Volvo S90 (2021 year). Manual in english — page 36
MAINTENANCE AND SERVICE
615
The system cannot directly detect changes
when the oil is filled or drained. The car
must have been driven approx. 30 km
(approx. 20 miles) and have been station-
ary for 5 minutes with the engine switched
off and on level ground before the oil level
indication is correct.
If the right conditions for measuring the oil
level (time after engine shutdown, the car's
inclination, outside temperature, etc.) are
not met, then the message
No value
available
will be shown in the centre dis-
play. This does
not
mean that there is
something wrong in the car's systems.
If this symbol is shown then the
oil pressure may be too low. Stop
the car as quickly as possible and
have the car recovered to a work-
shop – an authorised Volvo workshop is
recommended.
Fill the engine oil
Filler pipe
12
,
13
In some cases, oil may need to be topped up
between service intervals. No action with
regard to engine oil level needs to be taken
until a message is shown in the driver display.
WARNING
If the
Engine oil level
Service required
message is shown, visit a workshop – an
authorised Volvo workshop is recom-
mended. The oil level may be too high.
WARNING
Do not spill oil onto the hot exhaust mani-
fold due to the risk of fire.
If the
Engine oil level low
Refill 1 litre
message is shown, fill only with the speci-
fied volume, e.g. 1 litre (1 quart).
Related information
•
•
Adverse driving conditions for engine oil
(p. 676)
•
Engine oil — specifications (p. 674)
•
•
12
Engines with electronic oil level sensor do not have a dipstick.
13
The appearance of the engine compartment may differ depending on model and engine variant.
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MAINTENANCE AND SERVICE
616
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
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, left-hand drive car
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MAINTENANCE AND SERVICE
617
Screw off the cap in the plastic cover.
Screw off the cap and top up with coolant
if necessary. The coolant level must not
exceed the yellow
MAX
mark inside the
expansion tank.
Reinstall the parts in reverse order.
Coolant expansion tank, right-hand drive car
Grip the hatch's handle and lift/jiggle the
hatch from the plastic cover.
Screw off the cap and top up with coolant
if necessary. The coolant level must not
exceed the yellow
MAX
mark inside the
expansion tank.
Reinstall the parts in reverse order.
•
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. 612)
•
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MAINTENANCE AND SERVICE
618
Starter battery
The starter battery is used to start up the
electrical system and drive the starter motor
as well as other electrical equipment in the
car.
The electrical system is single-pole and uses
the chassis and engine casing as a conductor.
The car has a voltage-regulated AC alternator.
The starter 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 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.
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MAINTENANCE AND SERVICE
619
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
H8 AGM
Voltage (V)
12
12
Cold start capacity
A
- CCA
B
(A)
800
850
Size, L×B×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 entrusting battery replace-
ment to an authorised Volvo workshop.
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. 622)
•
•
Using jump starting with another battery
(p. 481)
•
Reset sequence for pinch protection
(p. 169)
•
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MAINTENANCE AND SERVICE
620
Support battery
Cars with the start/stop function are equip-
ped with two batteries - one more powerful
12 V starter battery for starting and one sup-
port battery that helps during the function's
starting sequence.
The 12 V support battery is located in a box next to
the strut tower.
If the car is equipped with a 48V support battery
instead, it is located under the cargo area. The box
over the 48V support battery must only be removed
by an authorised workshop.
WARNING
High voltage can be dangerous in the event
of incorrect intervention. Do not touch any-
thing on the batteries that is not clearly
described in the owner's manual.
•
48 V support battery must never be
used for jump-starting.
•
External electrical equipment must not,
under any circumstances, be con-
nected to the 48 V battery.
•
The 48 V battery may only be serviced
and replaced by a workshop – an
authorised Volvo workshop is recom-
mended.
•
The higher the current take-off in the
car, the more the alternator must be
working and the batteries charging =
Increased fuel consumption.
•
When the capacity of the battery has
fallen below the lowest permissible
level then the Start/stop function is
disengaged.
Temporarily reduced Start/stop function due
to high current take-off means:
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MAINTENANCE AND SERVICE
621
•
The engine starts automatically
14
without
the driver depressing the clutch pedal
(manual gearbox).
•
The engine starts automatically without
the driver lifting his/her foot off the foot
brake pedal (automatic gearbox).
The support battery normally requires no more
service than the normal starter battery. A
workshop should be contacted in the event of
questions or problems - an authorised Volvo
workshop is recommended.
If the following instruction is not observed
then the Start/stop function may temporar-
ily cease to work after the connection of an
external battery or battery charger:
•
The negative battery terminal on the
car's starter battery must
never
be
used for connecting an external starter
battery or battery charger – only the
car's negative charging point
may be
used as the grounding point.
If the starter battery has been discharged
so much that the car has no normal electri-
cal functions and the engine is then jump-
started with an external battery or a battery
charger, the Start/stop function may con-
tinue to be activated. If the Start/stop
function then auto-stops the engine shortly
afterwards, there is a great risk that engine
auto-start will fail due to insufficient bat-
tery capacity, because the battery has not
had the time to recharge.
If the car has been jump-started, or if there
is insufficient time to charge the battery
with a battery charger, the Start/stop func-
tion is temporarily deactivated until the
battery has been recharged by the car. In
an outside temperature of approx. +15 °C
(approx. 60 °F), the battery needs to be
charged for at least 1 hour by the car. In a
lower outside temperature, the charging
time may increase to 3–4 hours. The rec-
ommendation is to charge the battery
using an external battery charger.
Specifications for support battery
Type
AGM
Voltage (V)
12
Cold start capacity
A
-
CCA
B
(A)
170
Size, L×B×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 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. 622)
•
14
Automatic starting can only take place if the gear lever is in neutral position.
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MAINTENANCE AND SERVICE
622
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
•
•
•
Battery recycle
A used starter battery or support 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
•
•
•
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MAINTENANCE AND SERVICE
}}
623
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.
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
•
•
•
Fuses in engine compartment (p. 625)
•
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. 623)
•
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MAINTENANCE AND SERVICE
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625
Fuses in engine compartment
Fuses in the engine compartment protect
engine and brake functions, amongst other
things.
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MAINTENANCE AND SERVICE
626
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
Lambda sensors; Electric charge pressure module
15
Micro
Ignition coils (petrol); Spark plugs (petrol)
Exhaust sensor; Diesel particulate sensor
15
Micro
Solenoid for engine oil pump; Solenoid clutch A/C; Lambda probe, centre (petrol); Lambda probe, rear (diesel); Lambda
probe, front (petrol/diesel)
15
Micro
Vacuum regulators; Valve; Valve for output pulse (diesel); Oil level/temperature sensor (petrol/diesel); Glow plugs (GCU)
(diesel)
7,5
Micro
Engine control module; Actuator; Throttle unit; EGR valve (diesel); Position sensor for turbo (diesel); Valve for turbo-
charger (petrol)
20
Micro
Engine Control Module (ECM)
5
Micro
–
–
Micro
Solenoids (petrol); Valve for fuel leakage monitoring; Thermostat for engine cooling system (petrol); Vacuum valve for
EGR (diesel) Glow control unit (diesel); Supercharger clutch (petrol); Crankshaft ventilation heater (diesel); Valve, gear-
box oil cooler (diesel)
10
Micro
Control module for spoiler damper; Control module for radiator damper; Relay coils for output pulse (diesel); Coolant
valve
5
Micro
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MAINTENANCE AND SERVICE
}}
* Option/accessory.
627
Function
Ampere
Type
Coolant pump
15
Micro
Engine Control Module (ECM)
20
Micro
Starter motor
40
MCase
A
Starter motor
Shunt
MCase
A
Fuel filter heater (diesel)
30
MCase
A
–
–
MCase
A
Calculation unit
5
Micro
–
–
Micro
–
–
Micro
ECM camera
15
Micro
–
–
Micro
USB port in tunnel console, rear
*
7,5
Micro
12 V socket in tunnel console, front
15
Micro
–
–
Micro
12 V socket in cargo area
*
15
Micro
–
–
Micro
Left-hand headlamp, LED
B
15
Micro
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MAINTENANCE AND SERVICE
* Option/accessory.
628
Function
Ampere
Type
Right-hand headlamp, LED
B
15
Micro
–
–
Micro
Heated windscreen
*
left-hand side
Shunt
MCase
A
Heated windscreen
*
left-hand side
40
MCase
A
Headlamp washers
*
25
MCase
A
Washer fluid pump
25
MCase
A
Transmission control unit; Electric gear selector
15
Micro
Horn
20
Micro
Siren
*
5
Micro
Control module for brake system (valves, parking brake)
40
MCase
A
Brake control with 48V battery
30
MCase
A
Windscreen wipers
30
MCase
A
–
–
MCase
A
Heated windscreen
*
right-hand side
40
MCase
A
Parking heater
*
20
MCase
A
Control unit for brake system (ABS pump)
40
MCase
A
–
–
MCase
A
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MAINTENANCE AND SERVICE
* Option/accessory.
629
Function
Ampere
Type
Heated windscreen
*
right-hand side
Shunt
MCase
A
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
–
–
Micro
Right-hand headlamp, LED
B
15
Micro
Alcohol lock
*
5
Micro
Transmission control module
10
Micro
Module for controlling battery engagement
5
Micro
Airbags; Passenger weight sensor
5
Micro
Left-hand headlamp, LED
B
15
Micro
Accelerator pedal sensor
5
Micro
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. 623)
•
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MAINTENANCE AND SERVICE
630
Fuses under glovebox
Fuses under the glovebox protect, amongst
other things, electrical sockets, displays and
door modules.
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