2020 VOLVO S90 TWIN ENGINE power steering

SEATS AND STEERING WHEEL
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* Option/accessory.191
Adjusting front seat side bolster settings*
Enhance comfort in the front seat by adjust- ing the sides of the backrest.
Multifunction control, located on the side of the seat cushion.
The side bolsters in the front seat backrests can be inflated/deflated to adjust the amountof support provided. The settings for the multi-functional seats can be adjusted using eitherthe mutifunction control on the seat or thecenter display. The adjustment settings areshown in the center display. To adjust the side bolsters:
1. Activate the multifunction control by turn-
ing it upward/downward
. The seat set-
tings view will appear in the center dis- play. 2.
Select
Side bolsters in the seat settings
view. Press the front part of the four-way but- ton to increase side bolster support
.
Press the rear part of the four-way but- ton to decrease side bolster support
.
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)
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 lumbar support
*
(p. 191)
Adjusting the passenger seat from thedriver's seat
* (p. 193)
Adjusting front seat lumbar support *
Use the control on the side of the seat cush- ion to adjust the lumbar support.
Multifunction control, in vehicles with four-way lum- bar support *.
Control in vehicles with two-way lumbar support *.

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SEATS AND STEERING WHEEL
* Option/accessory.
192 Lumbar support is adjusted using the multi- function control in vehicles with four-way lum- bar support
*, or the round button in vehicles
with two-way lumbar support *. The control is
located on the side of the seat cushion. Depending on the selected equipment level,the lumbar support can be adjusted forward/rearward and up/down (four-way lumbar sup-port) or forward/backward (two-way lumbarsupport).
Adjusting lumbar support in vehicles
with four-way lumbar support
1. Activate the multifunction control by turn-
ing the control
upward/downward. The
seat settings view will appear in the center display. 2.
Select
Lumbar in the seat settings view.
Press the round button up
/down to move the lumbar support upward/ downward.
Press the front part
of the button to
increase lumbar support.
Press the rear part
of the button to
decrease lumbar support.
Adjusting lumbar support in vehicles with two-way lumbar support
1. Press the front part of the round button
to increase lumbar support.
2. Press the rear part
of the round button
to decrease lumbar support.
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)
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 the passenger seat from thedriver's seat
* (p. 193)

SEATS AND STEERING WHEEL
* Option/accessory.193
Adjusting the passenger seat from the driver's seat *
The front passenger seat can be adjusted from the driver's seat.
Activating the functionThe function is activated via the function view in the center display:
Tap the
Adjust Passenger
Seat button to activate.
Adjust passenger seatThe driver must adjust the passenger seat within 10 seconds of activating the function. Ifno adjustment is made within this time, thefunction will be deactivated. The driver adjusts the passenger seat using the controls on the driver's seat:
Move the passenger seat forward/rear- ward by moving the control forward/rear-ward.
Change the backrest tilt of the passenger seat by moving the control forward/back-ward.
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)
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)

SEATS AND STEERING WHEEL
* Option/accessory.195
Adjusting the steering wheel The steering wheel can be adjusted to various positions.
The steering wheel's reach and height can be adjusted.
WARNING
Adjust the steering wheel and ensure it locks into position before driving. Neveradjust the steering wheel while driving.
Steering wheel force can be adjusted with speed-dependent power steering. Steeringwheel force is adjusted according to the vehi-cle's speed to give the driver an enhancedsense of control and stability.
Steering wheel adjuster lever.
1. Move the lever forward to release the steering wheel.
2. Adjust the steering wheel to the desired position.
3. Pull the lever back to lock the steering wheel into place. If the lever is difficult to move, press the steering wheel lightlywhile pulling the lever.
Related information
Steering wheel controls and horn (p. 194)
Adjusting the power
* front seats (p. 185)

CLIMATE CONTROL
* Option/accessory.211
displayed. The screen locks automatically after a period of inactivity.
Related information

Climate (p. 198)
Activating and deactivating power front seats
* (p. 211)
Activating and deactivating the heatedrear seats
* (p. 212)
Activating and deactivating front seat ven-tilation
* (p. 213)
Activating and deactivating the ventilatedrear seats
* (p. 213)
Activating and deactivating the heatedsteering wheel
* (p. 214)
Activating auto climate control (p. 215)
Activating and deactivating recirculation (p. 216)
Activating and deactivating max defroster(p. 217)
Activating and deactivating the heatedrear window and door mirrors (p. 218)
Setting the blower speed for the frontseats (p. 219)
Setting the blower speed for the rearseats (p. 219)
Synchronize temperature (p. 223)
Activating and deactivating air condition-ing (p. 223)
Activating and deactivating power front seats
*
The seats can be heated for added comfort for the driver and passengers in cold weather.
1. Tap the left- or right-side steering wheel and seat button in the center display's cli- mate bar to open the controls for steeringwheel and seat heating. If the vehicle is not equipped with ventila- ted seats or heated steering wheel (for thedriver's side), the button for seat heating isdirectly accessible in the climate bar.
2. Tap the seat heating button repeatedly to
select one of the four levels: Off, High,Medium or Low.
> The level is changed and the set level is displayed in the button.
Related information
Climate system controls (p. 209)
Activating and deactivating the heated front seat
* (p. 211)
Activating and deactivating the heated front seat *
The seats can be heated for added comfort for the driver and passengers in cold weather.
Seat heating can be set to automatically acti- vate when the engine is started. When set toautomatically activate, heating will be turnedon at low ambient temperatures. 1. Tap
Settings in the Top view in the center
display.
2. Tap
Climate.
3. Select
Auto Driver Seat Heating Leveland Auto Passenger Seat Heating Levelto activate/deactivate automatic start of heated driver's and passenger seat.
> An "A" will be displayed next to the rel-
evant seat heating button in the climate bar when auto start has been activated.
4. Select
Low, Medium or High to select
level after the function has been activated.
Related information
Climate system controls (p. 209)
Activating and deactivating power front seats
* (p. 211)

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
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* 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.

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DRIVER SUPPORT
* Option/accessory.
294
tively, they may be detected incorrectly as lane markings, with a subsequentrisk of contact between the vehicle andsuch obstacles. The driver is responsi-ble for ensuring that the vehicle main-tains a suitable distance from suchobstacles.
The camera and radar sensors do nothave the capacity to detect all oncom-ing objects and obstacles in trafficenvironments, e.g. potholes, stationaryobstacles or objects that completely orpartially block the route.
Pilot Assist does not "see" pedestrians,animals, etc.
The recommended steering input islimited in force, which means that itcannot always help the driver to steerand keep the vehicle within the lane.
In vehicles equipped with Sensus Navigation
*, the function is able to use
information from map data, which could cause variations in performance.
Pilot Assist will be switched off if thespeed-dependent power steeringwheel resistance is working at reducedpower, e.g. during cooling due to over-heating.WARNING
Pilot Assist should only be used if there are clear lane lines painted on each side of thelane. All other use will increase the risk ofcontact with nearby obstacles that cannotbe detected by the functions.
WARNING
This is not a collision avoidance sys- tem. The driver is always responsibleand must intervene if the system failsto detect a vehicle ahead.
The function does not brake for peopleor animals and does not brake for smallvehicles, such as bikes and motorcy-cles. Similarly, it does not brake for lowtrailers, oncoming, slow-moving or sta-tionary vehicles and objects.
Do not use the function in demandingsituations, such as in city traffic, atintersections, on slippery surfaces,with a lot of water or slush on the road,in heavy rain/snow, in poor visibility, onwinding roads, or on on/off ramps.
The driver can always correct or adjust steer-ing assistance provided by Pilot Assist by turn-ing the steering wheel to the desired position.
Steep roads and/or heavy loadsPilot Assist is primarily intended to be drivenon flat roads. The function may not be able tomaintain the correct time interval to the vehi-cle ahead when driving down steep hills. Thedriver should be extra attentive and preparedto apply the brakes.
Other limitationsThe Off Road drive mode cannot be selected
when Pilot Assist is activated.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
Pilot Assist
* (p. 287)
Camera/radar sensor limitations (p. 309)
Speed-dependent steering wheel resis- tance (p. 268)
Drive modes (p. 419)
41
Depending on market, this function can be either standard or optional.