2013 Seat Exeo ST fog light bulb

274If and when
Preparation
● Switch off the ignition, lights and all electrical equipment.
● Open the corresponding fuse box ⇒ page 273.
Identifying a blown fuse
A fuse is blown if its metal strip is ruptured ⇒ Fig. 204.
Point a lamp at the fuse. This will make it easier to see if the fuse is blown.
To replace a fuse
● Remove the fuse.
● Replace the blown fuse by one with an identical amperage rating (same
colour and markings) and identical size ⇒ 
.
● Replace the cover again or close the fuse box lid.
CAUTION
If you replace a fuse with higher-rating fuse, you could cause damage to an-
other part of the electrical system. 
Bulbs
General information
You can change the following bulbs for exterior lights yourself:
● Main headlights: all bulbs (except xenon headlights)
● Tail lights: all bulbs
● Side turn signal bulb
The following bulbs can only be changed by a specialised workshop:●
Main headlights: Xenon* bulb ⇒ page 281
● Front fog lights: Bulb
As a rule, you require a certain degree of practical skill to change defective
bulbs. This applies in particular to those bulbs which are only accessible
from the engine compartment.
If in doubt, we recommend that you have defective bulbs changed by a spe-
cialised workshop or qualified mechanic.
If you do decide to change bulbs in the engine compartment yourself, be
aware of the safety risks involved ⇒ page 235 ⇒ 
in Types of bulbs on
page 275.
The name of many of the lamps fitted by SEAT ends in "LL". This means Long
Life. These lamps are used for functions with a long service time (dipped
beam, side lights, daylight driving, etc.). This does not apply to lamps with
a shorter service time (turn signals, etc.). A lamp with the same name ex-
cept for the last two letters, "LL“ or “SLL”, is compatible, but will have a
service life of approximately half of the LongLife lamps.
When replacing lamp bulbs, the same type of bulb as originally fitted
should always be used where possible. 

275
If and when
Changing bulbs. Halogen headlights Types of bulbs
You must only replace a bulb with a bulb of the same type. The name can be
found on the base of the bulb holder.
BulbTypeDipped beam headlights (halogen)12 V/55 W (H7 LL)Main beam headlights12 V/55 W (H1)Turn signal12 V/21 W (PY21W)Side lights12 V/5 W (W5W LL)
WARNING
● Take particular care when working on components in the engine com-
partment if the engine is warm. Risk of burns.
● Bulbs are highly sensitive to pressure. The glass can break when you
touch the bulb, causing injury.
● The high voltage element of gas discharge bulbs* (xenon light) must
be handled correctly. Otherwise, there is a risk of death.
● When changing bulbs, please take care not to injure yourself on sharp
parts in the headlight housing.
CAUTION
● Remove the ignition key before working on the electric system. Other-
wise, a short circuit could occur.
● Switch off the lights or parking lights before you change a bulb.
For the sake of the environment
Please ask your specialist retailer how to dispose of used bulbs in the prop-
er manner.
Note
● Depending on weather conditions (cold or wet), the front lights, the fog
lights, the tail lights and the turn signals may be temporarily misted. This
has no influence on the useful life of the lighting system. By switching on
the lights, the area through which the beam of light is projected will quickly
be demisted. However, the edges may continue to be misted.
● Please check at regular intervals that all lighting (especially the exterior
lighting) on your vehicle is functioning properly. This is not only in the inter-
est of your own safety, but also in that of all other road users.
● 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. Otherwise, the fingerprints left on the glass will va-
porise as a result of the heat generated by the bulb, they will be deposited
on the reflector and will impair its surface. 
Safety FirstOperating instructionsPractical TipsTechnical Specifications

282If and when
● Main headlight lamps: Xenon ⇒ 
lights.
● Sources of the DRL (daylight) light unit and position.
WARNING
● Take particular care when working on components in the engine com-
partment if the engine is warm. Risk of burns.
● Bulbs are highly sensitive to pressure. The glass can break when you
touch the bulb, causing injury.
● The high voltage element of gas discharge bulbs* (xenon light) must
be handled correctly. Otherwise, there is a risk of death.
● When changing bulbs, please take care not to injure yourself on sharp
parts in the headlight housing.
CAUTION
● Remove the ignition key before working on the electric system. Other-
wise, a short circuit could occur.
● Switch off the lights or parking lights before you change a bulb.
For the sake of the environment
Please ask your specialist retailer how to dispose of used bulbs in the prop-
er manner.
Note
● Depending on weather conditions (cold or wet), the front lights, the fog
lights, the tail lights and the turn signals may be temporarily misted. This
has no influence on the useful life of the lighting system. By switching on
the lights, the area through which the beam of light is projected will quickly
be demisted. However, the edges may continue to be misted.
● Please check at regular intervals that all lighting (especially the exterior
lighting) on your vehicle is functioning properly. This is not only in the inter-
est of your own safety, but also in that of all other road users. ●
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. Otherwise, the fingerprints left on the glass will va-
porise as a result of the heat generated by the bulb, they will be deposited
on the reflector and will impair its surface. 
Removing the air duct
The air duct has to be removed to gain access to the bulbs
for the right-side headlight.
Fig. 217 Air duct on
right side of vehicle
– Unscrew bolts A
⇒ Fig. 217.
– Detach air duct from guide B
and take it out. 

285
If and when
Changing tail light bulbs (on side panel)
Overview of tail lights
Fig. 222 Overview of tail
lights
Tail lights on side panel
● Brake lights and side lights
● Turn signal Overview of tail lights. LED lamps
Fig. 223 Overview of tail
lights
Tail lights on side panel
● Brake lights and side lights
● Turn signal
Note
● It is only possible to change the turn signal light.
● If the warning lamp for the side light and/or rear fog light (LED lights)
lights up, the tail light assembly should be replaced.
● The failure of the lamp is only shown when the LED function goes out
completely. Sometimes, a LED will stop working, without displaying the
warning as the function continues to operate. 
Safety FirstOperating instructionsPractical TipsTechnical Specifications

290If and when
CAUTION
Take care when fitting the tail light unit to make sure there is no damage to
the paintwork or any of its components. 
Changing tail light bulbs (on rear lid)
Overview of tail lights
Fig. 232 Overview of tail
lights
Tail lights on the rear lid
● Rear side lights
● Rear fog light
● Reverse lights Overview of tail lights. LED lamps
Fig. 233 Overview of tail
lights
Tail lights on the rear lid
● Rear side lights
● Rear fog light
● Reverse lights
Note
● It is only possible to replace the rear fog lamp and the reversing light.
● If the side light (LED lamp) gives signs of failing, the light should be re-
placed.
● The failure of the lamp is only shown when the LED function goes out
completely. Sometimes, a LED will stop working, without displaying the
warning as the function continues to operate. 

292If and when
The bulbs are secured with a bayonet fastener. The table below
gives an overview of the bulb positions.
–Lightly press the defective bulb into the bulb holder, then turn it
to the left and remove it.
– 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.
– Check that the new bulb works properly.
– Re-install the bulb holder ⇒ page 293.
Position of the bulbs
Pos.
⇒ Fig. 236Bulb function
AReverse lightsP21W LLBRear side lightsW5W LLCRear fog lightH21W Changing bulbs. LED lamps
All bulbs can be changed easily in the bulb holder.
Fig. 237 Position of the
bulbs in the bulb holder
Example: Tail lights on
the rear lid
The bulbs are secured with a bayonet fastener. The table below
gives an overview of the bulb positions.
– Lightly press the defective bulb into the bulb holder, then turn it
to the left and remove it.
– 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.
– Check that the new bulb works properly.
– Re-install the bulb holder ⇒ page 293. 

293
If and when
Position of the bulbs
Pos.
⇒ Fig. 236Bulb function
AReverse lightsP21W LLBRear fog lightH21W
Fitting the bulb holder
The bulb holder is easy to fit. – Position the bulb holder on the tail light and align it so that it is
securely seated.
– Press the bulb holder into the tail light until it engages.
– Fit the cover back in the interior trim so that it engages.
– Make sure that all bulbs for the tail lights are working. Side turn signals
Fig. 238 Side turn signal
– Press the turn signal to the left or to the right to remove the
bulb.
– Remove the bulb holder from the turn signal.
– Remove the failed glass bulb and replace with a new bulb.
– Insert the bulb holder in the turn signal guide until it clicks into
place.
– First place the turn signal in the opening in the bodywork, fixing
the tabs ⇒ Fig. 238, arrow 1
.
– Insert the bulb as shown by the arrow 2
⇒ Fig. 238.
Safety FirstOperating instructionsPractical TipsTechnical Specifications