Volvo XC90 T8 Twin Engine Plug-in Hybrid (2017 year). Instruction - part 31

MAINTENANCE AND SERVICING

516

Battery symbols

There are information and warning symbols on
the battery.

Wear protective goggles.

See the owner's manual for
additional information.

Keep batteries away from
children.

Batteries contain corrosive
acid.

Avoid smoking, open
flames, and/or sparks.

Risk of explosion

Recycle properly

NOTE

A used battery should be disposed of in an
environmentally responsible manner. Consult
your Volvo retailer or take the battery to a
recycling station.

Related information

•

Start battery (p. 512)

Fuses

The fuses help protect the vehicle's electrical
components from overloading or short circuits.

WARNING

Never use metal objects or fuses with higher
amperage than those stated on the lists of
fuses. Doing so could seriously damage or
overload the vehicle's electrical system.

Orange wires may only be handled by trained
and authorized Volvo service technicians or
licensed electricians.

A number of component in the vehicle used
high voltage electrical current and can be very
dangerous to touch.

Do not touch any components that are not
clearly described in this owner's information.

If an electrical component fails to function, this
may be due to a blown fuse. If the same fuse
blows repeatedly, this indicates a problem with
the component, which should be inspected by a
trained and qualified Volvo service technician.

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 electrical
components 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 from

the side to see if the curved metal wire in the
fuse is intact.

3. If the wire is broken, insert a new fuse of the

same color and amperage (written on the
fuse).

WARNING

Never use metal objects or fuses with higher
amperage than those stated on the following
pages. Doing so could seriously damage or
overload 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

}}

519

There is a fuse removal tool on the inside of the
fuse box cover. There are also positions in the
fuse box for several extra fuses.

Positions

There is a decal on the inside of the cover with a
list of fuses.

•

Fuses 1–13, 18–30, 35–37, 46–54  and
55–70 are called "Micro".

•

Fuses 14–17, 31–34, 38–45  and 71–78
are called "MCase" and should only be

||

MAINTENANCE AND SERVICING

* Option/accessory, for more information, see Introduction.

520

replaced by a trained and qualified Volvo
service technician.

Function

[A]

Converter for controlling feed to
the rear axle electric motor

5

–

–

–

–

Control module for actuator for
engaging/changing gears

5

High Voltage Coolant Heater
control module

5

Control module for: A/C, charge
module, heat exchanger cut-off
valve, cut-off valve for coolant
through the climate system

5

Hybrid battery control module;
high-voltage converter for com-
bined high-voltage generator/
starter motor with 500 V–12 V
voltage converter

5

–

–

Converter for controlling feed to
the rear axle electric motor

10

Function

[A]

Hybrid battery control module
for high-voltage converter for
combined high-voltage genera-
tor/starter motor with 500 V–12
V voltage converter

10

Charging module

5

Cut-off valve for hybrid battery
coolant; coolant pump 1 for
hybrid battery

10

Coolant pump for electric drive
system

10

Hybrid component cooling fan

25

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Function

[A]

Front USB socket

*

5

12-volt socket in the front tun-
nel console

15

12-volt socket on the rear side
of the tunnel console

A

12-volt socket in the tunnel con-
sole between the rear seats 

B

15

12-volt socket in the cargo com-
partment

USB sockets for iPad holders

B

15

–

–

–

–

–

–

–

–

Heated windshield

* driver side

Shunt

Heated windshield

* driver side

40

Headlight washers

*

25

Windshield washer

25

–

–

MAINTENANCE AND SERVICING

}}

* Option/accessory, for more information, see Introduction.

521

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, central
electrical module

5

Exterior vehicle sound (certain
markets)

5

Passenger side headlight

7,5

Function

[A]

–

–

–

–

–

–

Air bags; Occupant Weight Sen-
sor (OWS)

5

Driver side headlight

7.5

Accelerator pedal sensor

5

Transmission control module;
Gear selector control module

15

Engine control module

5

–

–

–

–

–

–

–

–

Engine control module; Actuator;
Turbo-charger valve

20

Solenoids; Valves; Engine cool-
ing system thermostat

10

Vacuum regulators; Valve

7.5

Function

[A]

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 oxygen
sensor (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

–

–

||

MAINTENANCE AND SERVICING

522

Function

[A]

–

–

–

–

A

Not XC90 Excellence

B

XC90 Excellence

Related information

•

Fuses (p. 516)

•

Replacing fuses (p. 517)

MAINTENANCE AND SERVICING

}}

523

Fuses in the passenger

compartment

The fuses in the passenger compartment
(located under the glove compartment) help pro-

tect electrical components such as the 120-volt
socket, displays and door modules.

There is a fuse removal tool on the inside of the
fuse box covers. There are also positions in the
fuse box for several extra fuses.

||

MAINTENANCE AND SERVICING

524

MAINTENANCE AND SERVICING

}}

* Option/accessory, for more information, see Introduction.

525

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 a
trained and qualified Volvo service technician.

Function

A

–

–

120-volt socket between the rear
seats

30

–

–

Alarm system movement sensor

A

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

Function

A

Heated steering wheel

* module

15

–

–

–

–

–

–

–

–

Climate system control module

10

–

–

On-board diagnostics (OBDII)

10

Center display

5

Climate system blower module
(front)

40

–

–

Function

A

Instrument lighting; Courtesy light-
ing; Rearview mirror auto-dim func-
tion; Rain and light sensor; Rear
tunnel console keypad

*; Power

front seats

*

Instrument lighting; Courtesy light-
ing; Rearview mirror auto-dim func-
tion; Rain and light sensor; Rear
tunnel console keypad

*

B

; Power

front seats

*; Power rear seats

C

;

Display for rear seat convenience
functions

*; Rear seat massage

function

*

7.5

Control module for driver support
functions

5

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

||

MAINTENANCE AND SERVICING

* Option/accessory, for more information, see Introduction.

526

Function

A

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

–

–

Tailgate window wiper

15

Fuel pump control module

15

Relay windings for engine compart-
ment electrical module; Relay wind-
ing for transmission oil pump

5

–

–

Driver side front seat heating

*

15

Passenger side front seat heating

*

15

Function

A

Coolant pump

10

–

–

Front driver-side front door module

20

Active chassis control module

*

20

–

–

Sensus control module

10

–

–

–

–

Front passenger-side front door
module

20

Display for rear seat convenience
functions

5

C

–

–

Circuit breaker for fuses 53 and 58

15

A

Certain markets only.

B

Not Excellence

C

Excellence 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

528

The fuse box is under the storage compartment on the right side

There is a fuse removal tool on the inside of the
fuse box cover. There are also positions in the
fuse box for several extra fuses.

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 a
trained and qualified Volvo service technician.

Function

A

Heated rear window

30

Power rear seat (driver side)

A

20

A

Pneumatic suspension

* compres-

sor

40

Rear electric heater (passenger
side)

30

–

–

Rear electric heater (driver side)

30

Power rear seat (passenger side)

A

20

A

–

–

Power tailgate

*

25

Power front seat (passenger side)

*

module

20

Trailer hitch

* control module

40

Seat belt tensioner module (pas-
senger side)

40

Function

A

Internal relay windings

5

–

–

Foot movement detection module
for opening the power tailgate

*

5

–

–

Module for electrically folding third
row seats

*

20

Trailer hitch

* control module

25

Power front seat (driver seat

*

module

20

Seat belt tensioner module (driver
side)

40

Parking camera

*

5

–

–

–

–

Ionic air cleaner

A

5

A

Feed when ignition is switched on.

10

Airbag and seat belt tensioner
modules

5

Function

A

Cooler; heated/cooled cup holder
(rear)

A

10

A

Heated rear seat (driver side)

*

15

–

–

Blind Spot Information (BLIS)

*

5

–

–

Seat belt tensioner modules

5

Emission system actuator

5

–

–

–

–

Heated rear seat (passenger
side)

*

15

–

–

A

XC90 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 bulbs

3

 can be replaced

by the owner.

Before the halogen headlight bulbs can be
replaced, that plastic covering over the headlight
housing has to be removed.

NOTE

Halogen headlights are not available on all
models or in all markets.

Consult your Volvo retailer if you are uncertain
about the type of headlights in your vehicle.

To do so:

Lift the rubber strip by pressing in toward the
engine compartment.

Release the pins in the plastic covering's
four clips by pressing them down with a
screwdriver or similar object and remove the
covering.

The turn signal, high/low beam, Daytime Running
Light and parking light bulbs will be accessible
when the plastic covering has been removed.

Put the covering back in place in the reverse
order.

NOTE

The pins in the clips have to be pressed back
completely before the clips are placed in the
plastic covering.

When the covering is put back in place, the
pins must be pressed so that their upper sur-
face is flush with the surface of the clip.

3

Halogen headlights are not available on all models.

MAINTENANCE AND SERVICING

}}

531

NOTE

•

For information regarding any bulbs not
mentioned in this section, please contact
your Volvo retailer or a trained and
authorized 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 on
the inside of the lenses of exterior lights
such as headlights, fog lights, or taillights.
This is normal and the lights are
designed to withstand moisture. Normally,
condensation will dissipate after the
lights have been on for a short time.

•

The optional Active Bending Light bulbs
contain trace amounts of mercury. These
bulbs should always be disposed of by a
trained 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 the
reflector, which will damage it.

WARNING

•

The ignition should be switched off com-
pletely (be in ignition mode 0) when
replacing bulbs.

•

If the engine has been running just prior
to replacing bulbs in the headlight hous-
ing, please keep in mind that components
in 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)

||

MAINTENANCE AND SERVICING

532

Taillight bulbs

Brake light (LED)

Side marker light (LED)

Backup light

4

Taillight (LED)

Turn signal (LED)

Fog light (LED)

High-mounted brake light (LED)

Related information

•

Bulb specifications (p. 536)

•

Removing the rectangular headlight cover
(p. 532)

•

Replacing parking light bulbs (p. 534)

•

Replacing front turn signal bulbs (p. 535)

•

Replacing High Beam headlight bulbs
(p. 534)

•

Replacing low beam headlight bulbs
(p. 533)

Removing the rectangular headlight

cover

Most of the bulbs in the headlight housing can
be accessed when the rectangular cover has
been removed.

Before the rectangular cover can be removed, the
plastic covering must be removed, see the article
"Replacing bulbs" for information.

1. Loosen the cover's four screws with a T20

Torx screwdriver (1) but do not remove them
completely (turning them 3–4 turns is
enough).

2. Push the cover to the side.

3. Remove the cover.

Put the cover back in place in the reverse order.

4

Must be replaced by a trained and qualified Volvo service technician.

MAINTENANCE AND SERVICING

533

Related information

•

Replacing bulbs (p. 530)

Replacing low beam headlight bulbs

On models with halogen headlights, the low
beam headlight bulb can be replaced by the
owner.

Before the bulb can be replaced, the plastic cov-
ering over the headlight housing has to be
removed, see the article "Replacing bulbs."

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 the
reflector, which will damage it.

Driver's side bulb housing shown

1. Remove the low beam round rubber cover

from the headlight housing.

2. Remove the connector from the bulb.

3. Remove the bulb by pressing it slightly

upward and then pulling it out.

4. Insert the bulb in the socket. The bulb's guid-

ing pin should point straight up.

5. Press the connector into place.

6. Put the rubber cover back into place.

Related information

•

Replacing bulbs (p. 530)

•

Bulb specifications (p. 536)