engine VOLVO XC90 TWIN ENGINE HYBRID 2017 Owners Manual

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MAINTENANCE AND SERVICING
514
H8 AGM battery with strap
•When replacing the start battery anAbsorbed Glass Mat (AGM) must be used.
•When replacing the start battery, a new bat-tery with the same specifications and dimen-sions must be used. The battery should onlybe replaced by a trained and qualified Volvoservice technician.

Related information
•Jump starting (p. 395)
•Battery symbols (p. 516)
Support battery
Vehicles equipped with Start/Stop are equippedwith two 12-volt batteries.
In addition to a heavy-duty start battery, modelswith Start/Stop also have a support battery thatprovides extra current during the Start/Stopfunction's start sequence.
The following table shows the specifications forthe support battery:
Current (V)12
Cold start capacity (ColdCranking Amperes -CCA) (A)170
Dimensions, L×W×H in.(mm)5.9×3.5×5.1(150×90×130)
Capacity (Ah)10
•When replacing the start battery or supportbattery in a vehicle with Start/Stop, anAbsorbed Glass Mat (AGM) must be used.
•The greater the current consumption in thevehicle, the more the generator has to oper-ate and the battery is charged. This increasesfuel consumption.
•When the start battery's charge is below theminimum permitted level, the Start/Stopfunction will be disabled.
When the Start/Stop function is temporarily disa-bled due to high current consumption:
•The engine will auto-start, even if the brakepedal is depressed.
The support battery does not normally requiredmore service than the start battery. If questionsarise, consult a Volvo retailer or trained and quali-fied Volvo service technician.
CAUTION
When connecting an external start battery ora battery charger, the Start/Stop function maybe temporarily disabled if the negative termi-nal on the vehicle's start battery is used toconnect an external start battery or a batterycharger. Only the negative connection pointin the engine compartment may be used as aground point.

MAINTENANCE AND SERVICING
515

NOTE
If the start battery is completely dischargedand the vehicle has no normal electrical func-tions, and the engine is then started using anauxiliary battery or battery charger, theStart/Stop function will be activated. Theengine can then be auto-stopped but may notauto-start again due to an insufficient chargelevel in the start battery.
To help ensure auto-start, the start batteryshould be charged first. At a temperature ofapprox. 60 °F (15 °C), the battery should becharged for at least 1 hour, preferably usingan external battery charger. At lower tempera-tures, the battery should be charged for3–4 hours.
If a charger is not available, it is advisable todisable the Start/Stop function until the bat-tery is sufficiently recharged.

Related information
•Start battery (p. 512)
Hybrid battery
The vehicle's electric motor is powered by arechargeable, maintenance-free, lithium-ionhybrid battery.
The vehicle cannot be started if the hybridbattery is completely discharged.
WARNING
The vehicle's hybrid battery may only be serv-iced or replaced by a trained and qualifiedVolvo service technician.

Battery coolant
The hybrid battery's cooling system has its ownexpansion tank.
Filling the hybrid battery's cooling system shouldonly be done by a trained and qualified Volvoservice technician.
Related information
•Charging the hybrid battery (p. 413)

MAINTENANCE AND SERVICING
517

Location of the fuseboxes
Engine compartment
Under the glove compartment
Cargo compartment

Related information
•Replacing fuses (p. 517)
•Fuses in the cargo compartment (p. 527)
•Fuses in the engine compartment (p. 518)
•Fuses in the passenger compartment(p. 523)
Replacing fuses
The fuses help protect the vehicle's electricalcomponents from overloading or short circuits.
Fuse replacement
1. See the list of fuse boxes for their locations.
2. Pull the fuse straight out and examine it fromthe side to see if the curved metal wire in thefuse is intact.
3. If the wire is broken, insert a new fuse of thesame color and amperage (written on thefuse).

WARNING
Never use metal objects or fuses with higheramperage than those stated on the followingpages. Doing so could seriously damage oroverload the vehicle's electrical system.

Related information
•Fuses (p. 516)
•Fuses in the cargo compartment (p. 527)
•Fuses in the engine compartment (p. 518)
•Fuses in the passenger compartment(p. 523)

MAINTENANCE AND SERVICING
518
Fuses in the engine compartment
The fuses in the engine compartment help pro-tect electrical components such as engine andbrake functions.

MAINTENANCE AND SERVICING
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* Option/accessory, for more information, see Introduction.521
Function[A]
Horn20
Alarm siren*5
Brake system control module(valves, parking brake)40
Windshield wipers30
Tailgate window washer25
Heated windshield*, passengerside40
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Brake system control module(ABS pump)40
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Heated windshield*, passengersideShunt
Feed when ignition is switchedon to: engine control module,transmission components, elec-trical power steering, centralelectrical module
5
Exterior vehicle sound (certainmarkets)5
Passenger side headlight7,5
Function[A]
––
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––
Air bags; Occupant Weight Sen-sor (OWS)5
Driver side headlight7.5
Accelerator pedal sensor5
Transmission control module;Gear selector control module15
Engine control module5
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––
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Engine control module; Actuator;Turbo-charger valve20
Solenoids; Valves; Engine cool-ing system thermostat10
Vacuum regulators; Valve7.5
Function[A]
Spoiler shutter control module;Radiator shutter control module;Fuel leakage detection
5
––
Heated oxygen sensors (frontand rear)15
Oil pump solenoid; A/C mag-netic coupling; heated oxygensensor (center)
15
––
Engine control module20
Ignition coils; Spark plugs15
––
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Transmission oil pump controlmodule30
Vacuum pump control module40
Transmission actuator25
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MAINTENANCE AND SERVICING
* Option/accessory, for more information, see Introduction.526
FunctionA
Rear passenger-side door module20
Fuses in the cargo compartment10
Internet connection control module;Volvo On Call control module5
Rear driver-side door module20
Infotainment control module(amplifier)40
Climate system blower module(rear)40
Multi-band antenna module5
Front seat massage function5
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Tailgate window wiper15
Fuel pump control module15
Relay windings for engine compart-ment electrical module; Relay wind-ing for transmission oil pump
5
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Driver side front seat heating*15
Passenger side front seat heating*15
FunctionA
Coolant pump10
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Front driver-side front door module20
Active chassis control module*20
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Sensus control module10
––
––
Front passenger-side front doormodule20
Display for rear seat conveniencefunctions5C
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Circuit breaker for fuses 53 and 5815
ACertain markets only.BNot ExcellenceCExcellence only

Related information
•Fuses (p. 516)
•Replacing fuses (p. 517)
•Fuses in the engine compartment (p. 518)
•Fuses in the cargo compartment (p. 527)

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
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Rear electric heater (driver side)30
Power rear seat (passenger side)A20A
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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
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Foot movement detection modulefor opening the power tailgate*5
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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
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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
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Blind Spot Information (BLIS)*5
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Seat belt tensioner modules5
Emission system actuator5
––
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Heated rear seat (passengerside)*15
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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
540
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-