Volvo XC90 Twin Engine (2020 year). Manual in english - page 37

MAINTENANCE AND SERVICE

* Option/accessory.

637

Servicing the climate control

system

The air conditioning system must only be
serviced and repaired by an authorised work-
shop.

Troubleshooting and repair

The air conditioning system contains fluores-
cent tracing agents. Ultraviolet light must be
used during leak detection.

Volvo recommends that an authorised Volvo
workshop is contacted.

Cars with R134a refrigerant

WARNING

The air conditioning system contains pres-

surised refrigerant R134a. This system

must only be serviced and repaired by an

authorised workshop.

Cars with R1234yf refrigerant

WARNING

The air conditioning system contains pres-

surised refrigerant R1234yf. In accordance

with SAE J2845 (Technician Training for

Safe Service and Containment of Refriger-

ants Used in Mobile A/C System), service

and repair of the refrigerant system must

only be performed by trained and certified

technicians in order to ensure the safety of

the system.

Related information

•

Volvo service programme (p. 630)

Head up display when replacing

the windscreen

*

Cars with head-up display are equipped with
a special type of windscreen that meets the
requirements for displaying the projected
image.

Volvo recommends that you contact an
authorised Volvo workshop when replacing
the windscreen. The correct version of the
windscreen must be fitted in order that the
head-up display's graphics shall be displayed
correctly.

Related information

•

Head-up display

*

 (p. 148)

•

Cleaning the head up display

*

 (p. 672)

MAINTENANCE AND SERVICE

638

Opening and closing the bonnet

The bonnet can be opened using the handle
in the passenger compartment and a handle
under the bonnet.

Open the bonnet

Pull the handle near the foot pedals to
release the bonnet from its fully closed
position.

Turn the handle under the bonnet anti-
clockwise to release the bonnet from the
lock catches and lift the bonnet.

Warning - bonnet not closed

When the bonnet is released, a
warning symbol and graphics in the
driver display will light up and an
acoustic reminder will sound. If the

car starts rolling, an acoustic warning signal
will repeat.

NOTE

If the warning symbol is lit or the warning
signal is heard despite the bonnet being
closed properly, contact an authorised
Volvo workshop.

Close the bonnet

1. Push the bonnet down until it starts to fall

from its own weight.

2. When the bonnet stops against the lock

catch, push the bonnet to close it com-
pletely.

WARNING

Risk of crushing! Ensure that the closing

path under the bonnet is not obstructed,

otherwise there is a risk of personal injury.

WARNING

Check that the bonnet locks properly when

closed. The bonnet must engage at both

sides audibly.

Bonnet not completely closed.

MAINTENANCE AND SERVICE

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639

Bonnet completely closed.

WARNING

Never drive with an open

bonnet!
If this symbol is visible –

or something else indi-

cates that the bonnet is

not fully closed while driv-

ing – stop immediately

and close it properly.

Related information

•

Engine compartment overview (p. 639)

•

Door and seatbelt reminder (p. 50)

Engine compartment overview

The overview shows some service-related
components.

Some of the components included in the car's
electric drive system are located under the
bonnet. Exercise caution in this area and only
touch anything that is related to normal main-
tenance.

WARNING

Orange-coloured cables must only be han-

dled by qualified personnel.

WARNING

Several components in the car work with

high-voltage current that could be danger-

ous in the event of incorrect intervention.

•

Do not touch anything that is not
clearly described in the owner's man-
ual.

•

Exercise caution when checking/refill-
ing fluids in the engine compartment.

The appearance of the engine compartment may dif-

fer depending on model and engine variant.

Coolant expansion tank

Reservoir for brake fluid (located on the
driver's side)
Washer fluid filler pipe

12

Central electrical unit

Air filter

Engine oil filler pipe

12

Fill the washer fluid at regular intervals, e.g. when refuelling.

||

MAINTENANCE AND SERVICE

640

WARNING

Remember that the radiator fan (located at

the front of the engine compartment,

behind the radiator) may start or continue

to operate automatically for up to approx.

6 minutes after the engine has been

switched off.
Always have the engine cleaned by a work-

shop - an authorised Volvo workshop is

recommended. There is a risk of fire if the

engine is hot.

WARNING

The ignition system works at a very high

and hazardous voltage. The car's electrical

system must always be in ignition position

0

 when work is being performed in the

engine compartment.
Do not touch the spark plugs or ignition

coil when the car's electrical system is in

ignition position 

II

 or when the engine is

hot.

Related information

•

Opening and closing the bonnet (p. 638)

•

Filling washer fluid (p. 687)

•

Topping up coolant (p. 642)

•

Fuses in engine compartment (p. 653)

•

Checking and filling with engine oil
(p. 641)

•

Ignition positions (p. 458)

Engine oil

An approved engine oil must be used in order
that the recommended service intervals and
warranty can be applied.

Volvo recommends:

If the engine oil cannot be checked on a regu-
lar basis and the level falls too low, there is a
risk that this will cause serious damage to the
engine.

IMPORTANT

In order to fulfil the requirements for the
engine's service intervals all engines are
filled with a specially adapted synthetic
engine oil at the factory. The choice of oil
has been made very carefully with regard
to service life, starting characteristics, fuel
consumption and environmental impact.

An approved engine oil must be used in
order that the recommended service inter-
vals can be applied. Only use a prescribed
grade of oil for both filling and oil change,
otherwise there is a risk of the service life,
starting characteristics, fuel consumption
and environmental impact of the car being
affected.

If engine oil of the prescribed grade and
viscosity is not used, engine related com-
ponents may become damaged. Volvo Car
Corporation disclaims any liability for any
such damage.

Volvo recommends that oil changes are
carried out at an authorised Volvo work-
shop.

MAINTENANCE AND SERVICE

}}

641

Volvo uses different systems to warn about
the oil level if it is too low/high, or in the event
of low oil pressure. Certain engine variants
have an oil pressure sensor, and then the
driver display's warning symbol for low oil
pressure 

 is used. Other variants have an

oil level sensor, when the driver is informed via
the driver display's warning symbol 

 and

display texts. Certain variants have both sys-
tems. Contact a Volvo dealer for more infor-
mation.

Change the engine oil and oil filter in accord-
ance with the intervals specified in the Service
and Warranty Booklet. Using oil of a higher
than specified grade is permitted. If the car is
driven in adverse conditions, Volvo recom-
mends using an oil of a higher grade than the
one specified.

Related information

•

Checking and filling with engine oil
(p. 641)

•

Engine oil — specifications (p. 699)

•

Adverse driving conditions for engine oil
(p. 700)

Checking and filling with engine oil

The oil level is detected with the electronic oil
level sensor.

Filler pipe.

13

,

14

In some cases, oil may need to be topped up
between service intervals.

No action with regard to engine oil level needs
to be taken until a message is shown in the
driver display.

WARNING

If this symbol is shown together

with the message 

Engine oil

level

 

Service required

, visit a

workshop - an authorised Volvo

workshop is recommended. The oil level

may be too high.

IMPORTANT

If this symbol is shown together
with a message about low oil
level, such as 

Engine oil level

low

 

Refill 1 litre

 for example,

then only fill the volume specified, e.g.
1 litre (1 quart).

WARNING

Do not spill oil onto the hot exhaust mani-

fold due to the risk of fire.

See oil level in the centre display

The oil level is visualised using the electronic
oil level gauge in the centre display when the
car has been started. The oil level should be
checked regularly.

13

Engines with electronic oil level sensor do not have a dipstick.

14

The appearance of the engine compartment may differ depending on model and engine variant.

||

MAINTENANCE AND SERVICE

642

1. Open the 

Car Status

 app from the app

view in the centre display.

2. Press 

Status

 to show the oil level.

Graphics for oil level in the centre display.

NOTE

The system cannot directly detect changes
when the oil is filled or drained. The car
must have been driven approx. 30 km
(approx. 20 miles) and have been station-
ary for 5 minutes with the engine switched
off and on level ground before the oil level
indication is correct.

NOTE

If the right conditions for measuring the oil
level (time after engine shutdown, the car's
inclination, outside temperature, etc.) are
not met, then the message 

No value

available

 will be shown in the centre dis-

play. This does 

not

 mean that there is

something wrong in the car's systems.

Related information

•

Engine oil (p. 640)

•

Adverse driving conditions for engine oil
(p. 700)

•

Engine oil — specifications (p. 699)

•

Ignition positions (p. 458)

•

Car status (p. 632)

Topping up coolant

The coolant cools the internal combustion
engine to the correct operating temperature.
The heat that is transferred from the engine
to the coolant can be used to heat the pas-
senger compartment.

When topping up the coolant, follow the
instructions on the packaging. Never top up
with water only. The risk of freezing increases
with both too little and too much coolant con-
centrate.

If there is coolant under the car, if there is
coolant smoke, or if more than 2 litres (approx.
2 quarts) have been filled, always call for
recovery to avoid the risk of engine damage
due to a defective cooling system when
attempting to start the car.

WARNING

The coolant may be very hot. Never open

the cap when the coolant is hot. If a top-up

is required, unscrew the expansion tank

cap slowly to allow any overpressure to

disappear.

MAINTENANCE AND SERVICE

643

Coolant expansion tank.

Lift off the rubber strip by pressing it
inward in the engine compartment.

Detach the flap in the plastic cover by
folding out the release catch and turning
the flap upward.

Screw off the cap and top up with coolant
if necessary. The coolant level must lie
between the 

MIN

 and 

MAX

 marks on the

expansion tank.

IMPORTANT

•

Harmful if ingested. May cause organ
(kidney) damage.

•

Use ready-mixed coolant as recom-
mended by Volvo. If concentrated liq-
uid is used, make sure that the ratio is
50 % coolant to 50 % water of an
approved quality.

•

Do not mix different coolants.

•

Only new coolant should be used
when replacing major cooling system
components to ensure the system has
sufficient corrosion protection.

•

The engine must only be run with a
well-filled cooling system. Otherwise,
temperatures that are too high may
occur resulting in the risk of damage
(cracks) in the cylinder head.

•

A high content of chlorine, chlorides
and other salts may cause corrosion in
the cooling system.

Related information

•

Engine compartment overview (p. 639)

•

Coolant — specifications (p. 701)

MAINTENANCE AND SERVICE

644

Bulb replacement

This car is equipped only with LED

16

 lamps

and therefore no replaceable bulbs. Contact a
workshop

15

 if a fault occurs in the lighting.

If a fault occurs in LED

16

 lamps, the entire

lamp unit usually must be replaced.

NOTE

NOTE

Outside lighting such as headlamps and
rear lamps may temporarily have conden-
sation on the inside of the lens. This is nor-
mal, all exterior lighting is designed to
withstand this. Condensation is normally
vented out of the lamp housing when the
lamp has been switched on for a time.

16

LED (Light Emitting Diode)

15

An authorised Volvo workshop is recommended.

MAINTENANCE AND SERVICE

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645

Starter battery

The electrical system is single-pole and uses
the chassis and engine casing as a conduc-
tor.

The starter battery is used to start up the
electrical system and drive electrical equip-
ment in the car. The hybrid battery is used
when the internal combustion engine is
started.

The starter battery should be replaced by a
workshop

17

.

The starter battery is a 12 V AGM battery
(Absorbed Glass Mat), designed for regenera-
tive charging, and to support the functionality
of the car's different systems.

The service life and function of the starter bat-
tery is influenced by factors such as the num-
ber of starts, discharging, driving style, driving
conditions, climatic conditions etc.

•

Never disconnect the starter battery when
the engine is running.

•

Check that the cables to the starter bat-
tery are correctly connected and properly
tightened.

WARNING

•

The battery can generate oxyhydrogen
gas, which is highly explosive. A spark
can be formed if a jump lead is con-
nected incorrectly, and this can be
enough for the battery to explode.

•

Do not connect the jump leads to any
fuel system component or any moving
part. Be careful of hot engine parts.

•

The battery contains sulphuric acid,
which can cause serious burns.

•

If sulphuric acid comes into contact
with eyes, skin or clothing, flush with
large quantities of water. If acid
splashes into the eyes - seek medical
attention immediately.

•

Never smoke near the battery.

Charging points

When connecting an external starter battery or
battery charger, use the car's charging points
in the engine compartment.

The battery terminals on the car's starter bat-
tery in the luggage/cargo area must 

not

 be

used.

Positive charging point

Negative charging point

IMPORTANT

It is not possible to charge another car's
battery by supplying current through the
charging points. Using the charging points
to charge another car's battery may cause
a fuse to blow, which means that the
charging points will stop working.

17

An authorised Volvo workshop is recommended.

||

MAINTENANCE AND SERVICE

646

IMPORTANT

When charging the starter battery, only use
a modern battery charger with controlled
charging voltage. Fast charging function
must not be used since it may damage the
battery.

NOTE

If both the starter battery and the hybrid
battery are discharged then 

both

 batteries

must be charged. In such a case, charging
only the hybrid battery first is not possible.

In order for the hybrid battery to be
charged the starter battery must have a
certain state of charge.

IMPORTANT

If the following instruction is not observed
then the energy saving function for info-
tainment may be temporarily disengaged,
and/or the message in the driver display
about the starter battery's state of charge
may be temporarily inapplicable, following
the connection of an external starter bat-
tery or battery charger:

•

The negative battery terminal on the
car's starter battery must 

never

 be

used for connecting an external starter
battery or battery charger - only the

car's negative charging point

 may be

used as the grounding point.

NOTE

The life of the battery is shortened if it
becomes discharged repeatedly.

The life of the battery is affected by several
factors, including driving conditions and
climate. Battery starting capacity decrea-
ses gradually with time and therefore
needs to be recharged if the car is not used
for a longer time or when it is only driven
short distances. Extreme cold further limits
starting capacity.

To maintain the battery in good condition,
at least 15 minutes of driving/week is rec-
ommended or that the battery is con-
nected to a battery charger with automatic
trickle charging.

A battery that is kept fully charged has a
maximum service life.

MAINTENANCE AND SERVICE

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647

Location

The starter battery is located in the cargo area.

WARNING

If the starter battery is disconnected, the

automatic opening and closing function

must be reset to work properly. A reset

must take place for pinch protection to

work.

IMPORTANT

On certain models, the battery is attached
with a retaining strap. Make sure the
retaining strap is properly tightened.

Specifications for starter battery

Battery type

H8 AGM

Voltage (V)

12

Cold start capacity

A

 - CCA

B

 (A)

850

Size, L×B×H

353×175×190 mm (13.9×6.9×7.5 inches)

Capacity (Ah)

95

A

According to EN standard.

B

Cold Cranking Amperes.

Volvo recommends entrusting battery replace-
ment to an authorised Volvo workshop.

||

MAINTENANCE AND SERVICE

648

IMPORTANT

If the battery is replaced, make sure you
replace it with a battery with the same
size, cold starting capacity and type as the
original battery (see the decal on the bat-
tery).

Related information

•

Symbols on the batteries (p. 650)

•

Hybrid battery (p. 649)

•

Using jump starting with another battery
(p. 504)

•

Reset sequence for pinch protection
(p. 175)

•

Battery recycle (p. 650)

MAINTENANCE AND SERVICE

649

Hybrid battery

The car is equipped with a hybrid battery for
electric motor operation - a maintenance-free
rechargeable Lithium-ion type battery.

NOTE

The car cannot be started if the hybrid bat-
tery is discharged.

NOTE

If both the starter battery and the hybrid
battery are discharged then 

both

 batteries

must be charged. In such a case, charging
only the hybrid battery first is not possible.

In order for the hybrid battery to be
charged the starter battery must have a
certain state of charge.

WARNING

The hybrid battery must only be replaced

by a workshop - an authorised Volvo work-

shop is recommended.

Coolant

The hybrid battery's cooling system has a sep-
arate expansion tank.

IMPORTANT

The hybrid battery's coolant must only be
topped up by a workshop - an authorised
Volvo workshop is recommended.

Specifications for hybrid battery

Type:

 Lithium-ion

Total amount of energy:

 11.6 kWh.

NOTE

The capacity of the hybrid battery dimin-
ishes with age and use, which may result
in increased use of the internal combustion
engine and, as a consequence, reduced
fuel economy and reduced range during
electric operation.

Related information

•

Symbols on the batteries (p. 650)

•

Starter battery (p. 645)

•

Charging the hybrid battery (p. 435)

•

Battery recycle (p. 650)

MAINTENANCE AND SERVICE

650

Symbols on the batteries

There are information and warning symbols
on the batteries.

Use protective goggles.

Further information in the

owner's manual for the

car.

Store the battery out of

the reach of children.

The battery contains cor-

rosive acid.

Avoid sparks and naked

flames.

Risk of explosion.

Must be taken for recy-

cling.

Related information

•

Starter battery (p. 645)

•

Hybrid battery (p. 649)

•

Battery recycle (p. 650)

Battery recycle

A used starter battery should be recycled in
an environmentally sound manner – it con-
tains lead.

Consult a workshop in the event of uncertainty
about how this type of waste should be dis-
carded - an authorised Volvo workshop is rec-
ommended.

Related information

•

Starter battery (p. 645)

•

Hybrid battery (p. 649)

•

Symbols on the batteries (p. 650)

MAINTENANCE AND SERVICE

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651

Fuses and central electrical units

All electrical functions and components are
protected by a number of fuses in order to
protect the car's electrical system from dam-
age by short circuiting or overloading.

WARNING

Never use a foreign object or a fuse with an

amperage higher than that specified when

replacing a fuse. This could cause signifi-

cant damage to the electrical system and

possibly lead to fire.

WARNING

Orange-coloured cables must only be han-

dled by qualified personnel.

WARNING

Several components in the car work with

high-voltage current that could be danger-

ous in the event of incorrect intervention.
Do not touch anything that is not clearly

described in the owner's manual for the

car.

If an electrical component or function does not
work, it may be because the component's fuse
was temporarily overloaded and failed. If the
same fuse fails repeatedly then there is a fault
in the circuit. Volvo recommends contacting
an authorised Volvo workshop for checking.

Location of central electrical units

The figure is schematic - appearance may vary

depending on car model.

Central electrical unit locations in a left-hand
drive car. In a right-hand drive car the central
electrical units under the glovebox change
sides.

Engine compartment

Under the glovebox

Cargo area

Related information

•

Replacing a fuse (p. 651)

•

Fuses in cargo area (p. 666)

•

Fuses in engine compartment (p. 653)

•

Fuses under glovebox (p. 660)

Replacing a fuse

All electrical functions and components are
protected by a number of fuses in order to
protect the car's electrical system from dam-
age by short circuiting or overloading.

1. Look in the fuse diagram to locate the

fuse.

2. Pull out the fuse and check from the side

to see whether the curved wire has blown.

3. If this is the case, replace it with a new

fuse of the same colour and amperage.

WARNING

Never use a foreign object or a fuse with an

amperage higher than that specified when

replacing a fuse. This could cause signifi-

cant damage to the electrical system and

possibly lead to fire.

WARNING

Contact an authorised Volvo workshop

about the fuses not mentioned in the

owner's manual. If replacing the fuse is not

performed correctly, it can cause serious

damage to the electrical systems.

Related information

•

Fuses and central electrical units (p. 651)

•

Fuses in cargo area (p. 666)

||

MAINTENANCE AND SERVICE

652

•

Fuses in engine compartment (p. 653)

•

Fuses under glovebox (p. 660)