2012 Seat Exeo ST turn signal bulb

280If 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. If not, 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, be deposited on the
reflector and 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. 216 Air duct on
right side of vehicle
– Unscrew bolts A
⇒ Fig. 216.
– Detach air duct from guide B
and take it out. 

281
If and when
Fitting the air duct
Once the bulb(s) for the right-side headlight have been
changed, the air duct must be re-installed.
Fig. 217 Air duct on
right side of vehicle
– Place the air duct in the correct position.
– First turn the two screws A
in lightly, then tighten both screws.
– Push the air duct into guide B
. Bi-Xenon AFS headlight bulbs
Fig. 218 Bi-Xenon AFS
headlight bulbs
Turn signal
Xenon headlight (dipped beam/main beam) 
A
B
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

282If and when
Changing the turn signal bulb
The procedure for changing the bulb is the same on both
sides.
Fig. 219 Turn signal
Fig. 220 Turn signal
– Switch off the ignition and the lights. –
Raise the bonnet.
– Pull the rubber cap ⇒ Fig. 219 to remove it.
– Remove the bulb holder by pulling on the grip and turning it an-
ticlockwise ⇒ Fig. 220.
– Replace the blown bulb in the bulb holder (press and turn anti-
clockwise to remove) with a new bulb (press and turn clockwise
to insert).
– Insert the bulb holder into the socket with the tab facing up-
wards and the grip horizontal. Press it against the socket and
turn clockwise. When changing the bulb, you can check the po-
sition of the bulb through the headlight glass.
– Fit the rubber cap and tighten, making sure it fit properly into
the headlight casing.
– Check whether the new bulb is working. 
Changing the xenon bulb
The procedure for changing the bulb is the same on both sides.
WARNING
This type of bulb should be changed at a specialised workshop.


283
If and when
Changing tail light bulbs (on side panel)
Overview of tail lights
Fig. 221 Overview of tail
lights
Tail lights on side panel
● Brake lights and side lights
● Turn signal Overview of tail lights. LED lamps
Fig. 222 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

286If and when
Position of the bulbs
Pos.
⇒ Fig. 226Bulb function
ATurn signalP21WBBrake lights and side lightsP21W LL
Changing bulbs. LED lamps
All bulbs can be changed easily in the bulb holder.
Fig. 227 Position of the
bulbs in the bulb holder:
Example: Outer left tail
light
The bulb is secured with a bayonet fastening. 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 whether the new bulb is working.
– Re-install the bulb holder ⇒ page 286.
Position of the bulbs
Pos.
⇒ Fig. 227Bulb function
ATurn signalPY21W
Fitting the bulb holder
The bulb holder is easy to fit.
Fig. 228 Securing the
bulb holder in the tail
light unit
– Check that the seal is seated correctly on the bulb holder. 

291
If and when
Position of the bulbs
Pos.
⇒ Fig. 235Bulb 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. 237 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. 237, arrow 1
.
– Insert the bulb as shown by the arrow 2
⇒ Fig. 237.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications