Get Care and maintenance -> Car electrics and batteries Guide for Volvo EX40 SUV First Generation (2025-2026)

The tyres need to be at ambient temperature when the pressure is checked and adjusted. This is referred to as having cold tyres.

Never release air from a warm tyre. When it cools down, the internal air pressure drops, which can lead to underinflated or even

entirely deflated tyres.

The tyres can warm up very quickly and should be considered warm if driven for longer than approximately 1.5 km (1 mile). They

often need about 3 hours of cooling down before reaching ambient temperature again.

1. Remove the tyre valve's dust cap and then press the tyre pressure gauge firmly onto the valve.

2. Check the gauge to see what the current tyre pressure is.

3. If the pressure is low, inflate the tyre to the correct pressure. The recommended pressure for factory-fitted tyres is shown on

the door pillar on the driver's side.

4. Refit the dust cap^[1]to avoid damage to the valve.

5. Inspect the tyre for stuck debris, such as nails or other objects, that could puncture the tyre.

6. Check the sidewalls for any cavities, cuts, bumps or other irregularities.

If you accidentally over-inflate the tyre, press the metal pin in the middle of the valve to let out the excess air. Then check the

pressure again.

After adjusting the tyre pressure, remember to store a new reference value in the tyre pressure monitoring system.

Note

Spare wheels may have recommended pressures that are different from those of the original tyres. Always use the

pressure recommended by the spare wheel manufacturer.

Tip

You can use the compressor from the temporary puncture repair kit to check and adjust the tyre pressure on your original

tyres when needed.

[1]

Only use original Volvo dust caps or plastic ones as metal dust caps may corrode and stick to the valve.

13.5. Car electrics and batteries

Your car has a specialised electrical system that delivers electricity to and from the batteries.

There are both high-voltage and low-voltage circuits for different electrical functions.

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instances. For more information, refer to the first page for the complete disclaimer note.

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There is information about several of your car's electrical components in this section of the manual. This includes:

Traction battery

12 V battery

Fuses

Tip

Car charging and convenience features

You can read more about charging, such as the charging port and cables, in another section of the manual.

Power-related features, such as USB ports and wireless charging of devices, are also covered in other sections of the

manual.

Warning

If not described in the user manual

Contact an authorised Volvo workshop for any required repairs or servicing that is not clearly described in the user

manual.

Do not modify the car's electrical components.

High voltage

High-voltage components can produce or conduct lethal currents and must only be handled by authorised

technicians.

Orange cables must only be handled by authorised technicians.

13.5.1. Traction battery

Your car's traction battery is the central energy and power source for your car. It powers all electric propul-

sion and indirectly powers the rest of the car by keeping the smaller 12V battery charged.

The traction battery sits low in the underbody of the car

Battery care and health

How you use your car affects the traction battery's condition. Over time its capacity decreases. There are recommended user

practices that can help extend the battery's service life. These user practices cover events and conditions that can cause battery

damage.

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instances. For more information, refer to the first page for the complete disclaimer note.

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Important

Leaving the car with a low battery level can lead to battery damage. Make sure to charge the car as soon as possible if the

battery level is near empty.

Tip

There are separate sections in this manual about battery health and what you can do to recover from a low-power

scenario.

Battery service and maintenance

The traction battery is a high-voltage component that only authorised technicians are equipped to service safely.

Warning

If not described in the user manual

Contact an authorised Volvo workshop for any required repairs or servicing that is not clearly described in the user

manual.

Do not modify the car's electrical components.

High voltage

High-voltage components can produce or conduct lethal currents and must only be handled by authorised

technicians.

Orange cables must only be handled by authorised technicians.

Battery passport

You can find out more about your car's traction battery by scanning the battery passport QR code. It is located on the inside of

the door pillar on the driver's side and is visible when the door is opened.

13.5.1.1. Managing battery health and performance

There are user practices that can help maintain the traction battery's condition and performance over time.

Some scenarios can lead to battery damage and should always be avoided.

Low battery level and flat battery

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instances. For more information, refer to the first page for the complete disclaimer note.

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Important

The traction battery can sustain severe damage if it is not charged after the battery level reaches 0%. The car draws a

small amount of power when parked. Therefore, leaving the car with a low battery level without charging can lead to a flat

battery and battery damage. If the battery level is below 20% when parked, it is recommended that the car is connected

for charging as soon as possible.

If the battery level reaches 0%, the battery is considered flat or empty. The car then needs to be charged as soon as possible to

reduce the risk of battery damage.

The smaller 12 V battery is also at risk of going flat if the traction battery can't supply it with power. If both batteries have gone

flat, the car will have no power at all and no ability to initiate charging.

High state of charge

Important

The traction battery can sustain damage if the car's battery level is kept very high for a long period of time.

For regular charging, battery wear can be reduced by selecting a target battery level lower than 100%. Only charge to 100% if

the full range is needed for your next trip.

If you are leaving the car plugged in for charging without any immediate plans to drive it, select the target battery level recom-

mended in the car's charging view.

Charging habits

AC charging is the recommended charging mode for everyday charging. This helps maintain the condition of the battery over

time. DC charging causes more wear.

Long-term parking

When leaving your car parked for longer than one month, the recommended battery level is 40-60%. Use or charge the car to

reach the recommended level.

If you are leaving the car parked for longer than three months, it's recommended to keep it plugged in but set a battery charging

limit of 50%. This is for better battery health.

Regularly check the battery level and that charging is working.

Tip

There is a separate section in this manual with more recommendations for long-term parking.

Parking in hot weather

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instances. For more information, refer to the first page for the complete disclaimer note.

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Important

Avoid exposing the car to extreme temperatures. Avoid leaving the car parked for longer than 24 hours if the temperature

is at risk of reaching 55 °C (131 °F).

During warmer periods of time, you're recommended to plug in the car during parking. High temperatures cause battery dam-

age, especially when the car is exposed to hot weather for prolonged periods. The car can actively cool the battery while it's

parked, but that uses energy. When you're returning to your parked car, the battery level could be noticeably lower than before.

If the car is plugged in for charging, it can cool the battery without lowering the battery level and risking a flat battery.

In hot temperatures, it is recommended that you park in a shaded spot. Strong sunlight combined with high temperatures can

lead to very high battery temperatures and excessive cooling needs.

Parking in cold weather

When the battery is cold, the car temporarily reduces battery performance until it's warmed up. Driving the car in a state of re-

duced performance doesn't harm the battery.

To avoid temporarily reduced performance from a cold battery, connect the car for charging and activate the car's precondition-

ing ahead of your trip. The car can then heat the battery without affecting performance and available range.

In temperatures below -30 °C (-22 °F), avoid leaving the car parked without charging for longer than 24 hours.

13.5.1.2. Traction battery cooling system

Your car has an advanced temperature regulation system.

The system actively regulates the temperature of the traction battery while you're parked, charging or driving your car. This hap-

pens if your car experiences high or low temperatures and during preconditioning.

Important

Never attempt to add coolant yourself

The cooling system is a closed system. A trained technician must perform any required maintenance of the cooling sys-

tem.^[1]

[1]

Volvo recommends an authorised Volvo workshop.

13.5.2. 12 V battery

The 12 V battery powers everything in your car except the electric propulsion.

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instances. For more information, refer to the first page for the complete disclaimer note.

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Keeping the 12 V battery charged

The 12 V battery is charged whenever the motor is running. However, it charges better when driving the car. Using a lot of en-

ergy without allowing the 12 V battery to charge can lead to low battery level and electrical features can be reduced or disabled.

When you aren't driving the car, avoid using electrical functions such as:

air conditioning

headlights

wipers

radio

centre display

or the 12 V socket and USB ports.

If you still need to use certain features while the car is stationary, turn the motor off to use less power.

If the battery level is below a certain point, you will need to charge it with an external charger or jump start the car with an ex-

ternal battery.

Servicing and replacement

The 12 V battery is maintenance-free. Contact an authorised Volvo workshop if the 12 V battery needs to be replaced.

13.5.2.1. Battery labels

Low-voltage car batteries have labels containing information for safe handling.

Symbols

Avoid sparks and naked flames.

Use protective goggles.

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instances. For more information, refer to the first page for the complete disclaimer note.

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Store the battery out of reach of children.

The battery contains corrosive acid.

More information in the car's user manual.

Risk of explosion.

The battery must be disposed of properly to be recycled.

Recycle properly.

Note

Depicted labels

Labels depicted in this manual are generic representations of those found around your car. The manual only contains

their location and what kind of information they hold. Find the actual label for specific information about your car.

13.5.3. Battery recycling

Used batteries must be recycled in an environmentally sound manner.

Consult Volvo support if you're unsure of how to dispose of batteries.

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instances. For more information, refer to the first page for the complete disclaimer note.

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13.5.4. Fuses

Electrical fuses protect different parts of the car's electrical system by cutting the power if the current

exceeds the fuses' threshold. You need to replace a blown fuse to restore full functionality to the car's

electrical system.

Important

A blown fuse may be an indicator of an underlying electrical fault. Contact Volvo support if your car indicates that a fuse

has blown.

13.5.4.1. Fuse box under the bonnet

Here you can find fuse positions if you need to change a fuse. The fuses in this box helps protect the

electronics for example for the engine and brake features. There are several fuse boxes in your car.

Fuse box location

Diagram showing the fuse positions

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instances. For more information, refer to the first page for the complete disclaimer note.

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To access the fuses you need to unclip the box lid.

Number Feature

Ampere Type

USB ports in the rear of tunnel console

7.5

15

–

Micro

1

Front 12 V socket in tunnel console

Micro

2

–

Micro

3

–

Micro

4

Engine Control Module (ECM)

10

15

5

Micro

5

Shut-off valve for traction battery cooling

Micro

6

Coolant pump for traction battery

Micro

7

Spoiler damper and radiator

10

–

Micro

8

–

Micro

9

–

Micro

10

11

–

Micro

Right headlight

20

5

Micro

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

Left headlight

Micro

Collision module (SRS), Capactive occupant sensor (COS)

Accelerator pedal

Micro

5

Micro

Supplied when the ignition is switched on: Engine, Transmission, Electric steering servo, Central electronics, Brake system 5

Micro

Diagnostic port firewall, Exterior car noise

5

MCase^[1]

Micro

Alcohol lock

5

–

Micro

Relay coils

5

Micro

–

Micro

Brake pedal

5

Micro

Calculation unit

5

Micro

Traction battery

5

Micro

–

Micro

Engine Control Module (ECM)

5

Micro

Charging unit

5

Micro

Front motor converter

5

Micro

Horn

20

5

Micro

Alarm siren

Micro

Wipers

30

–

MCase^[1]

MCase (slotted)^[1]

MCase^[1]

MCase (slotted)^[1]

Micro

–

Brakes

30

–

Headlights

30

–

Towbar

25

40

–

Towbar

–

Outer heat exchanger

5

High-voltage converter, Air conditioning compressor, Switching valve, Surveillance unit

5

Micro

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instances. For more information, refer to the first page for the complete disclaimer note.

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Number Feature

Ampere Type

Traction battery, Front and rear motor converter

15

20

–

Micro

48

49

50

51

Traction battery cooling pump

Micro

Traction battery cooling pump

Micro

–

Micro

–

MCase (slotted)^[1]

Micro

52

53

54

55

56

–

Left headlight

Right headlight

20

Micro

[1]

Volvo recommends an authorised Volvo workshop for all fuse replacements of this type.

13.5.4.2. Fuse box underneath the glove box

Here you can find fuse positions if you need to change a fuse. The fuses in this box helps protect the

electronics for example in the power sockets, displays and steering wheel. There are several fuse boxes in

your car.

Fuse box location

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To access the fuse box you need to pull back the floor mat underneath the glove box.

Diagram showing the fuse positions

To access the fuses you need to unclip the box lid.

Number Feature

Ampere Type

Audio amplifier

40

25

20

–

MCase (slotted)^[1]

1

Central Electronic Module (CEM) A

Central Electronic Module (CEM) B

Fan for front climate

Power operated tailgate

Power operated front left seat

Power operated front right seat

–

MCase (slotted)^[1]

MCase^[1]

Micro

2

3

4

5

6

7

8

Rear right door

20

–

9

Rear left door

Micro

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

Front left door

Micro

–

Micro

Right doors

20

15

5

Micro

Rear seat heating

Micro

Safety module (ASDM), Converter rear electric motor

Calculation module

Sun sensor, Toll collection transponder

Steering wheel lock

Climate control

Micro

5

Micro

5

Micro

7.5

5

Micro

Interior motion sensors

Driver display

Micro

5

Micro

Buttons in the centre stack

Steering wheel

5

Micro

5

Micro

Electronic gear selector

Centre display

5

Micro

5

Micro

Connected services

TCAM antenna

5

Micro

5

Micro

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instances. For more information, refer to the first page for the complete disclaimer note.

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Number Feature

Ampere Type

Relay coils

5

Micro

28

29

30

31

Foot movement opening of the boot

5

Micro

–

Micro

Infotainment

15

10

5

Micro

On-board diagnostic port OBDII

Micro

Alcohol lock

Micro

32

33

34

40

41

Rear left headrest

15

30

40

–

Micro

Rear right headrest

Micro

Heated rear windscreen

MCase+

MCase+ HT

MCase+ HT^[1]

Micro

Left seatbelt pretensioner

Right seatbelt pretensioner

42

50

51

–

Micro

Cooling fluid pump

7.5

15

5

Micro

52

53

54

55

56

57

58

60

61

Heated steering wheel

Micro

Air humidity sensor, Air particle sensor

Micro

Headlamp washers

25

–

MCase+

MCase

Micro

Windscreen washers

–

Micro

–

Micro

62

63

64

65

66

67

68

69

70

71

–

Micro

Blind spot information (BLIS)

5

Micro

–

Micro

–

Micro

Front radar

5

Micro

–

Micro

–

Micro

–

Micro

Air bags and seatbelt pretensioners

5

Micro

Rear windscreen wiper

15

5

Micro

80

81

Electronic gear shift, Roof console indicator light, Wide angle vision, 360 parking camera

Micro

Panorama roof

20

7.5

5

Micro

82

83

84

85

86

87

90

91

Interior lights, Rear view mirror, Rain and light sensors, Panels in rear doors and boot

Micro

Wireless charging

Front camera

Alcohol lock

USB ports

–

Micro

5

Micro

5

Micro

5

Micro

–

Micro

–

Micro

[1]

Volvo recommends an authorised Volvo workshop for all fuse replacements of this type.

13.5.5. Removing panels under the bonnet

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instances. For more information, refer to the first page for the complete disclaimer note.

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To access some maintenance-related components, such as the fuses, you need to remove the protective

panels under the bonnet.

Warning

High voltage

A number of electrical components in the car use high-voltage current and can be extremely dangerous if handled incor-

rectly. Do not touch anything that is not clearly described in the user manual.

Important

The panels are designed to protect the components behind them. Only remove the panels around the storage

compartment under the bonnet if the user manual clearly tells you to. Contact a workshop if you experience any

problems or maintenance is required^[1]

.

The panels overlap one another so you need to remove and install them in a certain order.

1

3

2

8

7

6

5

4

Panel overview

1

2

3

4

5

6

7

Panel A Provides access to the negative battery terminal for jump starting your car.

Panel B

Panel C

Panel D Provides access to the positive battery terminal for jump starting your car and to fuses under the bonnet.

Panel E

Panel F Cover for storage compartment under the bonnet.

Washer fluid reservoir cap.

Fastening plugs

The panels are held in place with plugs. To remove these plugs, use a screwdriver or similar tool to press in the locking pin in

the middle of the plug. When the pin is pressed in far enough, you can pull the plug out. Avoid pushing the pin all the way

through the plug, as this could cause it to dislodge and fall down between components.

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Panel A

Remove the four plugs holding panel A in place.

•

>

The panel is now held in place by the hidden snaps.

Lift the panel carefully until the snaps no longer hold the panel in place.

You can now remove the panel.

•

>

Panel B and C

First remove panel A.

•

Remove the five plugs holding panel B or C in place.

•

>

The panel is now detached and you can remove it completely.

Panel D and E

First remove panels A and B or C, depending on side, and open the cover for the storage space.

•

Remove the plug holding panel D or E in place. To remove panel E, you also need to remove the washer fluid cap.

The panel is now held in place by the hidden snaps.

•

>

Lift the panel carefully until the snaps no longer hold the panel in place.

The panel is now detached and you can remove it completely.

•

>

Panel F

First remove panels A, B, C, D and E.

•

Remove the two plugs holding panel F in place.

•

>

The panel is now held in place by the hidden snaps.

Lift the panel carefully until the snaps no longer hold the panel in place.

The panel is now detached and you can remove it completely.

•

>

Reinstalling the panels

Important

Make sure you reinstall all of the panel to their original positions before driving your car.

When reinstalling a panel, pull the locking pin out completely before reinserting the plug. When the plug is inserted in the at-

tachment hole in the panel, push the pin into the plug again to secure the panel.

Make sure that the snaps are positioned correctly before pushing the panel into place.

[1]

An authorised Volvo workshop is recommended

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13.6. Replacing light bulbs

You can change some of the bulbs for your car's exterior lights yourself. However, most of the car's exterior

lights are LEDs which should be replaced by an authorised Volvo workshop.

Your car will notify you if it detects a broken light.

Warning

Risk of damaging electrical components

Never insert a foreign object instead of a light bulb.

Always use the same type when replacing a light bulb.

Volvo recommends an authorised Volvo workshop for all light bulb replacements which are not clearly described in

the user manual.

Note

Exterior lighting may temporarily contain water from condensation. This is normal and all exterior lights are designed to

withstand this. Condensation is normally vented out of the light housing after a period of time.

13.6.1. Replacing rear fog light bulb

The rear fog light is located in the rear bumper on the driver's side of the car.

Important

Never touch the bulb glass with your bare fingers. Grease and oils from your fingers vaporise from the heat and will leave

a deposit on the reflector, which may damage it.

You need to make sure that the new bulb is of the correct type:

H21W LL

Rear brake light

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instances. For more information, refer to the first page for the complete disclaimer note.

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Care and maintenance -> Car electrics and batteries for Your Volvo EX40 SUV First Generation (2025-2026)

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