Always carry out the following actions for changing a bulb in the given order :

Park the vehicle on a firm and level surface at a safe distance from the flow of traffic.

Apply the handbrake firmly Braking, stopping and parking Brakes Parking .

Turn the light switch to position 0 Lights Lights .

Shift the turn signal lever to neutral Lights Lights .

Automatic gearbox: move the selector lever to position P Changing gear Changing gear Automatic gearbox see Automatic gearbox_0 Automatic gearbox see Changing gear_0 Automatic gearbox Manual gearbox see Changing gear_0 Manual gearbox .

Stop the engine and remove the key from the ignition Starting and stopping the engine Engine and ignition Ignition see Engine and ignition_0 .

Manual gearbox: select a gear Changing gear Changing gear Automatic gearbox see Automatic gearbox_0 Automatic gearbox see Changing gear_0 Automatic gearbox Manual gearbox see Changing gear_0 Manual gearbox .

Switch off the orientation lighting Lights Lights .

Leave the defective bulbs to cool down.

Check to see if a fuse has blown Fuses Fuses .

Follow the instructions to change the affected bulb . Always use identical bulbs with the same designation. The designation is inscribed on the bulb, either on the glass part or on the base.

Do not touch the glass part of the bulb with unprotected fingers. The heat of the bulb would cause the fingerprint to evaporate and condense on the reflector. This will impair the brightness of the headlight.

After changing the bulb check to make sure that the bulb is working properly. If the bulb is not working properly, the bulb may not have been inserted properly or may have failed again, or the connector may have been inserted incorrectly.

Any time you change a bulb in the front of the vehicle, the headlight settings should be checked by a qualified workshop.

WARNING

NOTICE
Information on changing bulbs
Removing and installing the headlights4-Pin Heated Oxygen Sensor (HO2S), Removing and Installing
Note
Do not repair the heated oxygen sensor wires. Repairing may
result in malfunctions.
Use the faulty sensor as a guide for installing all of the
accompanying attachments, cable ties or marking bands.
...
Wiring Harness Repair Set -VAS1978A
The new Wiring Harness Repair Set -VAS1978A- makes optimal
repair quality possible in the realm of vehicle electronics.
Using the new pliers, repairs affecting harness connectors and
for breaks in wiring can be performed. For this purpose,
complete repai ...
Aquaplus Design and Multi-Color Paintwork
In order to achieve error-free design and multi-colored
paint applications using Aquaplus solid, metallic, pearlescent
base paint, pay attention to the important notes and in some
cases use special tools.
Preparation:
...