VOLVO XC90 TWIN ENGINE 2018 Owners Manual

MAINTENANCE AND SERVICE
619
Hybrid battery
The vehicle's electric motor is powered by a
rechargeable, maintenance-free, lithium-ion
hybrid battery.
NOTE The vehicle cannot be started if the hybrid
battery is discharged.
NOTE
If both the starter battery and the hybrid bat-
tery are discharged, both batteries must be
charged. In such cases, it is not possible to
charge only the hybrid battery first.
The starter battery must have a certain level
of charge for it to be possible to charge the
hybrid battery.
WARNING
Hybrid battery replacement may only be per-
formed by a workshop – an authorized Volvo
workshop is recommended.
CoolantThe hybrid battery's cooling system has its own
expansion tank.
CAUTION Filling the hybrid battery coolant should only
be performed by a workshop – an authorized
Volvo workshop is recommended.
SpecificationsType: Lithium-ion
Power reserve: 10.4 kWh.
NOTE
The capacity of the hybrid battery decreases
with age and use, which could result in
increased use of the combustion engine,
leading to higher fuel consumption and
reduced electric motor range.
Related information
•
Battery symbols (p. 620)
• Start battery (p. 615)
• Charging the hybrid battery (p. 407)

MAINTENANCE AND SERVICE
620Battery symbols
There are warning symbols and information on
the batteries. 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 start battery contains lead and must
be recycled in an environmentally responsible
manner.
Related information
•
Start battery (p. 615)
• Hybrid battery (p. 619) Fuses and fuseboxes
All electrical functions and components are pro-
tected by a number of fuses in order to protect
the vehicle's electrical system from damage by
short circuiting or overloading.
WARNING Never use a foreign object or a fuse with a
higher amperage than that specified to
replace a fuse. This could cause significant
damage to the electrical system and possibly
lead to a fire.
WARNING
Orange wiring may only be handled by quali-
fied personnel.
WARNING
Several components in the vehicle work with
high voltage that can be hazardous in case of
an incorrect procedure.
Do not touch anything that is not clearly
described in this Owner's Manual.
If any electrical component or function is not
responding, the component may have blown a
fuse due to temporary overload. If the same fuse
blows repeatedly, there may be a problem with
the component. Volvo recommends contacting an
authorized Volvo workshop to have the compo-
nent checked.

MAINTENANCE AND SERVICE
621
Location of fuseboxesThe illustration is generic - appearance may vary accord-
ing to vehicle model.
Engine compartment
Under the glove compartment
Trunk/cargo compartment
Related information
•
Replacing fuses (p. 621)
• Fuses in the cargo compartment (p. 629)
• Fuses in the engine compartment (p. 622)
• Fuses under the glove compartment
(p. 626) Replacing fuses
All electrical functions and components are pro-
tected by a number of fuses in order to protect
the vehicle's electrical system from damage by
short circuiting or overloading.
1. Refer to the fuse diagram to locate the fuse.
2.

Pull out the fuse and examine it from the
side to determine if the curved metal wire in
the fuse is intact.
3. If the wire is broken, replace the fuse with a new fuse of the same color and amperage.
WARNING Never use a foreign object or a fuse with a
higher amperage than that specified to
replace a fuse. This could cause significant
damage to the electrical system and possibly
lead to a fire.
WARNING
Contact an authorized Volvo workshop for
assistance replacing fuses not listed in the
Owner's Manual. If performed incorrectly, sig-
nificant damage can be caused to the electri-
cal system.
Related information
•
Fuses and fuseboxes (p. 620)
• Fuses in the cargo compartment (p. 629) •
Fuses in the engine compartment (p. 622)
• Fuses under the glove compartment
(p. 626)

MAINTENANCE AND SERVICE
622Fuses in the engine compartment
The fuses in the engine compartment help pro-
tect electrical components such as engine and
brake functions.

MAINTENANCE AND SERVICE
}}
623
Fuse pliers are provided on the inside of the fuse
box cover to assist in removing and inserting
fuses.
There are also spaces for several extra fuses in
the fusebox.
PositionsThere is a decal with a diagram of the locations
of the fuses on the inside of the cover.
• Fuses 1–13, 18–30, 35–37 and 46–70 are
"Micro" fuses.
• Fuses 14–17, 31–34, 38–45 and 71–78 are
"MCase" fuses and should only be replaced
by a workshop 17
. Function
AA –
––
––
–Control module for actuator for
engaging/changing gears, auto-
matic transmission
5High-voltage coolant heater
control module
5 Function
AA Control module for A/C; heat
exchanger cut-off valve; cut-off
valve for coolant through the cli-
mate 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
rear axle electric motor
10 Hybrid battery control module;
high-voltage converter for com-
bined high-voltage generator/
starter motor with 500 V–12 V
voltage converter
10 Charge module
5 Cut-off valve for hybrid battery
coolant; coolant pump 1 for
hybrid battery
10 Coolant pump for electric drive
system
10 Function
AA Hybrid component cooling fan 25
–
– –
– –
– –
– –
– –
– –
– –
– –
– 12 V outlet in tunnel console,
front
15 12 V outlet in tunnel console
between second-row seats
B
12 V outlet in tunnel console,
between rear seats C
; USB ports
in tunnel console between rear
seats C 15
17
An authorized Volvo workshop is recommended.

||MAINTENANCE AND SERVICE
* Option/accessory.
624 Function
AA 12 V outlet in trunk/cargo com-
partment*
USB ports for iPad holders
C15 –
––
––
––
–Heated windshield*, left side
ShuntHeated windshield*, left side
40Headlight washers*
25Windshield washer
25–
–Horn
20Alarm siren*
5Brake system control module
(valves, parking brake)
40Wipers
30Rear window washer
25 Function
AA Heated windshield*, right side
40 Parking heater*
20 Brake system control module
(ABS pump)
40 –
– Heated windshield*, right side
Shunt Fed when ignition is on: Engine
control module; transmission
components, electrical power
steering, central electrical mod-
ule
5 Exterior vehicle sound (certain
markets)
5 Right-side headlight
7.5
Right-side headlight, some mod-
els with LED D 15 –
– –
– –
– Airbags
5 Function
AA Left-side headlight
7.5
Left-side headlight, some mod-
els with LED D 15 Accelerator pedal sensor
5 Transmission control module;
gear selector control module
15 Engine control module
5 –
– –
– –
– –
– Engine control module; actuator;
throttle unit; turbo-charger valve
20 Solenoids; valve; engine cooling
system thermostat
10 Vacuum regulators; valve 7.5
Spoiler shutter control module;
radiator shutter control module
5 –
–

MAINTENANCE AND SERVICE
625Function
AA Heated oxygen sensor, front;
heated oxygen sensor, rear
15Oil pump solenoid; A/C mag-
netic coupling; heated oxygen
sensor (center)
15–
–Engine control module
20Ignition coils; spark plugs 15
–
––
–Transmission oil pump control
module
30Vacuum pump control module 40
Transmission actuator
25–
––
––
–A
Ampere
B Not Excellence
C Excellence
D LED (Light Emitting Diode)
Related information
• Fuses and fuseboxes (p. 620)
• Replacing fuses (p. 621)

MAINTENANCE AND SERVICE
626Fuses under the glove compartment
Fuses under the glove compartment provide pro-
tection for e.g. electrical outlets, displays and
door modules.

MAINTENANCE AND SERVICE
}}
* Option/accessory. 627
Fuse pliers are provided on the inside of the fuse
box cover to assist in removing and inserting
fuses.
There are also spaces for several extra fuses in
the distribution box in the engine compart-
ment.
Positions
•
Fuses 1, 3-21, 23-36, 39-53 and 55-59 are
"Micro" fuses.
• Fuses 2-22, 37-38 and 54 are "MCase"
fuses and should only be replaced by a work-
shop 18
. Function
AA –
––
––
–Movement sensor*
5Media player
5Instrument panel
5Center console buttons
5Sun sensor
5 Function
AA –
– –
– Steering wheel module
5 Module for start knob and parking
brake controls
5 Heated steering wheel* module
15 –
– –
– –
– –
– Climate system control module 10
–
– Data link connector OBD-II 10
Center display
5 Climate system blower module
(front)
40 USB HUB
5 Function
AA Instrument lighting; Interior lighting;
Rearview mirror auto-dim function*;
Rain and light sensors*; Rear tun-
nel console keypad, second row of
seats* B
; Power front seats*; Rear
door control panels; Climate sys-
tem blower module left/right
Power rear seats C
; Display for rear
seat convenience functions C
; Rear
seat massage function C7.5 Control module for driver support
functions
5 Panoramic roof with sun curtain*
20 Head-up display*
5 Passenger compartment lighting 5
–
– Ceiling console display (seat belt
reminder/front passenger side air-
bag indicator)
5 –
– Humidity sensor
518
An authorized Volvo workshop is recommended.

||MAINTENANCE AND SERVICE
* Option/accessory.
628 Function
AA Door module in right-side rear door 20
Fuses in the trunk/cargo compart-
ment
10Control module for Internet-con-
nected vehicle; Control module for
Volvo On Call
5Door module in left-side rear door 20
Audio control module (amplifier)
(certain models only)
40Climate system blower module
(rear)*
40Multi-band antenna module 5
Front seat massage function*
5–
–Rear window wiper
15Fuel pump control module
15Relay windings for distribution box
in engine compartment; Relay
windings for transmission oil pump
5–
– Function
AA Driver's seat heating
15 Front passenger's seat heating 15
Coolant pump
10 –
– Door module in left-side front door 20
Active chassis control module*
20 –
– Sensus control module
10 –
– –
– Door module in right-side front
door
20 Display for rear seat convenience
functions
C
; On-board diagnostics
(OBD II) in tunnel console between
rear seats C
; Extra movement sen-
sor C 5
C Function
AA TV* (certain markets only)
5 Primary fuse for fuses 53 and 58 15
A
Ampere
B Not Excellence
C Excellence
Related information
• Fuses and fuseboxes (p. 620)
• Replacing fuses (p. 621)