2020 VOLVO S90 TWIN ENGINE brake

LIGHTING
158
Brake lights
The brake lights are automatically illuminated when braking.
The brake lights are illuminated when the brake pedal is depressed and when the brakesare automatically applied by a driver supportsystem.
Related information
Emergency brake lights (p. 158)
Brake functions (p. 403)
Driver support systems (p. 268)
Emergency brake lights
The emergency brake lights are activated to warn following vehicles of hard braking. This function causes an additional taillight on each side of the vehicle to illuminate.
The emergency brake lights are activated in the event of hard braking or if the ABS systemis activated and the vehicle is traveling at ahigh speed. After the driver decelerates to a low speed and then releases the brake, the brake lightsresume their normal brightness.
Related information
Brake lights (p. 158)
Brakes (p. 403)
Hazard warning flashers (p. 158)
Hazard warning flashers
Hazard warning flashers warn other road users by all of the vehicle's turn signals beingactivated at the same time. The function canbe used to warn about a traffic hazard.
Hazard warning flashers button.
Press the button to activate the hazard warn- ing flashers.
NOTE
Regulations concerning the use of hazard warning flashers may vary from country tocountry.
Related information
Emergency brake lights (p. 158)
Using turn signals (p. 156)

SEATS AND STEERING WHEEL
* Option/accessory.
184
Manual front seats
The front seats can be adjusted in a number of different ways to help enhance your seat-ing comfort.
Raise/lower the front edge of the seat cushion * by moving the control up/down. 1
Change the length of the seat cushion
* by
pulling up the lever and moving the cush- ion forward/backward.
Move the seat forward/backing by lifting the handle and moving the seat to a suita-ble distance from the steering wheel andpedals. Check to make sure the seat issecurely locked into place after its settinghas been changed.
Adjust lumbar support by pressing the button up/down/forward/rearward 2
.
Raise/lower the seat by moving the con- trol up/down.
Change the backrest tilt by turning the knob on the backrest.
WARNING
Do not adjust the seat while driving. The seat should be adjusted so that thebrake pedal can be depressed fully. Inaddition, position the seat as far rear-ward as comfort and control allow.
Check that the seat is securely lockedinto position after adjusting.
Related information

Power
* front seats (p. 185)
Adjusting the power
* front seats (p. 185)
Storing positions for seats, mirrors and head-up display
* (p. 186)
Using stored positions for seats, mirrorsand head-up display
* (p. 187)
Adjusting front seat massage settings
*
(p. 189)
Adjusting
* front seat cushion length
(p. 190)
Front seat massage
* settings (p. 188)
Adjusting front seat side bolster settings
*
(p. 191)
Adjusting front seat lumbar support
*
(p. 191)
Adjusting the passenger seat from thedriver's seat
* (p. 193)
1
Only applies to the driver's seat.
2 Applies for four-way lumbar support *. Two-way lumbar support * is adjusted forward/rearward.

||
SEATS AND STEERING WHEEL
* Option/accessory.
188
Front door closed
–Press and hold one of the memory buttons 1 (
) or 2 () until the seat, door mirrors
and head-up display stop in the positions stored in that memory button.
If the memory button is released, the seat,door mirrors and head-up display will stopmoving.
WARNING
This list point needs to be translated exactly to: "Because the driver's seatcan be adjusted with the ignition off,children should never be left unatten-ded in the vehicle.
Movement of the seat can be STOP-PED at any time by pressing any but-ton on the power seat control panel.
Do not adjust the seat while driving.
The seat should be adjusted so that thebrake pedal can be depressed fully. Inaddition, position the seat as far rear-ward as comfort and control allow.
The seat rails on the floor must not beobstructed in any way when the seat isin motion.
Related information
Manual front seats (p. 184)
Power
* front seats (p. 185)
Adjusting the power
* front seats (p. 185)
Storing positions for seats, mirrors and head-up display
* (p. 186)
Adjusting front seat massage settings
*
(p. 189)
Adjusting
* front seat cushion length
(p. 190)
Front seat massage
* settings (p. 188)
Adjusting front seat side bolster settings
*
(p. 191)
Adjusting front seat lumbar support
*
(p. 191)
Adjusting the passenger seat from thedriver's seat
* (p. 193)
Adjusting the door mirrors (p. 171)
Head-up display settings
* (p. 141)
Front seat massage * settings
The settings for the multifunctional seats can be adjusted using either the mutifunctioncontrol on the side of the seat or the centerdisplay. The adjustment settings are shown inthe center display.
Multifunction control, located on the side of the seat cushion.
Massage settingsThe following massage settings are available:

On/Off: Select On/Off to turn on/off the
massage function.

Programs 1-5: There are 5 preset mas-
sage programs. Select Swell, Tread,Advanced, Lumbar or Shoulder.

Intensity: Select Low, Normal or High.

Speed: Select Slow, Normal or Fast.

DRIVER SUPPORT
* Option/accessory.
268
Driver support systems
The vehicle is equipped with a number of driver support systems that can provide thedriver with active or passive assistance in var-ious situations.
The systems can, for example, help the driver:
maintain a set speed
maintain a set time interval to the vehicle ahead
help prevent a collision by warning thedriver and applying the brakes
park the vehicle.
Some of the systems are standard and othersare options. This also varies from market tomarket.
Related information
IntelliSafe – driver support and safety(p. 29)
Speed-dependent steering wheel resis-tance (p. 268)
Curve Speed Assist (CSA)
* (p. 302)
Electronic Stability Control (p. 269)
Distance Alert
* (p. 273)
Cruise control (p. 275)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)
Radar sensor (p. 305)
Camera (p. 308)
City Safety
™ (p. 314)
Rear Collision Warning
* (p. 328)
BLIS
* (p. 329)
Cross Traffic Alert
* (p. 333)
Road Sign Information
* (p. 337)
Driver Alert Control (p. 342)
Lane Keeping Aid (p. 344)
Steering assistance at risk of collision(p. 351)
Park Assist
* (p. 357)
Park Assist Camera
* (p. 362)
Park Assist Pilot
* (p. 370)
Speed-dependent steering wheel resistance Speed-dependent power steering increases the steering wheel resistance in pace withthe vehicle's speed, which can help give thedriver an enhanced feeling of control and sta-bility.
Steering is stiffer on highways. When parking and at low speeds, it will be easier to movethe steering wheel.
NOTE
In rare situations, the power steering may become too hot andrequire temporary cooling – dur-ing such time the power steering
will work at reduced output and the steer-ing wheel may feel more difficult to move. The message
Power steering Assistance
temporarily reduced will be displayed
along with this symbol in the instrument panel.
While the power steering is working at reduced power, the driver support func-tions and systems with steering assistanceare not available.

DRIVER SUPPORT
}}
* Option/accessory.269
WARNING
If the temperature rises too high, the power steering may be forced to switch off com-pletely. In such a situation, the driver dis- play shows the message
Power steering
failure Stop safely along with a symbol.
Changing the level of steering wheel resistance *
In INDIVIDUAL drive mode, the level of steer- ing wheel resistance can be adjusted. 1.
Tap
Settings in the center display's Top
view.
2. Select
My CarDrive ModesSteering Force.
Steering wheel resistance settings can only be accessed if the vehicle is stationary or is mov-ing straight ahead at a low speed.
Related information
Driver support systems (p. 268)
Drive modes (p. 419)
Electronic Stability Control
The Electronic Stability Control (ESC 1
) func-
tion helps the driver avoid skidding and improves the vehicle's directional stability.
This symbol will be displayed in the instrument panel whenthe system is intervening. When the system has inter- vened to apply the brakes, apulsing sound may be heard
and the vehicle may accelerate more slowlythan expected when the accelerator pedal isdepressed.
The system consists of the following sub-func- tions:
Stability control 2
Spin control and active yaw control
Engine drag control
WARNING
The function is supplementary driver support intended to facilitate drivingand help make it safer – it cannot han-dle all situations in all traffic, weatherand road conditions.
The driver is advised to read all sec-tions in the Owner's Manual about thisfunction to learn of its limitations,which the driver must be aware ofbefore using the function.
Driver support functions are not a sub-stitute for the driver's attention andjudgment. The driver is always respon-sible for ensuring the vehicle is drivenin a safe manner, at the appropriatespeed, with an appropriate distance toother vehicles, and in accordance withcurrent traffic rules and regulations.
Stability control 2This function helps control the driving andbraking force of each individual wheel in anattempt to stabilize the vehicle.
Spin control and active yaw controlThis function is active at low speeds andbrakes the wheels that are spinning to transfer
1
Electronic Stability Control
2 Also called traction control.

DRIVER SUPPORT
272
Electronic Stability Control symbols and messagesA number of symbols and messages related to Electronic Stability Control (ESC 6
) may be displayed in the instrument panel. Several examples are provided below.
Symbol Message Meaning
Steady glow for approx. 2 seconds. System check when the engine is started.
Flashing light. The system is actively operating.
Steady glow. Sport mode is activated.
NOTE! The system is not deactivated in this mode, but has partially
reduced functionality.
ESC Temporarily offThe system's functionality has been temporarily reduced due to high brake system temperatures. The function will be automatically reactivated when the brakes have cooled.
ESC Service requiredThe system is not functioning properly. Stop the vehicle in a safe place, turn off the engine and then restart it.
A text message can be erased by briefly press- ing the
button in the center of the right-
side steering wheel keypad. If the message persists: Contact a workshop
‒
an authorized Volvo workshop is recom- mended.
Related information
Electronic Stability Control (p. 269)
6
Electronic Stability Control

DRIVER SUPPORT
}}
* Option/accessory.275
Cruise control
Cruise Control (CC 10
) can help the driver
maintain an even speed to provide a more relaxing driving experience on highways andlong, straight roads with even traffic flows.
Overview
Function buttons and symbols.
: Activates Cruise Control from
standby mode and resumes the set speed
: Increases the set speed
: From standby mode – activates
Cruise Control and sets the current speed
: From active mode – deactivates/
puts Cruise Control in standby mode
: Reduces the set speed
Marker for set speed
The vehicle's current speed
Set speed
NOTE
In vehicles equipped with Adaptive Cruise Control *(ACC 11
), it is possible to switch
between Cruise Control and Adaptive Cruise Control.
WARNING
The function is supplementary driver support intended to facilitate drivingand help make it safer – it cannot han-dle all situations in all traffic, weatherand road conditions.
The driver is advised to read all sec-tions in the Owner's Manual about thisfunction to learn of its limitations,which the driver must be aware ofbefore using the function.
Driver support functions are not a sub-stitute for the driver's attention andjudgment. The driver is always respon-sible for ensuring the vehicle is drivenin a safe manner, at the appropriatespeed, with an appropriate distance toother vehicles, and in accordance withcurrent traffic rules and regulations.
Using engine braking instead of applying the brakes
Cruise Control regulates speed by lightly applying the brakes. On downgrades, it cansometimes be desirable to roll a bit faster andlet speed be reduced instead by engine brak-ing alone. The driver can temporarily disen-gage the Cruise Control braking function.
10
Cruise Control
11 Adaptive Cruise Control

||
DRIVER SUPPORT
* Option/accessory.
276 To disengage CC:
–Press the accelerator pedal about halfway down and then release it.
> Cruise Control will automatically disen-
gage the automatic brake function and speed will only be reduced using theengine braking function.
Related information
Driver support systems (p. 268)
Selecting and activating cruise control(p. 276)
Deactivating cruise control (p. 277)
Cruise control standby mode (p. 277)
Adjusting set speed for driver support(p. 298)
Switching between cruise control and Adaptive Cruise Control
* in the center dis-
play (p. 284)
Selecting and activating cruise control The Cruise Control (CC 12
) function must be
selected and activated in order to regulate speed.
In order to start Cruise Control from standby mode, the vehicle's current speed must be30 km/h (20 mph) or higher.
1. Press the ◀ (1) or ▶ (3) button on the
steering wheel keypad and scroll to the cruise control symbol
(4).
> Gray symbol – cruise control is in standby mode. 2.
When cruise control is selected, press
(2) on the steering wheel keypad to acti- vate.
> White symbol – cruise control starts
and the current speed is stored as the maximum speed. The lowest speedthat can be set is 30 km/h (20 mph).
Reactivating cruise control to the last stored speed
–When cruise control is selected, press on the steering wheel keypad to activate.
> The Cruise Control marking in theinstrument panel will change from GRAY to WHITE and the vehicle willthen return to the most recently setspeed.
WARNING
A noticeable increase in speed may follow when the speed is resumed with the
steering wheel button.
Related information
Cruise control (p. 275)
Deactivating cruise control (p. 277)
Cruise control standby mode (p. 277)
12
Cruise Control