2017 VOLVO XC90 T8 brake sensor

DRIVER SUPPORT
* Option/accessory.
346
Park Assist limitations
The Park Assist system has certain limitations.
NOTE
A trailer hitch whose wiring is integrated with the vehicle's electrical system will be takeninto account when measuring the availablespace behind the vehicle.
NOTE
• The system will not detect high objects, such as a loading dock, etc.
• Certain materials or fabrics may not bedetected by the sensors. Objects made ofthese materials or people wearing cloth-ing made of these fabrics may not bedetected.
• Children or animals near the vehicle maynot always be detected.
• Objects such as chains, thin shiny polesor low objects may temporarily not bedetected by the system. This may resultin the pulsing tone unexpectedly stoppinginstead of changing to a constant tone asthe vehicle approaches the object. Insuch cases, use caution when backing upor stop the vehicle to help avoid damage.
• In certain circumstances, the park assistsystem may give unexpected warning sig-nals that can be caused by externalsound sources that use the same ultra-sound frequencies as the system. Thismay include such things as the horns ofother vehicles, wet tires on asphalt, pneu-matic brakes, motorcycle exhaust pipes,other vehicles with similar ultrasound sys-tems, etc. This does not indicate a fault inthe system.
Cleaning the sensors
Location of the Park Assist sensors
The sensors must be cleaned regularly to ensure that they work properly. Clean them with waterand a suitable car washing detergent.
NOTE
If the sensors are obstructed by e.g., dirt, snow, or ice, this could result in false warningsignals from the park assist system or thesystem may not function at all.
Related information
•
Park Assist
* (p. 344)
• Activating/deactivating Park Assist (p. 345)
• Park assist symbols and messages (p. 347)

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DRIVER SUPPORT
* Option/accessory.
358 adjusted by driving slightly forward and backing up. 1.
Put the gear selector in D, wait until the
steering wheel has turned and drive forward slowly.
2. Stop the vehicle when you are instructed by PAP to do so.
3. Put the gear selector in R, back up slowly
and stop when you are instructed by PAP todo so.
When the parking procedure is finished (this willbe indicated by a text message and a graphicimage), PAP switches off automatically. If neces-sary, the driver may need to make minor adjust-ments to ensure that the vehicle is parked cor-rectly.
CAUTION
The warning distance is shorter when PAP is using the sensors than when Park Assist isusing them.
Leaving a parking spaceThis function can only be used for a vehicle that has been par-
allel parked and is activated in
the center display's Function view.
1. Tap the Park out button in the center display's
Function view. 2. Use the turn signal to indicate the direction in which the vehicle should leave the parking space. 3. Follow the instructions provided in the center display. The procedure is the same as when park-ing the vehicle. The steering wheel may turn back slightly when the function is completed and the driver mayhave to turn the back before leaving the parkingspace. If PAP determines that the driver can leave the parking space without assistance, the functionwill deactivate before the vehicle is completelyout of the space.
Related information
• Park Assist Pilot (PAP)
* (p. 354)
• Park Assist Pilot (PAP)
* limitations (p. 358)
• Park Assist Pilot (PAP)
* symbols and mes-
sages (p. 360)
Park Assist Pilot (PAP) * limitations
The PAP function may be limited in certain situa- tions.
The PAP parking sequence is cancelledA parking sequence will be cancelled:
• if the vehicle is driven too fast: above approx. 4 mph (7 km/h)
• if the driver taps
Cancel in the center display
• if the driver moves the steering wheel with sufficient force.
• if the anti-lock brakes or Electronic StabilityControl are activated (e.g., if a wheel beginsto spin or lose traction)
In such cases, a text message will explain whythe parking sequence was cancelled.
NOTE
• PAP will not function correctly if its sen- sors are obstructed by dirt, snow, etc.
• In certain situations, PAP may not be ableto measure a parking space. This couldbe due to external sources of sound (e.g.,a vehicle's horn, tires on wet asphalt,pneumatic brakes, noise from a motorcy-cle's exhaust, etc.) emitting ultrasoundusing approximately the same frequen-cies as PAP.

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STARTING AND DRIVING
* Option/accessory.
364
Instrument panel symbols
Symbol Explanation
A
BRed
symbol: Check the brake fluid
level. If the level is low, top up and have the system inspected todetermine the cause of the loss offluid. Yellow symbol: there is a fault in
the brake pedal sensor.
A
B Steady glow for more than 2 seconds: there is a fault in theABS system. The normal brakesystem will still function but with-out ABS brake modulation.
If Brake pedalCharacteristics
changed Service required is
displayed, the Brake-by-Wire sys- tem is not functioning properly.The brake pedal must be pressedfarther down and with more pres-sure for braking effect.
A US models
B Canadian models
WARNING
If both symbols illuminate at the same time and the brake level is below the MIN mark in
the reservoir or if a brake system-related mes-sage is shown in the instrument panel: DO
NOT DRIVE . Have the vehicle towed to a
trained and qualified Volvo service technician and have the brake system inspected. If both symbols illuminate at the same time and the brake level is normal (not below the
MIN mark in the reservoir) or if a brake sys-
tem-related message is shown in the instru- ment panel: drive the vehicle carefully to anauthorized Volvo workshop and have thebrake system inspected by a trained andqualified Volvo service technician.
Related information
• Brake functions (p. 364)
• Brake assist system (p. 365)
• Emergency brake lights (p. 366)
• General information about Twin Engine Plug- in Hybrid vehicles (p. 16)
Brake functions
The vehicle's standard braking features are aug- mented by a number of auxiliary help functions.
In addition to the wheel brakes and the parking brake, the vehicle is equipped with several auto-matic brake assist functions. These systems helpthe driver by e.g., keeping the vehicle stationarywhen the brake pedal is not depressed (at a traf-fic light or intersection), when starting up a hill orwhen driving down a hill. These systems include: • Auto-hold brakes
• Hill Start Assist
• Braking assist after a collision
• Hill Descent Control
*
Related information
•Brakes (p. 362)
• Parking brake (p. 369)
• Hill Descent Control (HDC) (p. 366)
• Auto-hold brake function (p. 365)

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STARTING AND DRIVING
* Option/accessory.
378
Vehicle with pneumatic suspension *
If the vehicle is equipped with the optional pneu- matic suspension, this feature must be deacti-vated before the vehicle is lifted onto a tow truck. To do so:1.
Tap
Settings in the center display's Top
view.
2. Tap
My CarSuspension .
3. Select
Disable Leveling Control.
Jump startingDo not attempt to start the engine by towing the vehicle. This could result in damage to the three-way catalytic converter and the electric motor.Use a 12-volt auxiliary battery or one in anothervehicle.
WARNING
PROPOSITION 65 WARNING! Battery posts, terminals, and related accesso- ries contain lead and lead compounds, chemi-cals known to the state of California to causecancer and reproductive harm. Wash handsafter handling.
CAUTION
Connect the jumper cables carefully to avoid short circuits with other components in theengine compartment.
WARNING
• Do not connect the jumper cable to any part of the fuel system or to any movingparts. Avoid touching hot manifolds.
• Batteries generate hydrogen gas, whichis flammable and explosive.
• Battery fluid contains sulfuric acid. Do notallow battery fluid to contact eyes, skin,fabrics or painted surfaces. If contactoccurs, flush the affected area immedi-ately with water. Obtain medical helpimmediately if eyes are affected.
• Never expose the battery to open flameor electric spark.
• Do not smoke near the battery.
• Failure to follow the instructions for jumpstarting can lead to injury.
Related information
• Towing eyelet (p. 376)
• Jump starting (p. 382)
• Parking brake (p. 369)
• Ignition modes (p. 389)
Fuel Volvo recommends the use of detergent gaso- line to control engine deposits.
Deposit control gasoline (detergent
additives)
Detergent gasoline is effective in keeping injec- tors and intake valves clean. Consistent use ofdeposit control gasolines will help ensure gooddrivability and fuel economy. If you are not surewhether the gasoline contains deposit controladditives, check with the service station operator.
NOTE
Volvo does not recommend the use of exter- nal fuel injector cleaning systems.
Unleaded fuelEach Volvo has a three-way catalytic converter and must use only unleaded gasoline. U.S. andCanadian regulations require that pumps deliver-ing unleaded gasoline be labeled "UNLEADED".Only these pumps have nozzles which fit yourvehicle's filler inlet. It is unlawful to dispense lea-ded fuel into a vehicle labeled "unleaded gaso-line only". Leaded gasoline damages the three-way catalytic converter and the heated oxygensensor system. Repeated use of leaded gasolinewill lessen the effectiveness of the emission con-trol system and could result in loss of emissionwarranty coverage. State and local vehicle

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MAINTENANCE AND SERVICING
* Option/accessory.
514
Function [A]
– –
Horn 20
Alarm siren* 5
Brake system control module (valves, parking brake) 40
Windshield wipers 30
Tailgate window washer 25
Heated windshield
*, passenger
side 40
– –
Brake system control module (ABS pump)
40
– –
Heated windshield
*, passenger
side Shunt
Feed when ignition is switched on to: engine control module,transmission components, elec-trical power steering, centralelectrical module 5
Exterior vehicle sound (certain markets)
5
Function
[A]
Passenger side headlight 7,5
– –
– –
– –
Air bags; Occupant Weight Sen- sor (OWS) 5
Driver side headlight Driver's side headlight, certain LED models7.5
15
Accelerator pedal sensor 5
Transmission control module; Gear selector control module 15
Engine control module 5
– –
– –
– –
– –
Engine control module; Actuator; Turbo-charger valve20
Function
[A]
Solenoids; Valves; Engine cool- ing system thermostat 10
Vacuum regulators; Valve 7.5
Spoiler shutter control module; Radiator shutter control module;Fuel leakage detection 5
– –
Heated oxygen sensors (front and rear)
15
Oil pump solenoid; A/C mag- netic coupling; heated oxygensensor (center)15
– –
Engine control module 20
Ignition coils; Spark plugs 15
– –
– –
Transmission oil pump control module
30
Vacuum pump control module 40
Transmission actuator 25

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MAINTENANCE AND SERVICING
* Option/accessory.
518
Positions
• Fuses 1, 3–21, 23–36, 39–53 and 55–59 are called "Micro".
• Fuses 2, 22, 37–38 and 54 are called"MCase" and should only be replaced by atrained and qualified Volvo service technician.
Function
A
– –
– –
– –
Alarm system movement sensorA
5
Media player 5
Instrument panel 5
Center console buttons 5
Sun sensor 5
– –
– –
Steering wheel module 5
Module for start knob and parking brake 5
Heated steering wheel
* module 15
Function
A
– –
– –
– –
– –
Climate system control module 10
– –
On-board diagnostics (OBDII) 10
Center display 5
Climate system blower module (front)40
– –
Instrument lighting; Courtesy light- ing; Auto-dim rearview mirror; Rainand light sensor; Rear tunnel con- sole keypad
*B
; Power front seats *;
Power rear seats C
; Display for rear
seat convenience functions *; Rear
seat massage function *; Rear door
control panels 7.5
Control module for driver support functions
5
Function
A
Panorama roof and sun shade*20
Head-up display
* 5
Courtesy lighting 5
– –
Ceiling console display (seat belt reminder, front passenger side air-bag indicator) 5
– –
Humidity sensor 5
Rear passenger-side door module 20
Fuses in the cargo compartment 10
Internet connection control module; Volvo On Call control module
5
Rear driver-side door module 20
Infotainment control module (amplifier)40
Climate system blower module (rear)
* 40
Multi-band antenna module 5
Front seat massage function 5

MAINTENANCE AND SERVICING
}}
* Option/accessory.543
CAUTION
When using an automatic car wash in which the vehicle has to be able to roll freely, theauto-hold brake function must be deactivated.If this is not done, the brakes will automati-cally be applied when the vehicle is stationary. To deactivate this function:
1. Drive the vehicle into the car wash
2. Turn off the auto-hold function using the
control on the center console
3. Turn off the parking brake's automatic function in the center display's Top view (tap
Settings, tap My CarParking
Brake and Suspension and deselectAuto Activate Parking Brake)
4. Put the gear selector in N
5. Switch off the ignition by turning the start knob to STOP and holding it in this posi-
tion for at least 4 seconds
The vehicle will then be able to roll freely.
CAUTION
• Before driving into an automatic car wash, turn off the optional rain sensor toavoid damaging the windshield wipers.
• Make sure that side view mirrors, auxiliarylamps, etc, are secure, and that anyantenna(s) are retracted or removed. Oth-erwise there is risk of the machine dis-lodging them.
• Chromed wheels:
Clean chrome-plated
wheels using the same detergents usedfor the body of the vehicle. Aggressivewheel-cleaning agents can permanentlystain chrome-plated wheels.
WARNING
• When the vehicle is driven immediately after being washed, apply the brakes,including the parking brake, several timesin order to remove any moisture from thebrake linings.
• Engine cleaning agents should not beused when the engine is warm. This con-stitutes a fire risk.
Exterior componentsVolvo recommends the use of special cleaningproducts, available at your Volvo retailer, forcleaning colored plastic, rubber, or ornamental components such as chromed strips on the exte-rior of your vehicle. The instructions for usingthese products should be followed carefully. Sol-vents or stain removers should not be used. The frames around the side windows, roof rails and door frames near the windows
* are made of
anodized aluminum and should only be washed with a cleaning product with a pH value between3.5 till 11.5.
Components that should be washed with a cleaning product with a pH value between 3.5 till 11.5 (genericillustration)

INDEX
571
Options 26
Outside temperature sensor 118
Overhead courtesy lighting 151
Overheating, engine 375Owner's information
mobile applications 25
Owner's manual 21
Ownership, changing 118
Oxygen sensors, heated 381
P
Paint, touching up 547, 548
Park assist 344, 345, 346, 347
Park Assist Camera 348, 350, 352, 353 settings 348, 352
Park Assist Pilot 354, 355, 358, 360Parking brake electric, applying/releasing 369, 371
Parking light bulb, replacing 529Passenger compartment fuses 516
Passive Entry system location of antennas 244
Permissible axle weight 557
Phone phone book 443
receiving calls 441
text messages 444, 445
Pilot Assist 285, 291, 294, 297, 298, 300, 301
Plug-in hybrid general information 16
Polishing 549 Power front seat memory function 168
Power mirrors 106 defroster 204
Power steering adjustable 258
Power tailgate 248
Power windows 111
Preconditioning 187, 189 starting/stopping 192
symbols and messages 193
timer 190
Preconditioning, retaining climate comfort 189
Pregnancy, using seat belts during 62
PROPOSITION 65 WARNING 382R
Radar driver support systems 304, 308
Radar sensor limitations 305
Radio RBDS 424
settings 424 SiriusXM ®
Satellite radio 429, 430, 432
Radio functions HD digital radio 426, 427, 428, 429
Rain sensor 161
Rear Collision Warning 324
Rear fog lights 149
Rear park assist 344, 345, 346, 347
Rear seat head restraints 173
Rear seats 173 accessing the third row 178
adjusting backrest tilt 175
center head restraint 173
folding 176, 178
moving forward/rearward 175
Rearview mirror compass 141, 142
Rear window defroster 204
Recalls 62