2018 VOLVO XC90 brake

SEATS AND STEERING WHEEL
* Option/accessory.191
Using stored memory in a poweredfront seat
The memory function can be used to store the settings for the seat, door mirrors and head-up display *.
Using a stored positionA stored position can be used with the front door open or closed:
Front door open
–Briefly press one of the memory buttons (1 -3 ). The seat, door mirrors and head-up
display will move and stop at the positions stored in that button.
Front door closed
–Press and hold one of the memory buttons ( 1 -3 ) 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, doormirrors and head-up display will stop moving.
WARNING
• Because the front seats can be adjusted with the ignition off, children should neverbe left unattended in the vehicle.
• Movement of the seat can be STOPPEDat any time by pressing any button on thepower 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 rearwardas comfort and control allow.
• The seat rails on the floor must not beobstructed in any way when the seat is inmotion.
Related information
• Manual front seats (p. 188)
• Power front seats
* (p. 189)
• Adjusting the power front seats
* (p. 189)
• Storing memory settings in power front seats
* (p. 190)
• Adjusting front seat massage settings
*
(p. 192)
• Adjusting front seat cushion length (p. 193)
• Front seat massage settings
* (p. 192)
• Adjusting front seat side bolster settings
*
(p. 194) •
Adjusting front seat lumbar support
* (p. 194)
• Adjusting the passenger seat from the driv-er's seat
* (p. 195)

SEATS AND STEERING WHEEL
* Option/accessory.
196 •
Adjusting front seat side bolster settings
*
(p. 194)
• Adjusting front seat lumbar support
* (p. 194)
Folding the second row backrests
The second row of seats has three individual seating positions. The backrests can be foldeddown separately.
WARNING
• Adjust the seat and ensure it locks into position before driving. Use caution whenadjusting the seat. Uncontrolled or care-less adjustments could lead to injury.
• Long objects must always be securelytied down to help prevent injury or dam-age in the event of sudden braking.
• Always turn off the engine and apply theparking brake when loading or unloadingthe vehicle.
• Put the gear selector in
P to help prevent
the gear selector from being inadvertentlymoved.
CAUTION
When the backrest is folded down, make sure there are no objects in the rear seat, and theseat belts are not buckled. Otherwise there isa risk of damage to the upholstery.
CAUTION
The seat cushion of the integrated child restraint * must be in the stowed position
before the center seat backrest can be folded down. The armrest * in the center seat must be
raised before the seat backrest is folded down. If the vehicle has private locking *, the ski
hatch must be closed before the seat back- rest is folded down.
NOTE
The front seats may need to be pushed for- ward and/or the backrest adjusted so that therear seat backrests can be fully lowered. The rear seats may also need to be moved rearward. The seats in the second row must be in the upright position before they can be foldeddown completely. They should not be foldeddown when they are tilted forward to accessthe third row of seats.

||
SEATS AND STEERING WHEEL
* Option/accessory.
200
WARNING
• Adjust the seat and ensure it locks into position before driving. Use caution whenadjusting the seat. Uncontrolled or care-less adjustments could lead to injury.
• Long objects must always be securelytied down to help prevent injury or dam-age in the event of sudden braking.
• Always turn off the engine and apply theparking brake when loading or unloadingthe vehicle.
• Put the gear selector in
P to help prevent
the gear selector from being inadvertentlymoved.
Related information
• Folding the second row backrests (p. 196)
• Adjusting the second row head restraints(p. 198)
• Adjusting the second row backrest tilt(p. 200)
• Getting into and out of the third row of seats
* (p. 201)
• Folding the third row backrests
* (p. 202)
Adjusting the second row backresttilt
Backrest tilt can be adjusted separately for each seat in the second row.
Center seat
1. Pull the strap on the right side of the center seat.
2. Adjust backrest tilt forward/backward by decreasing/increasing pressure on the back- rest.
3. Release the strap to lock the backrest in its new position and press on the backrest untilthe lock engages.
Check to make sure the seat is securely lockedinto place after its position has been changed.
Outboard seats
1. Pull the handle on the side of the seat upward.
2. Adjust backrest tilt forward/backward by decreasing/increasing pressure on the back- rest.
3. Release the handle to lock the backrest in its new position and press on the backrest untilthe lock engages.
Check to make sure the seat is securely lockedinto place after its position has been changed.

SEATS AND STEERING WHEEL
* Option/accessory.201
WARNING
•Adjust the seat and ensure it locks into position before driving. Use caution whenadjusting the seat. Uncontrolled or care-less adjustments could lead to injury.
• Long objects must always be securelytied down to help prevent injury or dam-age in the event of sudden braking.
• Always turn off the engine and apply theparking brake when loading or unloadingthe vehicle.
• Put the gear selector in
P to help prevent
the gear selector from being inadvertentlymoved.
Related information
• Folding the second row backrests (p. 196)
• Adjusting the second row head restraints(p. 198)
• Moving the second row seats forward/rear- ward
* (p. 199)
• Getting into and out of the third row ofseats
* (p. 201)
• Folding the third row backrests
* (p. 202)
Getting into and out of the third row
of seats *
The second row of seats can be adjusted for easier access to the third row of seats *.
To fold down the backrest:
1. Pull the handle on the upper side of the right
or left outboard second row seat upward/ forward.
2. Fold the backrest down and move the entire seat forward.
To return the seat to the upright position:
–Push the seat rearward to its end position. The backrest should then easily return to thecorrect position.
NOTE
If a backrest in the second row of seats does not lock back into the upright position afterbeing folded down (e.g. for getting in or out ofthe third row of seats), it may need to bepushed forward again and then pushed backwith more force.
WARNING
Make sure that the rear seat backrest and head restraint are locked securely in placeafter the seat is folded up. The head restraints at the outer seats must always be raised when there is a passenger inone of these spots of the rear seat.
Related information
• Folding the second row backrests (p. 196)
• Adjusting the second row head restraints (p. 198)
• Moving the second row seats forward/rear- ward
* (p. 199)
• Adjusting the second row backrest tilt (p. 200)
• Folding the third row backrests
* (p. 202)

DRIVER SUPPORT
* Option/accessory.
270
Driver support systems
The vehicle is equipped with a number of driver support systems that can provide the driver withactive or passive assistance in various situations.
The system can, for example, help the driver maintain a set speed or a set time interval to thevehicle ahead, help prevent a collision by warningthe driver and applying the brakes, or assist thedriver while parking. Some of the systems are standard and others are options. This also varies from market to market.
Related information
• Speed-dependent steering wheel resistance(p. 270)
• Electronic Stability Control (p. 272)
• Stability system Roll Stability Control(p. 271)
• Rear Collision Warning (p. 345)
• Speed limiter (p. 276)
• Cruise control (p. 284)
• Distance Alert
* (p. 289)
• Adaptive Cruise Control
* (p. 293)
• Pilot Assist (p. 309)
• Radar sensor (p. 324)
• Camera (p. 329)
• City Safety
™ (p. 333)
• BLIS
* (p. 346) •
Cross Traffic Alert
* (p. 351)
• Road Sign Information
* (p. 355)
• Driver Alert Control (p. 360)
• Lane Keeping Aid (p. 362)
• Steering assistance at risk of collision(p. 370)
• Park Assist
* (p. 379)
• Park Assist Camera
* (p. 384)
• Park Assist Pilot
* (p. 393)
Speed-dependent steering wheelresistance
Speed-dependent power steering increases the steering wheel resistance in pace with the vehi-cle's speed to give the driver an enhanced feel-ing of control and stability.
Steering may feel stiffer on highways. When parking and at low speeds, it will be easier tomove the steering wheel.
NOTE
In some situations, the power steering may become too hot and require temporary cool-ing – during such time the power steering willwork at reduced output and the steeringwheel may feel more difficult to move. In parallel with the temporarily reduced steer- ing assistance, the driver display shows amessage as well as a STEERING WHEELsymbol.

DRIVER SUPPORT
* Option/accessory.271
WARNING
While the power steering is working at reduced power, the driver support functionswith steering assistance are not available. In such a situation, the driver display shows the
Power steering failure or Power
Steering Assist Temporarily Reduced
message, combined with a STEERING WHEEL symbol.
Changing the level of steering wheel resistance *
To change the level of steering wheel resistance, see the description of the INDIVIDUAL optionunder "Available drive modes" in the "Drivemodes" section. On models not equipped with drive mode con- trols and the INDIVIDUAL option, steering wheelresistance can instead be set in the center dis-play's Top view under:
SettingsMy CarDrive ModesSteering force
Steering wheel resistance settings cannot be accessed when turning at speeds above10 km/h (6 mph).
Related information
•Drive modes
* (p. 423)
• Pilot Assist (p. 309) •
Lane Keeping Aid (p. 362)
• Steering assistance at risk of collision(p. 370)
• Park Assist Pilot
* (p. 393)
Stability system Roll StabilityControl
The Roll Stability Control (RSC 1
) system helps
minimize the risk of a rollover in the event of e.g. a sudden evasive maneuver or if the vehiclebegins to skid.
The RSC system monitors the lateral angle at which the vehicle is leaning and registers anychanges. Using this information, the system cal-culates the likelihood of a rollover. If there is animminent risk of a rollover, Electronic StabilityControl is activated, engine torque is reduced andbrakes are applied to one or more of the wheelsuntil the vehicle has regained stability.
WARNING
The vehicle

DRIVER SUPPORT
* Option/accessory.
272
Electronic Stability Control
The Electronic Stability Control (ESC 2
) function
helps the driver avoid skidding and improves the vehicle's directional stability.
This symbol will be displayed in the instrument panel when theESC system is intervening. When the ESC has intervened to apply the brakes, a pulsingsound may be heard and the
vehicle may accelerate more slowly than expec-ted when the accelerator pedal is depressed.
The ESC system consists of the following sub- functions: • Stability control 3
• Spin control and active yaw control
• Engine drag control
• Trailer Stability Assist
WARNING
•The Electronic Stability Control system ESC is supplementary driver supportintended to facilitate driving and make itsafer – it cannot handle all situations inall traffic, weather and road conditions.
• ESC is not a substitute for the driver'sattention and judgment. The driver isalways responsible for ensuring the vehi-cle is driven in a safe manner, at theappropriate speed, with an appropriatedistance to other vehicles, and in accord-ance with current traffic rules and regula-tions.
Stability control 3This function helps control the driving and brak-ing force of each individual wheel in an attemptto stabilize the vehicle.
Spin control and active yaw controlThis function is active at low speeds and brakesthe wheels that are spinning to transfer additionalpower from wheels that are not spinning. This function also helps prevent the wheels from spinning while the vehicle is accelerating.
Engine drag control
Engine drag control (EDC
4
) helps prevent inad-
vertent wheel lock, e.g. after downshifting orusing engine braking when driving at low speedson a slippery surface. Inadvertent wheel lock while driving could impair the driver's ability to steer the vehicle.
Trailer Stability Assist *5
Trailer Stability Assist (TSA
6
) is designed to help
stabilize a vehicle that is towing a trailer if thevehicle and trailer have begun to sway. For moreinformation, see "Trailer Stability Assist".
NOTE
The TSA function is deactivated if ESC Sport
Mode is activated.
Related information
• Electronic Stability Control Sport mode (p. 273)
• Activating/deactivating Sport mode in Elec-tronic Stability Control (p. 273)
1
Roll Stability Control
2 Electronic Stability Control
3 Also called traction control.
4 Engine Drag Control
5Trailer Stability Assist is included if the vehicle is equipped with a Volvo original towbar.6
Trailer Stability Assist

DRIVER SUPPORT
275
Electronic Stability Control symbolsand messages
A number of symbols and messages related to Electronic Stability Control (ESC) may be dis-played in the instrument panel.
Some examples of symbols and messages are shown in the table below.
SymbolMessageMeaning
Steady glow for approx. 2 seconds. System check when the engine is started.
Flashing light. The ESC is actively operating.
Steady glow. Sport mode is activated.
Note: The ESC system is not deactivated in this mode, but has partially reduced functionality.
ESC Temporarily offThe ESC system's functionality has been temporarily reduced due to high brake system temperatures. The function will be automatically reactivated when the brakes have cooled. See the message in the instrument panel.
ESC Service requiredThe ESC system is not functioning properly.
• Stop the vehicle in a safe place, turn off the engine and then restart it.
• Consult a workshop if the message persists
‒ an authorized Volvo workshop is recommended.
A text message can be erased by briefly pressing the
button in the center of the right-side
steering wheel keypad. If the message persists: Contact a workshop
‒ an
authorized Volvo workshop is recommended.
Related information
• Electronic Stability Control (p. 272)