Volvo S90 Twin Engine (2019 year). Instruction — part 35

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MAINTENANCE AND SERVICE

* Option/accessory.

600

Unscrew the cover in the plastic covering.

Unscrew the expansion tank cap and fill
coolant as needed. The level should not
exceed the yellow MAX mark inside the
expansion tank.

Put the components back in place in the reverse
order.

CAUTION

•

Do not ingest the contents. May cause
damage to organs (kidneys).

•

Use premixed coolant according to Vol-
vo's recommendations. If concentrated
coolant is used, make sure that the cool-
ant mixture is 50% coolant and 50%
water of acceptable quality.

•

Do not mix different types of coolant.

•

To help ensure sufficient corrosion pro-
tection in the system, only use new cool-
ant when replacing larger components in
the cooling system.

•

Never run the engine unless the cooling
system is properly filled. An improperly
filled cooling system could lead to high
temperatures and cracks in the cylinder
heads.

•

High levels of chlorine, chlorides and
other salts may cause corrosion in the
cooling system.

Related information

•

Engine compartment overview (p. 596)

•

Coolant specifications (p. 647)

Replacing bulbs

Halogen headlights are not available on all mod-
els and markets. Contact a Volvo retailer for
more information.

LED

14

bulbs must be replaced by a workshop.

An authorized Volvo workshop is recommended.

NOTE

For information on lights not mentioned in
this article, contact a Volvo dealer or a certi-
fied Volvo service technician.

NOTE

Exterior lighting such as headlights and tail-
lights may develop temporary condensation
on the inside of the lens. This is normal. All
exterior lighting is designed to resist this.
Condensation is normally vented out of the
lamp housing once the light has been lit for
some period of time.

NOTE

Bulbs for active curve lighting* contain traces
of mercury and should therefore always be
submitted to a certified Volvo service techni-
cian.

MAINTENANCE AND SERVICE

}}

601

Start battery

The vehicle has a single-pole electrical system
that uses the chassis and engine mount as con-
ductors.

The start battery is used to start the electrical
system and power electrical equipment in the
vehicle. The hybrid battery is used to start the
combustion engine.

The start battery should only be replaced by a
workshop

15

.

The start battery is a 12 V AGM (Absorbed Glass
Mat) battery, dimensioned for regenerative charg-
ing and to support the function of the vehicle's
various systems.

The service life and performance of the start bat-
tery are affected by factors such as driving style,
driving conditions, climate, battery discharges,
number of starts, etc.

•

Never disconnect the start battery while the
engine is running.

•

Make sure the cables to the start battery are
correctly connected and the clamps are
securely tightened.

WARNING

•

Batteries generate hydrogen gas, which
is flammable and explosive.

•

Do not connect the jumper cable to any
part of the fuel system or to any moving
parts. Avoid touching hot manifolds.

•

Battery fluid contains sulfuric acid. Do not
allow battery fluid to contact eyes, skin,
fabrics or painted surfaces.

•

If contact occurs, flush the affected area
immediately with water. Obtain medical
help immediately if eyes are affected.

•

Never expose the battery to open flame
or electric spark. Do not smoke near the
battery. Failure to follow the instructions
for jump starting can lead to injury.

Connection points

WARNING

PROPOSITION 65 WARNING

Battery posts, terminals, and related accesso-

ries contain lead and lead compounds, chemi-

cals known to the state of California to cause

cancer and reproductive harm. Wash hands

after handling.

Use the vehicle's connection points in the engine
compartment to connect an external start battery
or battery charger.

The battery terminals on the car's start battery in
the luggage/cargo area must not be used.

Positive connection point

Negative connection point

14

LED (Light Emitting Diode)

15

An authorized Volvo workshop is recommended.

||

MAINTENANCE AND SERVICE

602

CAUTION

It is not possible to charge another vehicle's
battery by means of current through the
charging points. Using the charging points to
charge another vehicle's battery could cause
a fuse to blow, which would cause the charg-
ing points to stop working.

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

}}

603

Location

The start battery is located in the trunk.

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.

Specifications for start battery

Battery type

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)

95

A

According to EN standard.

B

Cold Cranking Amperes.

Volvo recommends that batteries are replaced by
an authorized Volvo workshop.

||

MAINTENANCE AND SERVICE

604

CAUTION

If replacing the battery, make sure you
replace it with a battery of the same size, cold
start capacity and type as the original battery
(see the decal on the battery).

Related information

•

Battery symbols (p. 606)

•

Hybrid battery (p. 605)

•

Jump starting using another battery (p. 466)

MAINTENANCE AND SERVICE

605

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.

Coolant

The 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.

Specifications for hybrid battery

Type: 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. 606)

•

Start battery (p. 601)

•

Charging the hybrid battery (p. 409)

MAINTENANCE AND SERVICE

606

Battery 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. 601)

•

Hybrid battery (p. 605)

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

607

Location of fuseboxes

The 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. 607)

•

Fuses in the trunk (p. 615)

•

Fuses in the engine compartment (p. 608)

•

Fuses under the glove compartment
(p. 612)

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. 606)

•

Fuses in the trunk (p. 615)

•

Fuses in the engine compartment (p. 608)

•

Fuses under the glove compartment
(p. 612)

MAINTENANCE AND SERVICE

608

Fuses in the engine compartment

The fuses in the engine compartment help pro-
tect electrical components such as engine and
brake functions.

MAINTENANCE AND SERVICE

}}

* Option/accessory.

609

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.

Positions

There 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

16

.

Function

Ampere

–

–

–

–

–

–

Control module for actuator
for engaging/changing gears,
automatic transmission

5

High-voltage coolant heater
control module

5

Function

Ampere

Control module for A/C; heat
exchanger cut-off valve; cut-
off valve for coolant through
the climate system

5

Hybrid battery control module;
high-voltage converter for
combined high-voltage gener-
ator/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
combined high-voltage gener-
ator/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

Ampere

Hybrid component cooling fan

25

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Front USB port in tunnel con-
sole, front*

5

12 V outlet in tunnel console,
front

15

12 V outlet in tunnel console
between second-row seats

A

12 V outlet in tunnel console,
between rear seats

B

; USB

ports in tunnel console
between rear seats

B

15

16

An authorized Volvo workshop is recommended.

||

MAINTENANCE AND SERVICE

* Option/accessory.

610

Function

Ampere

12 V outlet in trunk/cargo
compartment*

USB ports for iPad holders

15

–

–

–

–

–

–

–

–

Heated windshield*, left side

Shunt

Heated windshield*, left side

40

Headlight washers*

25

Windshield washer

25

–

–

Horn

20

Alarm siren*

5

Brake system control module
(valves, parking brake)

40

Wipers

30

–

–

Function

Ampere

Heated windshield*, right side

40

–

–

Brake system control module
(ABS pump)

40

–

–

Heated windshield*, right side

Shunt

Fed when ignition is on:
Engine control module; trans-
mission components, electrical
power steering, central electri-
cal module

5

Exterior vehicle sound (certain
markets)

5

Right-side headlight

7.5

Right-side headlight, some
models with LED

C

15

–

–

–

–

–

–

Airbags

5

Function

Ampere

Left-side headlight

7.5

Left-side headlight, some
models with LED

C

15

Accelerator pedal sensor

5

Transmission control module;
gear selector control module

15

Engine control module

5

–

–

–

–

–

–

–

–

Engine control module; actua-
tor; throttle unit; turbo-charger
valve

20

Solenoids; valve; engine cool-
ing system thermostat

10

Vacuum regulators; valve

7.5

Spoiler shutter control module;
radiator shutter control mod-
ule

5

–

–

MAINTENANCE AND SERVICE

611

Function

Ampere

Heated oxygen sensor, front;
heated oxygen sensor, rear

15

Oil pump solenoid; A/C mag-
netic coupling; heated oxygen
sensor (center)

15

–

–

Engine control module

20

Ignition coils; spark plugs

15

–

–

–

–

Transmission oil pump control
module

30

Vacuum pump control module

40

Transmission actuator

25

–

–

–

–

–

–

A

Not Excellence

B

Excellence

C

LED (Light Emitting Diode)

Related information

•

Fuses and fuseboxes (p. 606)

•

Replacing fuses (p. 607)

MAINTENANCE AND SERVICE

612

Fuses 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.

613

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

17

.

Function

Ampere

–

–

–

–

–

–

Movement sensor*

5

Instrument panel

5

Center console buttons

5

Sun sensor

5

Function

Ampere

Sensus control module

20

–

–

Steering wheel module

5

Module for start knob and
parking brake controls

5

Heated steering wheel* mod-
ule

15

–

–

–

–

–

–

–

–

Climate system control mod-
ule

10

–

–

Data link connector OBD-II

10

Center display

5

Climate system blower module
(front)

40

Function

Ampere

USB HUB

5

Instrument lighting; Interior
lighting; Rearview mirror auto-
dim function*; Rain and light
sensors*; Rear tunnel console
keypad, rear seat*; Power front
seats*; Rear door control pan-
els; Climate system blower
module left/right

7.5

Control module for driver sup-
port functions

5

Panoramic roof with sun cur-
tain*

20

Head-up display*

5

Passenger compartment light-
ing

5

–

–

Ceiling console display (seat
belt reminder/front passenger
side airbag indicator)

5

–

–

Humidity sensor

5

17

An authorized Volvo workshop is recommended.

||

MAINTENANCE AND SERVICE

* Option/accessory.

614

Function

Ampere

Door module in right-side rear
door

Power right rear seat

A

20

Fuses in the trunk/cargo com-
partment

10

Control module for Internet-
connected vehicle; Control
module for Volvo On Call

5

Door module in left-side rear
door

Power left rear seat

B

20

Audio control module (ampli-
fier) (certain models only)

40

–

–

Multi-band antenna module

5

Front seat massage function*

5

–

–

Rear door sun curtain modules

15

Fuel pump control module

15

Function

Ampere

Relay windings for distribution
box in engine compartment;
Relay windings for transmis-
sion oil pump

5

–

–

Driver's seat heating

15

Front passenger's seat heat-
ing

15

Coolant pump

10

–

–

Power driver's seat*

20

Active chassis control module*

20

–

–

Sensus control module

10

–

–

Climate system blower module
(rear)

10

Power front passenger seat*

20

Function

Ampere

Display for rear seat conven-
ience functions

A

; On-board

diagnostics (OBD II) in tunnel
console between rear seats

A

;

Extra movement sensor

A

5

A

TV* (certain markets only)

5

Primary fuse for fuses 9, 53
and 58

15

A

Excellence

B

Excellence

Related information

•

Fuses and fuseboxes (p. 606)

•

Replacing fuses (p. 607)

||

MAINTENANCE AND SERVICE

616

The fuse box is located on the right-hand side.

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.