Volvo XC40 Recharge Plug-in Hybrid (2021 year). Manual in english - page 35

MAINTENANCE AND SERVICE

604

Coolant

The coolant ensures that surplus heat is dis-
tributed in the circuit, e.g. in order to heat the
starter battery or provide heat for the passen-
ger compartment.

Only coolant approved by Volvo should be
used in order to prevent impairment of the
cooling system, engine problems, etc.

Prescribed grade:

 Ready-mixed coolant

approved by Volvo. If concentrated coolant is
used, mix with 50% water (of approved water
quality, not salt water, etc.). Consult a Volvo
dealer if unsure.

Only coolant approved by Volvo should be
used in order to prevent impairment of the
cooling system, engine problems, etc.

WARNING

Swallowing coolant is hazardous, it may

cause damage to organs (kidneys). The

product contains ethylene glycol, inhibitor,

water, etc.

Related information

•

Topping up coolant (p. 604)

Topping up coolant

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.

Coolant expansion tank

–

Screw off the cap and top up with coolant
if necessary. The coolant level must not
exceed the 

MAX

 mark outside the expan-

sion tank.

MAINTENANCE AND SERVICE

605

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. 600)

•

Coolant (p. 604)

MAINTENANCE AND SERVICE

606

Starter battery

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 electrical system is single-pole and uses
the chassis and engine casing as a conductor.

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.

The service life and capacity of the
starter battery

The service life of the battery is affected by
several factors, including factors such as the
number of starts, discharging, driving style,
driving conditions, climatic conditions, etc.
Battery starting capacity decreases gradually
with time and therefore needs to be recharged
if the car is not used for a long time or when it
is only driven short distances. Extreme cold
further limits starting capacity. If the starter

battery is discharged a large number of times,
it will negatively affect the service life.

In order to maintain the starter battery in good
condition, it is recommended that there is at
least 15 minutes driving/week or that the bat-
tery is connected to a battery charger with
automatic trickle charging. A starter battery
that is kept fully charged has a maximum serv-
ice life.

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.

MAINTENANCE AND SERVICE

607

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

H7 AGM

Voltage (V)

12

Cold start capacity

A

 - CCA

B

 (A)

800

Size, L×B×H

315×175×190 mm (12.4×6.9×7.5 inches)

Capacity (Ah)

80

A

According to EN standard.

B

Cold Cranking Amperes.

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

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. 608)

•

Hybrid battery (p. 608)

•

Using jump starting with another battery
(p. 468)

•

Reset sequence for pinch protection
(p. 157)

•

Battery recycle (p. 609)

MAINTENANCE AND SERVICE

608

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.

If both the starter battery and the hybrid bat-
tery are discharged then both batteries must
be charged. In such a case, charging only the
hybrid battery is not possible. In order for the
hybrid battery to be charged, the starter bat-
tery 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.

The service life and capacity of the
hybrid battery

The capacity of the hybrid battery diminishes
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.

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:

 10.9 kWh.

Related information

•

Symbols on the batteries (p. 608)

•

Starter battery (p. 606)

•

Charging the hybrid battery (p. 409)

•

Battery recycle (p. 609)

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.

MAINTENANCE AND SERVICE

}}

609

Avoid sparks and naked

flames.

Risk of explosion.

Must be taken for recy-

cling.

Related information

•

Starter battery (p. 606)

•

Hybrid battery (p. 608)

•

Battery recycle (p. 609)

Battery recycle

A used starter battery must be recycled in an
environmentally sound manner.

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. 606)

•

Hybrid battery (p. 608)

•

Symbols on the batteries (p. 608)

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.

||

MAINTENANCE AND SERVICE

610

Location of central electrical units

Engine compartment

Under the left-hand front seat

Related information

•

Replacing a fuse (p. 610)

•

Fuses in engine compartment (p. 611)

•

Fuses under the left-hand front seat
(p. 617)

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. 609)

•

Fuses in engine compartment (p. 611)

•

Fuses under the left-hand front seat
(p. 617)

MAINTENANCE AND SERVICE

}}

611

Fuses in engine compartment

Fuses in the engine compartment protect
engine and brake functions, amongst other
things.

||

MAINTENANCE AND SERVICE

* Option/accessory.

612

On the inside of the cover there are tweezers
that facilitate the procedure for the removal
and fitting of fuses.

The fuse box also provides space for several
spare fuses.

Positions

On the inside of the cover is a label that shows
the location of the fuses.

Function

Ampere

Type

USB port, tunnel console, rear

*

5

Micro

Double USB ports, tunnel console, rear

*

7,5

Micro

12 V socket in tunnel console, front

15

Micro

–

–

Micro

12 V socket in cargo area

*

15

Micro

Engine Control Module (ECM)

20

Micro

Ignition coils; Spark plugs

15

Micro

Solenoids (petrol); Valve; Thermostat for engine cooling system (petrol); EGR cooling pump (diesel); Glow control mod-
ule (diesel)

Engine Control Module (ECM)

15

Micro

Solenoids (petrol); Valve; Thermostat for engine cooling system (petrol); Cooling pump for EGR (diesel); Glow control
module (diesel); Vacuum regulators; Valve; Valve for output pulse (diesel)

Valves for cooling

A

10

15

A

Micro

Lambda probe, centre (petrol); Lambda probe, rear (diesel)

15

Micro

Sensor for nitrous oxides (diesel); Engine Control Module (ECM)

15

Micro

Coolant pump

20

Micro

MAINTENANCE AND SERVICE

}}

* Option/accessory.

613

Function

Ampere

Type

Right-hand headlamp

20

Micro

Left-hand headlamp

20

Micro

Airbags

5

Micro

Accelerator pedal sensor

5

Micro

Supplied when the ignition is switched on: Engine control module; Transmission components; Electric steering servo;
Central electronic module; Control module for brake system

5

Micro

Exterior audio module

OBD-II firewall

5

Micro

Alcohol lock

*

5

Micro

–

–

Micro

Internal relay coils

5

Micro

–

–

Micro

Sensor for brake pedal

5

Micro

Calculation unit

5

Micro

Control module for actuator for engagement/change of automatic gearbox gear positions

5

Micro

Hydraulic clutch control unit

25

Micro

Transmission control module

15

Micro

Hydraulic clutch control unit

25

Micro

||

MAINTENANCE AND SERVICE

* Option/accessory.

614

Function

Ampere

Type

Engine Control Module (ECM)

5

Micro

Charging unit (OBC)

5

Micro

High voltage battery; Inverter generator

5

Micro

Horn

20

Micro

Siren

*

5

Micro

Windscreen wipers

30

MCase

B

Control module for brake system (valves, parking brake)

40

MCase

B

Control unit for brake system (ABS pump)

40

MCase

B

Brake booster

40

MCase

B

Actuator for transmission

30

MCase

B

Actuator for transmission

30

MCase

B

–

–

–

Right-hand headlamp; Left-hand headlamp

30

MCase

B

–

–

MCase

B

Start relay

30

MCase

B

Towbar control module

*

25

MCase

B

Towbar control module

*

40

MCase

B

MAINTENANCE AND SERVICE

}}

* Option/accessory.

615

Function

Ampere

Type

–

–

MCase

B

Power driver seat

*

20

MCase

B

–

–

MCase

B

–

–

Micro

Air conditioning

5

Micro

High voltage battery; Inverter generator

5

Micro

Shut-off valve for the hybrid battery's coolant; Coolant pump 1 for hybrid battery

15

Micro

Coolant pump for electric drive system

15

Micro

Fuel filter heater (diesel)

30

MCase

B

Heated windscreen

*

 right-hand side

40

MCase

B

Heated windscreen

*

 left-hand side

40

MCase

B

Control function for support battery

5

Micro

Left-hand headlamp

20

Micro

Right-hand headlamp

20

Micro

A

Applies to petrol engines, generation 3 (VEP4_G3).

B

This type of fuse should be replaced by a workshop. An authorised Volvo workshop is recommended.

||

MAINTENANCE AND SERVICE

616

Related information

•

Fuses and central electrical units (p. 609)

•

Replacing a fuse (p. 610)

MAINTENANCE AND SERVICE

}}

617

Fuses under the left-hand front

seat

Fuses under the left-hand front seat protect,
amongst other things, electrical sockets, dis-
plays and door modules.

||

MAINTENANCE AND SERVICE

618

The 

fuse box in the engine compartment

provides space for several spare fuses. On the
inside of the cover there are tweezers that

facilitate the procedure for the removal and fit-
ting of fuses.

Positions

On the inside of the cover is a label that shows
the location of the fuses.

MAINTENANCE AND SERVICE

}}

* Option/accessory.

619

Function

Ampere

Type

Audio control device (amplifier)

A

40

MCase

B

Central Electric Module A: Sensors, radar units, power seats

*

40

MCase

B

Central Electric Module B: Sensors, radar units, power seats

*

40

MCase

B

Fan module for climate control system, front

40

MCase

B

Power operated tailgate

*

25

MCase

B

Power seat

*

, right

20

MCase

B

Parking heater

*

25

MCase

B

Control module for reduction of nitrous oxides (diesel)

30

MCase

B

Door module in right-hand rear door

20

Micro

Door module in left-hand rear door

20

Micro

Door module in left-hand front door

20

Micro

–

–

Micro

Door module in right-hand front door

20

Micro

Seat heating, rear

*

15

Micro

The fuel tank's insulation valve; Intermediate voltage module

5

Micro

Calculation module

5

Micro

Sun sensor

5

Micro