2018 VOLVO XC90 TWIN ENGINE maintenance

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616
CAUTION
Only a modern battery charger with controlled
charge voltage should be used to charge the
starter battery. The rapid charging function
should not be used as this could damage the
battery.
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.
CAUTION Failure to observe the following could cause
the infotainment energy save mode to tempo-
rarily stop working and/or a message in the
driver's display regarding the state of charge
of the starter battery may be temporarily
incorrect after an external starter battery or
battery charger has been connected:
• The negative battery terminal of the vehi-
cle's starter battery must never be used
to connect an external starter battery or
battery charger – only the vehicle's neg-
ative charging point should be used as
a grounding point.NOTE If the starter battery becomes discharged too
many times, it will shorten its service life.
The service life of the starter battery is affec-
ted by several factors, such as driving condi-
tions and climate. The starting capacity of the
battery reduces gradually over time. The bat-
tery must therefore be recharged if the vehi-
cle is not used or a long period of time or if it
is only driven short distances. Severe cold fur-
ther limits the starting capacity.
To keep the starter battery in a good condi-
tion, the vehicle should be driven at least
15 minutes per week or the battery should be
connected to a battery charger with automatic
trickle charging.
A starter battery that is always kept fully
charged has the maximum service life.

MAINTENANCE AND SERVICE
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617
Location The start battery is located in the cargo compartment.WARNING If the starter battery is disconnected, the func-
tion for automatic opening and closing must
be reset to function correctly. A reset is
required in order for the pinch protection to
work.
CAUTION
On certain models, the battery is secured with
a tensioning strap. Make sure that the ten-
sioning strap is always securely tightened.
Specifications
Battery
H8 AGM
Voltage (V) 12
Cold start capacity A
- CCA B
(A) 850
Dimensions, L×W×H 353×175×190 mm (13.9×6.9×7.5 inches)
Capacity (Ah) 95A
According to EN standard.
B Cold Cranking Amperes.
Volvo recommends that batteries are replaced by
an authorized Volvo workshop. 16
Absorbed Glass Mat.

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618
CAUTION
When replacing the starter battery, an AGM
16
battery must be installed.
CAUTION If replacing the starter battery, make sure you
replace it with a battery with the same cold
start capacity and type as the original battery
(see the decal on the battery).
NOTE
The size of the starter battery should conform
to the dimensions of the original battery.
Related information
•
Battery symbols (p. 620)
• Hybrid battery (p. 619)
• Jump starting using another battery (p. 469)

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
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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.