2017 VOLVO XC90 TWIN ENGINE HYBRID engine

MAINTENANCE AND SERVICING
* Option/accessory, for more information, see Introduction.529

Positions
•Fuses 13–17 and 21–36 are called "Micro".
•Fuses 1–12, 18–20 and 37 are called"MCase" and should only be replaced by atrained and qualified Volvo service technician.
FunctionA
Heated rear window30
Power rear seat (driver side)A20A
Pneumatic suspension* compres-sor40
Rear electric heater (passengerside)30
––
Rear electric heater (driver side)30
Power rear seat (passenger side)A20A
––
Power tailgate*25
Power front seat (passenger side)*module20
Trailer hitch* control module40
Seat belt tensioner module (pas-senger side)40
FunctionA
Internal relay windings5
––
Foot movement detection modulefor opening the power tailgate*5
––
Module for electrically folding thirdrow seats*20
Trailer hitch* control module25
Power front seat (driver seat*module20
Seat belt tensioner module (driverside)40
Parking camera*5
––
––
Ionic air cleanerA5A
Feed when ignition is switched on.10
Airbag and seat belt tensionermodules5
FunctionA
Cooler; heated/cooled cup holder
(rear)A10A
Heated rear seat (driver side)*15
––
Blind Spot Information (BLIS)*5
––
Seat belt tensioner modules5
Emission system actuator5
––
––
Heated rear seat (passengerside)*15
––
AXC90 Excellence.

Related information
•Replacing fuses (p. 517)
•Fuses (p. 516)
•Fuses in the passenger compartment(p. 523)
•Fuses in the engine compartment (p. 518)

MAINTENANCE AND SERVICING
530
Replacing bulbs
The halogen headlight bulbs3 can be replacedby the owner.
Before the halogen headlight bulbs can bereplaced, that plastic covering over the headlighthousing has to be removed.

NOTE
Halogen headlights are not available on allmodels or in all markets.
Consult your Volvo retailer if you are uncertainabout the type of headlights in your vehicle.
To do so:
Lift the rubber strip by pressing in toward theengine compartment.
Release the pins in the plastic covering'sfour clips by pressing them down with ascrewdriver or similar object and remove thecovering.
The turn signal, high/low beam, Daytime RunningLight and parking light bulbs will be accessiblewhen the plastic covering has been removed.
Put the covering back in place in the reverseorder.
NOTE
The pins in the clips have to be pressed backcompletely before the clips are placed in theplastic covering.
When the covering is put back in place, thepins must be pressed so that their upper sur-face is flush with the surface of the clip.
3Halogen headlights are not available on all models.

MAINTENANCE AND SERVICING
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531

NOTE
•For information regarding any bulbs notmentioned in this section, please contactyour Volvo retailer or a trained andauthorized Volvo service technician.
•Always switch off the ignition before star-ting to replace a bulb.
•If an error message remains in the dis-play after a faulty bulb has been replaced,contact an authorized Volvo workshop.
•Condensation may form temporarily onthe inside of the lenses of exterior lightssuch as headlights, fog lights, or taillights.This is normal and the lights aredesigned to withstand moisture. Normally,condensation will dissipate after thelights have been on for a short time.
•The optional Active Bending Light bulbscontain trace amounts of mercury. Thesebulbs should always be disposed of by atrained and qualified Volvo service techni-cian.
CAUTION
Never touch the glass of bulbs with your fin-gers. Grease and oils from your fingers vapor-ize in the heat and will leave a deposit on thereflector, which will damage it.

WARNING
•The ignition should be switched off com-pletely (be in ignition mode 0) whenreplacing bulbs.
•If the engine has been running just priorto replacing bulbs in the headlight hous-ing, please keep in mind that componentsin the engine compartment will be hot.
Front bulbs (vehicles with halogen
headlights)
Low beam
High beam
Parking light/Daytime Running Light
Turn signal
(Not in use)

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MAINTENANCE AND SERVICING
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Hood completely closed

Related information
•Engine compartment overview (p. 540)
•Door and seat belt reminders (p. 70)
Engine compartment overview
The engine compartment overview shows somemaintenance points.
Some of the components in the vehicle's electri-cal drive system are located in the engine com-partment.
WARNING
•Orange cables should only be handled bya trained and qualified Volvo service tech-nician.
•A number of the vehicle's componentsuse high voltage and can be very danger-ous if handled improperly.
•Do not touch any components that havenot been clearly described/explained inthis manual.
•Use caution when checking/refilling flu-ids in the engine compartment.
•The cooling fan (located at the front ofthe engine compartment, behind the radi-ator) may start or continue to operate (forup to 6 minutes) after the engine hasbeen switched off.
•Engine cleaning should only be done by aworkshop. If engine cleaning agents areused when the engine has been running,there may a fire risk.
•Before performing any operations in theengine compartment, the ignition shouldalways be completely switched off (inmode 0) and there should be no remotekeys in the passenger compartment. Thegear selector should be in the P (park)position. If the engine has been running,wait until it has cooled before touchingany components in the engine compart-ment.
•The distributor ignition system operatesat very high voltages. Special safety pre-

MAINTENANCE AND SERVICING
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541
cautions must be followed to preventinjury. Always turn the ignition off whenreplacing distributor ignition componentse.g. plugs, coil, etc.
•Do not touch any part of the distributorignition system while the engine is run-ning. This may result in unintended move-ments and body injury.
The layout of the engine compartment may differ slightlyfrom model to model
Coolant expansion tank
Brake fluid reservoir
Washer fluid reservoir
Relay/fuse box
Air cleaner
Engine oil filler cap

Related information
•Ignition modes (p. 400)
•Opening and closing the hood (p. 539)
•Refilling the windshield washer fluid reservoir(p. 547)
Engine oil
The correct oil must be used for the stated oilchange (service) intervals to apply.
Volvo recommends:

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MAINTENANCE AND SERVICING
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CAUTION
•Not checking the oil level regularly canresult in serious engine damage if the oillevel becomes too low.
•Oil that is lower than the specified qualitycan damage the engine.
•Volvo does not recommend the use of oiladditives.
•Always add oil of the same type and vis-cosity as already used.
•Oil changes should be carried out by atrained and qualified Volvo service techni-cian.
•Using oil of higher than the specifiedquality is permitted and may be neces-sary for demanding driving.
Also, refer to the Warranty and Service Recordsinformation booklet for information on oil changeintervals and oil specifications.

Related information
•Checking and refilling engine oil (p. 542)
Checking and refilling engine oil
The oil level is checked electronically.
Oil filler cap6
It may be necessary to top up engine oil betweenregularly scheduled services.
No action is necessary until a message is dis-played in the instrument panel.
WARNING
•Do not allow oil to spill onto or come intocontact with hot exhaust pipe surfaces.
•If Engine oil level Service required isdisplayed, have the vehicle checked by atrained and qualified Volvo service techni-cian. The oil level may be too high.
Checking the oil level
The oil level can be checked inthe center display when theengine is not running.
From the center display'sHome view, swipe the screenfrom right to left to open Appview. Tap Car status and then tap Status toshow the oil level.
Oil level graphic in the center display
The oil level should be checked at regular inter-vals, particularly during the period up to the firstscheduled maintenance service.
If the oil level sensor indicates that the level istoo low, using the correct oil, top up with theamount of oil indicated as soon as possible.
6Models with an electronic oil level sensor do not have a dipstick.

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543

NOTE
•The system cannot detect changes in theoil level immediately. The vehicle must bedriven approximately 20 miles (30 km) orhave been parked on level ground withthe engine off for 5 minutes before theoil level reading will be correct.
•If the necessary conditions are not metfor checking the oil level electronically(time interval after the engine wasswitched off, if the vehicle is parked onan incline, etc.), No values available willbe displayed. This does not indicate aproblem with the oil level sensor.

Related information
•Engine oil (p. 541)
•Ignition modes (p. 400)
Windshield wipers in the serviceposition
The windshield wiper blades must be in the verti-cal (service) position for replacement, washingor to lift them away from the windshield whene.g., removing ice or snow.
Wipers in the service position

CAUTION
Be sure the wiper blades are not frozen inposition before attempting to move them tothe service position.

Putting the windshield wipers in the
service position
The service position can be activated while thevehicle is stationary and the wipers are not acti-vated.
The service position can be activated in two waysfrom the center display:
Via Function view
–From Function view, tap the Wiper ServicePosition button. The indicator light in thebutton will illuminate when the service posi-tion is activated.
>The windshield wipers will move to thevertical position.

Via Settings
1.Tap Settings in the center display's Topview.
2.Tap My CarWipers
3.Tap the Wiper Service Position box.
>The windshield wipers will move to thevertical position.

Deactivating service position
The service position can be deactivated in twoways from the center display:

MAINTENANCE AND SERVICING
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Refilling coolant
Coolant helps keep the gasoline engine at theproper operating temperature. The heat transfer-red from the engine to the coolant can be usedto warm the passenger compartment.
When refilling coolant, follow the instructions onthe package and use the recommended amountof coolant. Never fill the cooling system withwater only; this could lead to freezing, corrosionand engine damage.

WARNING
If the engine has been running, the coolantwill be very hot. Allow the engine to coolbefore opening the coolant expansion tank. Ifthis is not possible, open the cap very slowlyto allow pressure to dissipate.
Coolant expansion tank
Lift the rubber strip by pressing it inward inthe engine compartment.
Remove the plastic cover by folding out thecatch and lifting the cover upward.
Unscrew the expansion tank cap and addcoolant. The level should be between theMIN and MAX marks on the tank.
Put the other components back in place in thereverse order.
CAUTION
•High levels of chlorine, chlorides andother salts may cause corrosion in thecooling system.
•Only use coolants with corrosion protec-tion recommended by Volvo.
•The ratio of coolant to water is 50/50.
•Mix the coolant with tap water of drinka-ble quality.
•If maintenance is performed on the cool-ing system or if the coolant is replaced,flush the cooling system with clean waterbefore adding new a new coolant/watermixture.
•The engine may only be operated with aproperly filled cooling system. Otherwise,high temperatures and cracks in the cyl-inders may occur.

Related information
•Coolant specifications and volumes(p. 566)