Volvo S90 (2019 year). Manual — part 35
MAINTENANCE AND SERVICE
590
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 the starter motor and other
electrical equipment in the vehicle.
The start battery should only be replaced by a
workshop
19
.
The vehicle has a voltage-regulated alternating
current generator.
The start battery is a 12 V battery, designed for
the carbon dioxide reducing functions Start/Stop
and regenerative charging, and to support the
functionality of the car's different 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.
If the start battery is being charged, the support
battery will also be charged.
Positive connection point
Negative connection point
19
An authorized Volvo workshop is recommended.
MAINTENANCE AND SERVICE
}}
591
Only a modern battery charger with controlled
charge voltage should be used to charge the
starter battery and support battery. The rapid
charging function should not be used as this
could damage the 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.
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.
On certain models, the battery is secured with
a tensioning strap. Make sure that the ten-
sioning strap is always securely tightened.
||
MAINTENANCE AND SERVICE
592
Specifications for start battery
Battery type
H7 AGM
H8 AGM
Voltage (V)
12
12
Cold start capacity
A
- CCA
B
(A)
800
850
Dimensions, L×W×H
315×175×190 mm (12.4×6.9×7.5 inches)
353×175×190 mm (13.9×6.9×7.5 inches)
Capacity (Ah)
80
95
A
According to EN standard.
B
Cold Cranking Amperes.
Volvo recommends that batteries are replaced by
an authorized Volvo workshop.
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
}}
593
Support battery
In addition to the start battery, vehicles equipped
with the Start/Stop function also have a support
battery.
Vehicles with the Start/Stop function are equip-
ped with two 12-volt batteries
‒ a heavy-duty
start battery and a support battery that provides
extra current during the Start/Stop function's
start sequence.
The support battery is located in a box next to the spring
strut in the engine compartment.
•
The higher the current consumption in
the vehicle, the more the alternator has to
work and the batteries have to be
charged = increased fuel consumption.
•
When the starter battery capacity has
dropped below the lowest permissible
level, the Start/Stop function is disen-
gaged.
When the Start/Stop function is temporarily
reduced due to high current consumption:
•
The engine will auto-start, even if the driver
does not lift their foot from the brake pedal.
The support battery does not normally require
more service than the start battery. If you have
any questions or concerns, consult a workshop
‒
an authorized Volvo workshop is recommended.
If the following is not observed, the Start/
Stop function may temporarily stop working
after connection of an external starter battery
or battery charger:
•
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.
||
MAINTENANCE AND SERVICE
594
If the starter battery is discharged to the
extent that the vehicle does not have normal
electrical functions and the engine must then
be jump-started with an external battery or a
battery charger, the Start/Stop function may
remain activated. If the Start/Stop function
shortly thereafter auto-stops the engine, there
is a huge risk that auto-start of the engine will
fail due to insufficient battery capacity since
the battery had not had time to recharge.
If the vehicle has been jump-started or if
there has not been enough time for the bat-
tery to be charged with a battery charger, it is
advisable to temporarily deactivate the
Start/Stop function until the battery has been
recharged by the vehicle. At an ambient tem-
perature of about +15°C (about 60°F), the
battery must be charged by the vehicle for at
least one hour. At lower ambient tempera-
tures, the charging time can increase to
3-4 hours. It is advisable to charge the battery
with an external battery charger.
Specifications for support battery
Voltage (V)
12
Cold start capacity
A
-
CCA
B
(A)
170
Dimensions, L×W×H
150×90×130 mm
(5.9×3.5×5.1
inches)
Capacity (Ah)
10
A
According to EN standard.
B
Cold Cranking Amperes.
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
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.
MAINTENANCE AND SERVICE
595
Avoid smoking, open
flames, and/or sparks.
Risk of explosion.
Recycle properly.
A used start battery or backup battery con-
tains lead and must be recycled in an environ-
mentally 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.
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.
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. 597)
•
MAINTENANCE AND SERVICE
596
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. 597)
•
MAINTENANCE AND SERVICE
}}
597
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.
598
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 46-54 are
"Micro" fuses.
•
Fuses 14-17, 31-34 and 38-45 are
"MCase" fuses and should only be replaced
by a workshop
20
.
Function
Ampere
–
–
–
–
–
–
Ignition coils (gasoline); spark
plugs (gasoline)
15
Oil pump solenoid; A/C mag-
netic coupling; heated oxygen
sensor, center (gasoline);
heated oxygen sensor, rear
(diesel)
15
Function
Ampere
Vacuum regulators; valve;
valve for power pulse (diesel)
7.5
Engine control module; actua-
tor; throttle unit; EGR valve
(diesel); turbo position sensor
(diesel); turbocharger valve
(gasoline)
20
Engine control module
5
–
–
Solenoids (gasoline); valve;
Engine cooling system ther-
mostat (gasoline); EGR cool-
ing pump (diesel); glow control
module (diesel)
10
Spoiler shutter control module;
Radiator shutter control mod-
ule; Relay windings for power
pulse (diesel)
5
–
–
Engine control module
20
Starter motor
40
Starter motor
Shunt
Function
Ampere
Fuel filter heater (diesel)
30
–
–
–
–
–
–
–
–
–
–
–
–
Front USB port in tunnel con-
sole, rear*
5
12 V outlet in tunnel console,
front
15
12 V outlet in tunnel console
between rear seats
15
12 V outlet in trunk/cargo
compartment*
15
–
–
–
–
–
–
20
An authorized Volvo workshop is recommended.
MAINTENANCE AND SERVICE
* Option/accessory.
599
Function
Ampere
–
–
Heated windshield*, left side
Shunt
Heated windshield*, left side
40
Headlight washers*
25
Windshield washer
25
Transmission control module
15
Horn
20
Alarm siren*
5
Brake system control module
(valves, parking brake)
40
Wipers
30
–
–
Heated windshield*, right side
40
–
–
Brake system control module
(ABS pump)
40
–
–
Heated windshield*, right side
Shunt
Function
Ampere
Fed when ignition is on:
engine control module, trans-
mission components, electrical
power steering, central electri-
cal module, brake system con-
trol module
5
–
–
Right-side headlight
7.5
–
–
–
–
Battery connection control
module
5
Airbags
5
Left-side headlight
7.5
Accelerator pedal sensor
5
Related information
•
•
MAINTENANCE AND SERVICE
600
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.
601
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
21
.
Function
Ampere
–
–
Electrical outlet in tunnel con-
sole between rear seats*
–
30
–
–
Movement sensor*
5
Instrument panel
5
Center console buttons
5
Function
Ampere
Sun sensor
5
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
Function
Ampere
Climate system blower module
(front)
40
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
–
–
21
An authorized Volvo workshop is recommended.
||
MAINTENANCE AND SERVICE
* Option/accessory.
602
Function
Ampere
Humidity sensor
5
Door module in right-side rear
door
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
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
Driver's seat heating
15
Front passenger's seat heat-
ing
15
Coolant pump
10
–
–
Door module in left-side front
door
20
Active chassis control module*
20
–
–
Sensus control module
10
–
–
–
–
Door module in right-side
front door
20
–
–
TV* (certain markets only)
5
Primary fuse for fuses 9, 53
and 58
15
Related information
•
•
||
MAINTENANCE AND SERVICE
604
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.
MAINTENANCE AND SERVICE
}}
* Option/accessory.
605
Positions
•
Fuses 13-17 and 21-36 are "Micro" fuses.
•
Fuses 1-12, 18-20 and 37 are "MCase"
fuses and should only be replaced by a work-
shop
22
.
Function
Ampere
Heated rear window
30
–
–
Pneumatic suspension* com-
pressor
40
Lock motor for rear seat back-
rest, right side
15
–
–
Lock motor for rear seat back-
rest, left side
15
–
–
–
–
Power trunk release*
25
Power front passenger seat*
20
Towbar* control module
40
Function
Ampere
Seat belt tensioner module
(right side)
40
Internal relay windings
5
–
–
Foot movement detection
module for opening the power
trunk release*
5
USB hub/accessory port
–
–
–
Towbar* control module
25
Accessory module
40
Power driver seat*
20
Seat belt tensioner module
(left side)
40
Park Assist Camera*
5
–
–
–
–
–
–
Function
Ampere
–
–
Control module for airbags
and seat belt tensioners
5
–
–
Heated rear seat (left side)*
15
–
–
Blind Spot Information
(BLIS)*; Exterior reverse signal
control module
5
–
–
Modules for seat belt tension-
ers
5
Emissions system actuator
(gasoline, certain engine vari-
ants)
5
–
–
All Wheel Drive (AWD) control
module*
15
Heated rear seat (right side)*
15
–
–
22
An authorized Volvo workshop is recommended.
MAINTENANCE AND SERVICE
}}
607
Cleaning the interior
Only use cleaning agents and car care products
recommended by Volvo. Clean regularly and
treat stains immediately for best results. It is
important to vacuum before using a cleaning
agent.
•
Some colored clothing (for example, dark
jeans and suede garments) may stain the
upholstery. If this occurs, it is important to
clean and treat these parts of the uphols-
tery as soon as possible.
•
Never use strong solvents such as
washer fluid, gasoline, mineral spirit or
concentrated alcohol to clean the interior
as this can damage the upholstery as
well as other interior materials.
•
Never spray cleaning agent directly onto
components that have electrical buttons
and controls. Wipe instead with a damp
cloth with cleaning agent.
•
Sharp objects and Velcro can damage
the car's textile upholstery.
Related information
•
Cleaning the center display (p. 607)
•
Cleaning fabric upholstery and ceiling liner
(p. 609)
•
Cleaning the seat belt (p. 609)
•
Cleaning floor mats and inlay mats (p. 609)
•
Cleaning leather upholstery (p. 610)
•
Cleaning the leather steering wheel
(p. 611)
•
Cleaning interior plastic, metal and wood sur-
faces (p. 612)
Cleaning the center display
Marks, stains, finger smudges etc. on the center
display may affect its performance and readabil-
ity. Clean the screen regularly with a microfiber
cloth.
To clean the center display:
1. Turn off the center display by pressing and
holding the Home button.
2. Wipe the screen clean with the microfiber
cloth provided or use another microfiber
cloth of similar quality. Wipe the screen with
a clean, dry microfiber cloth using small, cir-
cular motions. If necessary, moisten the cloth
slightly.
3. Reactivate the display by pressing the Home
button briefly.
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