Volvo S90 Twin Engine (2020 year). Manual in english - page 36

MAINTENANCE AND SERVICE

615

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. 616)

•

Starter battery (p. 611)

•

Charging the hybrid battery (p. 413)

•

Battery recycle (p. 616)

MAINTENANCE AND SERVICE

616

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. 611)

•

Hybrid battery (p. 615)

•

Battery recycle (p. 616)

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. 611)

•

Hybrid battery (p. 615)

•

Symbols on the batteries (p. 616)

MAINTENANCE AND SERVICE

}}

617

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. 617)

•

Fuses in cargo area (p. 631)

•

Fuses in engine compartment (p. 619)

•

Fuses under glovebox (p. 626)

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. 617)

•

Fuses in cargo area (p. 631)

||

MAINTENANCE AND SERVICE

618

•

Fuses in engine compartment (p. 619)

•

Fuses under glovebox (p. 626)

MAINTENANCE AND SERVICE

}}

619

Fuses in engine compartment

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

||

MAINTENANCE AND SERVICE

620

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

–

–

Micro

–

–

Micro

–

–

Micro

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

5

Micro

Control module for the high-voltage heater of the internal combustion engine's coolant

5

Micro

Control module for air conditioning; Shut-off valve for heat exchanger; Shut-off valve for coolant that passes through the
climate control system

5

Micro

Control module for hybrid battery; High voltage converter for combined high-voltage generator/starter motor with volt-
age converter 500 V-12 V

5

Micro

–

–

Micro

Converter for control of the supply to the rear axle's electric motor

10

Micro

Control module for hybrid battery; High voltage converter for combined high-voltage generator/starter motor with volt-
age converter 500 V-12 V

10

Micro

Charging unit

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

MAINTENANCE AND SERVICE

}}

* Option/accessory.

621

Function

Ampere

Type

Cooling fan for hybrid components

25

MCase

A

–

–

MCase

–

–

MCase

–

–

MCase

Calculation unit

5

Micro

–

–

Micro

–

–

Micro

–

–

Micro

–

–

Micro

–

–

Micro

12 V socket in tunnel console, front

15

Micro

12 V socket in tunnel console, by legroom for second seat row

15

Micro

12 V socket in cargo area

*

USB ports in head restraints right/left

15

Micro

–

–

Micro

Left-hand headlamp, LED

B

15

Micro

Right-hand headlamp, LED

15

Micro

||

MAINTENANCE AND SERVICE

* Option/accessory.

622

Function

Ampere

Type

–

–

Micro

Heated windscreen

*

 left-hand side

Shunt

MCase

Heated windscreen

*

 left-hand side

40

MCase

Headlamp washers

*

25

MCase

Windscreen washers

25

MCase

–

–

Micro

Horn

20

Micro

Siren

*

5

Micro

Control module for brake system (valves, parking brake)

40

MCase

Windscreen wipers

30

MCase

–

–

MCase

Heated windscreen

*

 right-hand side

40

MCase

Parking heater

*

20

MCase

Control unit for brake system (ABS pump)

40

MCase

–

–

MCase

Heated windscreen

*

 right-hand side

Shunt

MCase

MAINTENANCE AND SERVICE

}}

* Option/accessory.

623

Function

Ampere

Type

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

5

Micro

Exterior car noise (certain markets)

5

Micro

Right-hand headlamp, LED

15

Micro

Alcohol lock

*

5

Micro

–

–

Micro

–

–

Micro

Airbags; Passenger weight sensor

5

Micro

Left-hand headlamp, LED

15

Micro

Accelerator pedal sensor

5

Micro

Transmission control module; Control module for gear selector

15

Micro

Engine Control Module (ECM)

5

Micro

–

–

Micro

–

–

Micro

–

–

Micro

–

–

Micro

Engine control module; Actuator; Throttle unit; Valve for turbocharger

20

Micro

||

MAINTENANCE AND SERVICE

624

Function

Ampere

Type

Solenoids; Valves; Overpressure connection

10

Micro

Vacuum regulators; Valve for electric bypass: Valve for ventilation

7,5

Micro

Control unit, spoiler damper; Control unit, radiator damper

5

Micro

–

–

Micro

Lambda probe, front and rear

15

Micro

Solenoid for engine oil pump; Solenoid clutch A/C; Lambda probe, front, centre and rear

15

Micro

–

–

Micro

Engine Control Module (ECM)

20

Micro

Ignition coils; Spark plugs

15

Micro

–

–

MCase

–

–

MCase

Control module for transmission fluid pump

30

MCase

–

–

MCase

Actuator for transmission

25

MCase

–

–

MCase

MAINTENANCE AND SERVICE

625

Function

Ampere

Type

–

–

MCase

–

–

MCase

A

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

B

LED (Light Emitting Diode)

Related information

•

Fuses and central electrical units (p. 617)

•

Replacing a fuse (p. 617)

MAINTENANCE AND SERVICE

626

Fuses under glovebox

Fuses under the glovebox protect, amongst
other things, electrical sockets, displays and
door modules.

MAINTENANCE AND SERVICE

}}

* Option/accessory.

627

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

The 

fuse box in the engine compartment

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

Intermediate voltage module

10

Micro

–

–

MCase

A

–

–

Micro

Movement detector

*

5

Micro

Media player

5

Micro

Driver display

5

Micro

Keypad in centre console

5

Micro

Sun sensor

5

Micro

–

–

Micro

–

–

Micro

Steering wheel module

5

Micro

Module for start knob and for parking brake control

5

Micro

Steering wheel module for heated steering wheel

*

15

Micro

–

–

Micro

||

MAINTENANCE AND SERVICE

* Option/accessory.

628

Function

Ampere

Type

–

–

Micro

–

–

Micro

–

–

Micro

Control module for climate control system

10

Micro

Steering lock

7,5

Micro

Diagnostic socket OBDII

10

Micro

Centre display

5

Micro

Fan module for climate control system, front

40

MCase

A

USB HUB

5

Micro

Controls lighting; Interior lighting; Dimming of interior rearview mirror

*

; Rain and light sensor

*

; Keypad in tunnel con-

sole, by legroom for rear seat

*

; Power front seats

*

; Control panels in rear doors; Fan module for climate control left/right

7,5

Micro

Control module for driver support functions

5

Micro

Sunroof

*

20

Micro

Head-up display

*

5

Micro

Passenger compartment lighting

5

Micro

–

–

Micro

Display in roof console (Seatbelt reminder/Indicator for airbag on the front passenger seat)

5

Micro

MAINTENANCE AND SERVICE

}}

* Option/accessory.

629

Function

Ampere

Type

–

–

Micro

Micro

–

–

Micro

Fuses in cargo area

10

Micro

Control module for online car; Control module for Volvo On Call

5

Micro

–

20

–

Micro

Audio control device (amplifier)

40

MCase

A

–

–

MCase

A

Module for multi-band antenna

5

Micro

Modules for seat comfort (massage) front

*

5

Micro

Alcohol lock

*

5

Micro

–

–

Micro

Control module for fuel pump

15

Micro

Relay coils in fuse box in engine compartment; Relay coil for transmission oil pump; Medium voltage converter; Inte-
grated dynamo.

5

Micro

Opening the boot lid/tailgate with foot motion

*

5

Micro

Seat heating, driver's side front

15

Micro

||

MAINTENANCE AND SERVICE

* Option/accessory.

630

Function

Ampere

Type

Seat heating, passenger side front

15

Micro

Coolant pump

7,5

Micro

–

–

Micro

Power driver's seat

*

20

Micro

Control module for suspension (active chassis)

*

20

Micro

–

–

Micro

Sensus control module

10

Micro

–

–

MCase

A

–

–

Micro

Electrically operated front passenger seat

*

20

Micro

–

–

Micro

TV

*

 (certain markets)

5

Micro

Primary fuse for fuses 52, 53, 57 and 58

15

Micro

A

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

Related information

•

Fuses and central electrical units (p. 617)

•

Replacing a fuse (p. 617)