Get Emergencies -> Fuses and bulbs Guide for Seat Leon 4 Door Third Generation (2012-2020)

Fuses and bulbs

Towing a vehicle equipped with au-

tomatic gearbox

Note

Fuses and bulbs

●

If it is not possible to tow the vehicle in

the normal way, or if it has to be towed fur-

ther than 50 km (30 miles), it must be

transported on a special car transporter or

trailer.

Fuses

Certain restrictions must be observed when

towing your vehicle.

Introduction

Please observe the relevant instructions

●

Should the power supply to the selector

page 86.

›››

In general, a fuse can be assigned to various

electrical components. Likewise, an electrical

component can be protected by several

fuses.

lever be interrupted in position P, the selec-

tor lever will be locked. Before the vehicle

can be recovered/manoeuvred you must

manually release the selector lever

^››› ^{page 41.}

The vehicle can be towed with a tow bar or

tow rope in the normal way, with all four

wheels on the ground. When doing so, please

note the following points:

Only replace fuses when the cause of the

problem has been solved. If a newly inserted

fuse blows after a short time, you must have

the electrical system checked by a special-

ised workshop as soon as possible.

●

Make sure the selector lever is in the N

position.

The vehicle must not be towed faster than

50 km/h (30 mph).

●

The vehicle must not be towed further than

WARNING

50 km (30 miles). Reason: when the engine

is not running, the gearbox oil pump does not

work and the gearbox is not adequately lubri-

cated for higher speeds or longer distances.

The high voltages in the electrical system

can give serious electrical shocks, causing

burns and even death!

●

Never touch the electrical wiring of the

ignition system.

If the vehicle has to be towed with a break-

down truck, it must only be suspended at the

front wheels. Reason: the drive shafts are lo-

cated on the front wheels. If the car is towed

with the rear wheels lifted off the road (I.e.

travelling backwards), the drive shafts also

turn backwards. The planetary gears in the

automatic gearbox then turn at such high

speeds that the gearbox will be severely

damaged in a short time.

●

Take care not to cause short circuits in

the electrical system.

WARNING

Using unsuitable fuses, repairing fuses or

bridging a current circuit without fuses can

cause a fire and serious injury.

●

Never use a fuse with a higher value. Only

replace fuses with a fuse of the same

»

89

Emergencies

Vehicle fuses

Opening and closing the fuse box situated

below the dash panel

amperage (same colour and markings) and

size.

●

Open: fold the cover down Fig. 104.

Close: push back the cover it in until it clicks

●

›››

Never repair a fuse.

●

Never replace a fuse by a metal strip, sta-

ple or similar.

into place.

To open the engine compartment fuse box

CAUTION

To prevent damage to the vehicle's elec-

tric system, before replacing a fuse always

turn off the ignition, the lights and all elec-

trical elements and remove the key from

the ignition.

●

Open the bonnet  page 322.

›››

●

Press the locking tabs to release the fuse

box cover Fig. 105.

●

›››

Then lift the cover out.

Fig. 104 On the dashboard on the driver side:

●

To fit the cover, place it on the fuse box.

lid of the fuse box.

●

If you replace a fuse with higher-rating

fuse, you could cause damage to another

part of the electrical system.

Push the locking tabs down until they click

audibly into place.

●

Protect the fuse boxes when open to pre-

Fuses in the vehicle interior

No. Consumers/Amps

vent the entry of dust or humidity as they

can damage the electrical system.

1

SCR, Adblue

20

7.5

Note

4

5

6

Alarm horn

●

One component may have more than one

fuse.

Gateway

●

Several components may run on a single

fuse.

Automatic gearbox lever

Fig. 105 In the engine compartment: lid of the

Air conditioning and heating con-

trol panel, heating the back win-

dow.

fuse box.

7

10

Read the additional information carefully

^››› ^{page 51}

Diagnosis, handbrake switch, light

switch, reverse light, interior light-

ing, lit-up door sill

8

9

7.5

Only replace fuses with a fuse of the same

amperage (same colour and markings) and

size.

Steering column

90

Fuses and bulbs

No. Consumers/Amps

10

11

Radio display

Left lights

7.5

40

20

5

33

Airbag

7.5

Engine control unit (diesel/pet-

3

30/15

rol)

Reverse switch, clima sensor, elec-

trochromic mirror

34

4

5

Engine sensors

Brake light sensor

Engine power supply

Lambda probe

Engine

7.5/10

7.5

12

Radio

Diagnosis, headlight control unit,

headlight adjuster

35

7.5

13

14

15

16

17

Taxis

6

Air conditioner fan

KESSY

40

10

36

37

Right LED headlight

Left LED headlight

Trailer

7.5

25

30

20

40

30

15

7

7.5/10

10/15

5/10/20

15

8

Connectivity Box

Instrument panel, OCU

Rear camera

KESSY

7.5

10/15

15

38

39

40

42

43

44

45

47

49

52

53

9

Right door

10

11

12

13

15

16

17

Fuel pump control unit

PTC

18

19

20

21

22

23

24

25

26

27

28

12V socket

40

Central locking

Beats Audio CAN and MOST.

Trailer

PTC

40

SCR, engine relay, 1.5

4x4 Haldex Control Unit

Trailer

Automatic gearbox pump

Horn

30

15

Electric driver's seat

Rear window wiper

Starter motor; clutch sensor

Driving mode.

15

Fuel pump control unit

Engine control unit

7.5

Sunroof

20

40

30

20

30

25

15

7.5

Right lights

Left door

7.5

15

Terminal 30 (positive refer-

ence)

18

7.5

Heated seats

Interior light

Trailer

Heated rear window

30

19

21

Front windscreen washer

Automatic gearbox control unit

Engine control unit

Starter motor

30

15/30

5

Fuse arrangement in engine compartment

No. Consumers/Amps

22

23

24

Parking aid control unit, front cam-

era, radar

30

32

7.5

1

ESP control unit

25

40/60

»

PTC

40

2

91

Emergencies

and route light) with light emitting diodes

(LEDs) as a light source.

No. Consumers/Amps

Changing bulbs

31

Electronic differential CUPRA

Front electronic differential

15

Full-LED headlights are designed to last the

lifetime of the car and light bulbs cannot be

replaced. In case of headlight failure, go to an

authorised workshop to have it replaced.

Topic introduction

32

Read the additional information carefully

^››› ^{page 52.}

In-line fuse

Amperes

Changing bulbs requires a certain degree of

practical skill.

Rear power sockets

7.5

WARNING

Take particular care when working on

components in the engine compartment if

the engine is warm. Risk of burns.

●

CAUTION

If you choose to change the engine compart-

ment lamps yourself, remember that it is a

●

Always carefully remove the fuse box

covers and refit them correctly to avoid

problems with your vehicle.

dangerous area

in Working in the en-

›››

●

Bulbs are highly sensitive to pressure. The

glass can break when you touch the bulb,

causing injury.

gine compartment on page 322.

●

Protect the fuse boxes when open to

Always use identical bulbs with the same

designation. The name can be found on the

base of the bulb holder.

avoid the entry of dust or humidity. Dirt and

humidity inside fuse boxes can cause dam-

age to the electrical system.

●

When changing bulbs, please take care

not to injure yourself on sharp edges, in

particular on the headlight housing.

Depending on how equipped the vehicle is,

there are different sets of headlights and tail

lights:

Note

CAUTION

●

In the vehicle, there are more fuses than

●

Remove the ignition key before working

on the electric system. Otherwise, a short

circuit could occur.

●

Halogen headlights.

those indicated in this chapter. These

should only be changed by a specialised

workshop.

●

Full-LED main headlights*

●

Switch off the lights and the parking light

before changing a bulb.

●

Halogen headlights with LED daytime run-

●

Positions not containing a fuse do not ap-

ning lights*

pear in the following tables.

●

Take good care to avoid damaging any

components.

●

Rear bulb light

●

Some of the equipment listed in the ta-

●

LED rear light*

bles below pertain only to certain versions

of the model or are optional extras.

For the sake of the environment

Please ask your specialist retailer how to

dispose of used bulbs in the proper manner.

Full-LED headlight system*

●

Please note that the above lists, while

correct at the time of printing, are subject

to change.

Full-LED headlights handle all light functions

(daylight, side light, turn signal, dipped beam

92

Fuses and bulbs

–

2

Remove connector Fig. 107

from the

›››

Note

Change the front bulbs

bulb.

●

Please check at regular intervals that all

3

Unclip the retainer spring Fig. 107

›››

lighting (especially the exterior lighting) on

your vehicle is functioning properly. This is

not only in the interest of your own safety,

but also that of all other road users.

Dipped headlight bulb

pressing inwards to the right.

Extract the bulb and fit the replacement so

that the lug on the base fits into the recess

on the reflector.

●

Before changing a bulb, make sure you

have the correct new bulb.

●

Do not touch the glass part of the bulb

with your bare hands, use a cloth or paper

towel instead, since the fingerprints left on

the glass will vaporise as a result of the

heat generated by the bulb, they will be

deposited on the reflector and will impair

its surface.

Day light bulb

Fig. 106 Dipped beam headlights.

●

Depending on the level of equipment fit-

ted in the vehicle, LEDs may be used for

part or all of the interior and/or exterior

lighting. LEDs have an estimated life that

exceeds than that of the car. If an LED light

fails, go to an authorised workshop for its

replacement.

Fig. 108 Day light bulb.

–

Raise the bonnet.

1

Turn the bulb holder Fig. 108

clockwise and pull.

anti-

›››

Fig. 107 Dipped beam headlights.

–

Remove the bulb by pressing on the bulb

holder and turning it anti-clockwise at the

same time.

–

Raise the bonnet.

–

1

Move the loops Fig. 106

in the direc-

›››

tion of the arrow and remove the cover.

Installation involves all of the above steps in

reverse sequence.

93

Emergencies

–

Remove the bulb by pressing on the bulb

holder and turning it anti-clockwise at the

same time.

Raise the bonnet.

Move the loop Fig. 111

Turn signal bulb

1

in the direction

›››

of the arrow and remove the cover.

Installation involves all of the above steps in

reverse sequence.

–

2

Slide connector Fig. 112

to the left or

›››

right and pull.

Remove the bulb by disconnecting the con-

nector.

Main beam headlight bulb

Fig. 111 Main beam headlight bulb.

Fig. 112 Main beam headlight bulb.

Installation involves all of the above steps in

reverse sequence.

Fig. 109 Turn signal bulb.

Fig. 110 Turn signal bulb.

–

Raise the bonnet.

1

Move the loop Fig. 109

in the direc-

›››

tion of the arrow and remove the cover.

–

2

Turn the bulb holder Fig. 110

clockwise and pull.

anti-

›››

94

Fuses and bulbs

Fog light bulb*

Note

3 Valid only for versions with incandescent bulbs

●

Due to the difficulty of accessing fog

light bulbs, have them replaced at a Tech-

nical Service or specialised workshop.

●

LED fog lights should only be replaced by

specialised personnel.

Changing incandescent rear

light bulbs

Fig. 114 Fog light: detach the bulb holder

Follow the steps indicated:

Rear lights summary

1

1.

Remove the screw Fig. 113

 from

›››

the fog light grille using a screwdriver

and extract the grille.

Tail lights on side panel

Turn signal

PY21W NA LL

P21W LL

2

2. Remove the 3 screws Fig. 113

.

›››

3. Remove the metal clip situated on the

upper part of the fog light by pulling

Side light and brake light

3

away from the vehicle

the fog light.

 and extract

Tail lights on the rear lid

Left side

1

4. Remove the connector Fig. 114

›››

Fig. 113 Fog light: remove the grille

from the bulb.

Side lights

2x W5W LL

H21 W

2

5. Turn the bulb holder

and pull.

anti-clockwise

Fog lights

6. Remove the bulb by pressing on the bulb

holder and turning it anticlockwise at the

same time.

7. Installation involves all of the above

steps in reverse sequence.

Right side

Side lights

Reverse light

2x W5W LL

P21W LL

»

8. Check that the bulb works properly.

95

Emergencies

The table corresponds to a right-hand traffic

vehicle. The position of lights may vary ac-

cording to the country.

CAUTION

Take care when removing the rear light unit

to make sure there is no damage to the

paintwork or any of its components.

Rear bulbs (in the side panel)

Note

Make sure you have a soft cloth ready to

place under the glass on the rear light unit,

to avoid any scratches.

Fig. 116 Retaining tabs on reverse side of tail

light.

–

Check which of the bulbs is defective.

Open the rear lid.

Remove the cover by prying the flat side of

a screwdriver into the recess and remove

1

the cover from the opening Fig. 115

.

›››

–

Carefully loosen the screw located behind

the cover with a screwdriver, turning it anti-

2

clockwise (arrows) Fig. 115

.

›››

Tilt the light in the direction of the arrows

3

until it comes out of its housing (positions

4

and

)

Fig. 115.

›››

Remove the bulb holder Fig. 116 unlock-

›››

1

ing the retaining tabs

.

Fig. 115 Trunk: location of the bolt securing the

tail light unit. Remove the rear light unit from

side panel.

–

Change the damaged bulb.

To refit follow the steps in reverse order, tak-

ing special care when fitting the bulb hold-

er. The securing tabs must click into place.

96

Fuses and bulbs

–

Reinstall the bulb holder, making sure that

Rear light bulbs (in the rear lid)

A

locking clips

clipped on.

Fig. 117  are properly

›››

Replace the cover of the rear lid lining.

Rear LED light bulb (in the rear lid)

Fig. 118 Position of the bulbs in the bulb holder

The rear lid must be open to change the

bulbs.

–

Remove the rear lid cover in the direction

indicated Fig. 117 .

›››

–

A

Unlock the retaining tabs

of the bulb

1

holder, following the direction of arrows

Fig. 119 Remove the cover from the rear lid

2

and

Fig. 117 .

›››

–

Remove the bulb holder, moving it in the di-

3

rection of arrow

Fig. 117 .

›››

Fig. 117 Remove the cover from the boot lid

Lightly press the defective bulb into the

and detach the bulb holder.

1

2

bulb holder , then turn it to the left

and

remove it Fig. 118.

›››

–

Fit the new bulb, pressing it into the bulb

holder and turn it to the right as far as it will

go.

–

Use a cloth to remove any fingerprints from

the glass part of the bulb.

»

Fig. 120 Remove the bulb holder.

Check that the new bulb works properly.

97

Emergencies

The rear lid must be open to change the

bulbs.

Note

Depending on how equipped the vehicle is,

the number plate lights may be LEDs. LEDs

have an estimated life that exceeds than

that of the car. If a light with LEDs fails, go

to an authorised workshop for replace-

ment.

–

Remove the rear lid cover in the direction

indicated Fig. 119.

›››

–

Turn the reverse lights bulb holder anti-

1

clockwise in the direction of the arrow

Fig. 120.

›››

–

2

Remove the bulb holder from its housing

.

Side turn signals

Change the defective bulb and reinstall the

bulb holder in its housing, following these

instructions in reverse order.

Fig. 122 Number plate light: detach the bulb

holder.

Follow the steps indicated:

–

Check that the new bulb works properly.

1. Press the number plate light in the direc-

tion of the arrow Fig. 121.

›››

Changing number plate light bulbs

2. Remove the number plate light.

3. Turn the connector lock Fig. 122 in the

›››

1

direction of arrow

nector.

and pull on the con-

4. Rotate the bulb holder in the direction of

Fig. 123 Turn signal integrated in the rear view

2

mirror

arrow

and extract it with the bulb.

5. Replace the defective bulb with a new

bulb with the same features.

The side turn signals are LEDS and are inte-

grated in the exterior mirrors.

6. Insert the bulb holder in the number plate

light and turn in the opposite direction of

In case of failure, go to an authorised work-

shop to have them replaced.

Fig. 121 In the rear bumper: number plate light.

arrow

2

until it stops.

7. Plug the connector into the bulb holder.

98

Emergencies -> Fuses and bulbs for Your Seat Leon 4 Door Third Generation (2012-2020)

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