Volvo S90 Twin Engine (2019 year). Manual — 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.
•
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.
For information on lights not mentioned in
this article, contact a Volvo dealer or a certi-
fied Volvo service technician.
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.
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
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.
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.
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.
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.
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
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
•
•
•
MAINTENANCE AND SERVICE
605
Hybrid battery
The vehicle's electric motor is powered by a
rechargeable, maintenance-free, lithium-ion
hybrid battery.
The vehicle cannot be started if the hybrid
battery is discharged.
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.
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.
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
•
•
•
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.
A used start battery contains lead and must
be recycled in an environmentally responsible
manner.
Related information
•
•
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
•
•
•
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 in the engine compartment (p. 608)
•
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
•
•
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
•
•
||
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.
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