
that can show information on the windscreen
with a so-called head-up display

*

.

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

•

GREEN button indication – the function is
activated.

•

GREY button indication – the function is
deactivated.

Distance Warning is activated automatically
each time the engine is started.

Related information

•

Distance Warning

*

 (p. 375)

•

Limitations of Distance Warning (p. 376)

Limitations of Distance Warning

109

The distance warning function may have limi-
tations in certain situations. The function is
only available in cars that can show informa-
tion on the windscreen with a so-called head-
up display

*

.

WARNING

•

A vehicle's size may affect the ability to
be detected, e.g. motorcycles, which
could mean that the warning lamp illu-
minates at a shorter time window than
set or that the warning is temporarily
absent.

•

Extremely high speeds can cause the
lamp to illuminate at a shorter time
window than that set due to limitations
in radar unit range.

NOTE

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

Related information

•

Distance Warning

*

 (p. 375)

•

Limitations for camera and radar unit
(p. 415)

•

Head-up display

*

 (p. 140)

DRIVER SUPPORT

}}

* Option/accessory.

377

Cross Traffic Alert

*

110

Cross Traffic Alert (CTA) is a driver support
that supplements BLIS

111

 and is designed to

help the driver detect traffic crossing behind
the car when it is reversing.

The 

auto-brake

 subfunction can help the

driver to stop the car in the event of a risk of
collision with an unobserved vehicle.

Examples of areas where Cross Traffic Alert can

assist the driver to detect obstacles during reversing.

The function is primarily designed to detect
vehicles. In favourable conditions it may also
be able to detect smaller objects, such as
cyclists and pedestrians.

The function is only active if the car rolls back-
wards or if reverse gear has been selected.

If the function senses that something is
approaching from the side, this is indicated
with:

•

an acoustic signal - the sound is heard in
the left-hand or right-hand speaker
according to the direction from which the
object approaches.

•

an illuminated icon in the 

Park Assist

System

 graphic on the screen.

•

an icon on the Park assist camera top
view.

Illuminated icon for Cross Traffic Alert in the 

Park

Assist System

 graphic on the screen.

If the driver does not observe the warning
from the function and a collision is unavoida-
ble, the 

auto-brake

 function engages in order

to stop the car, after which the driver display
shows an explanatory text message on why
the car was braked.

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.

108

Distance Alert

109

Distance Alert

110

Cross traffic alert when the car is reversing.

111

Blind Spot Information