bulb Seat Exeo ST 2012 User Guide

274If and when
Removing the air duct
The air duct has to be removed to gain access to the bulbs
for the right-side headlight.
Fig. 204 Air duct on
right side of vehicle
– Unscrew bolts A
⇒ Fig. 204.
– Detach air duct from guide B
and take it out. Fitting the air duct
Once the bulb(s) for the right-side headlight have been
changed, the air duct must be re-installed.
Fig. 205 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
. 

275
If and when
Halogen headlight bulbs
Fig. 206 Halogen bulbs
Main beam headlights
Side lights
Dipped beam headlights
Side lights
Turn signal 
A
BCDE
Changing the turn signal bulb
The procedure for changing the bulb is the same on both
sides.
Fig. 207 Turn signal
– Switch off the ignition and the lights.
– Raise the bonnet.
– Turn the bulb holder anticlockwise, pulling it by the grip
⇒ Fig. 207 and removing the bulb holder and the bulb.
– 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).
– Installation is done in the reverse order.
– Check whether the new bulb is working. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

276If and when
Note
Although it is not necessary, previously remove the rigid cover ⇒ Fig. 210
for easier turn signal bulb changes. 
Changing the main headlight bulb
The procedure for changing the bulb is the same on both
sides.
Fig. 208 Main beam
headlights
Fig. 209 Main beam
headlights
– Switch off the ignition and the lights.
– Raise the bonnet.
– Pull up on the rubber cover A
⇒ Fig. 208 to remove it.
– Remove the connector ⇒ Fig. 209 1
from the bulb.
– Press the spring ⇒ Fig. 209 2
inwards and to the right.
– Remove the bulb. pulling it from the connection terminal and
fitting fit the replacement so that it sits correctly in the cut-out
on the reflector. To ensure correct lighting, the filament must be
vertical. When changing the bulb, you can check the position of
the bulb through the headlight glass.
– Installation is in reverse order, ensuring that the rubber cover is
well fitted to the housing.
– Check whether the new bulb is working.
– Have the headlight settings checked as soon as possible. 

277
If and when
Changing the dipped beam headlight bulb
The procedure for changing the bulb is the same on both
sides.
Fig. 210 Dipped beam
headlights
Fig. 211 Dipped beam
headlights
– Switch off the ignition and the lights. –
Raise the bonnet.
– Move the brace ⇒ Fig. 210 1
in the direction of the arrow and
remove the rigid cover, separating the brace side and then re-
moving the two tabs from the other end of the cover.
– Pull the connector ⇒ Fig. 211 2
from the bulb.
– Unclip the retainer spring ⇒ Fig. 211 3
pressing inwards to the
right.
– Remove the bulb and fit the new one in the headlight casing
with the tab upwards, starting to position it from below.
– Clip on the spring, raising it and pressing it slightly while turn-
ing it anticlockwise. To ensure correct lighting, the filament
must be vertical. When changing the bulb, you can check the
position of the bulb through the headlight glass.
– Connect the connector to the bulb.
– Fit the cover, first inserting the side tabs and then closing the
cover and the brace. Make sure that the gasket sits well on the
casing cover during the operation.
– Check whether the new bulb is working.
– Have the headlight settings checked as soon as possible. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

278If and when
Changing the side light bulb (outside of vehicle)
The procedure for changing the bulb is the same on both
sides.
Fig. 212 Side light bulb
(outside of vehicle)
Fig. 213 Side light bulb
(outside of vehicle)
– Switch off the ignition and the lights. –
Raise the bonnet.
– Move the brace ⇒ Fig. 212 1
in the direction of the arrow and
remove the rigid cover, separating the brace side and then re-
moving the two tabs from the other end of the cover.
– Gently press on the bulb holder tabs ⇒ Fig. 213 and pull the
cover upwards (it can also be removed by pulling on the bulb
holder wires).
– Separate the bulb from the bulb holder by pulling both pieces
anticlockwise.
– Fit the new bulb by pressing on the bulb holder.
– Insert the bulb into the socket and press on the bulb holder. Fit
the cover, first inserting the side tabs and then closing the cov-
er and the brace. Make sure that the gasket sits well on the cas-
ing cover during the operation.
– Check whether the new bulb is working. 

279
If and when
Changing the side light bulb (inside of vehicle)
The procedure for changing the bulb is the same on both
sides.
Fig. 214 Side light bulb
(inside of vehicle)
Fig. 215 Side lights.
Bulb holder grip in verti-
cal position
– Switch off the ignition and the lights. –
Raise the bonnet.
– Move the brace ⇒ Fig. 214 1
in the direction of the arrow and
remove the rigid cover, separating the brace side and then re-
moving the two tabs from the other end of the cover.
– Remove the bulb and the bulb holder by pulling on the bulb
holder wiring.
– Separate the bulb from the bulb holder by pulling both pieces
anticlockwise.
– Fit the new bulb by pressing on the bulb holder.
– Insert the bulb into the socket so that the side of the bulb hold-
er grip is vertical ⇒ Fig. 215 and press on it.
– Fit the cover, first inserting the side tabs and then closing the
cover and the brace. Make sure that the gasket sits well on the
casing cover during the operation.
– Check whether the new bulb is working. 
Changing bulbs. Bi-Xenon AFS headlights Types of bulbs
Changing bulbs requires a certain degree of practical skill
You can change the following bulb for the exterior lights yourself:
● Bulb for headlights: Indicator light 12V/21W (PY21W)
The following bulbs should only be changed by a specialised workshop:
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

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