Replacing bulbs

This chapter describes how to replace the bulbs on the Citroën C6 and shows the various lighting units with illustrations and technical details. From low beam to indicators to number plate light, each component is clearly labelled. Xenon bulbs, parking lights and side repeaters are particularly safety-relevant and in many cases require a visit to a specialist workshop. Notes on the risk of electric shock, the active bonnet and correct use of tools underline the need for professional maintenance. The structured layout of the chapter helps you quickly identify faulty bulbs and replace them safely, which is essential for visibility and road safety.

Headlight unit, front upper

A Side marker light

B Low beam/high beam

C Parking light

Note: Under certain climatic conditions, condensation may form inside the lighting/signalling components.

This natural phenomenon should disappear after a certain time (for example, after switching on the function for a few minutes).

If it does not, contact a CITROËN dealer or a qualified workshop.

For servicing the headlight units and for replacing the bulbs, please contact a CITROËN dealer or a qualified workshop. The bulbs for lights D and E belong to the same bulb holder.

Headlight unit, front lower

D Indicator

E Daytime running light

F Fog light

Side repeater

To replace the side repeater, press it forwards or backwards to release it, and contact a CITROËN dealer or a qualified workshop.

The front headlights are fitted with xenon bulbs.

Due to the risk of electric shock, we recommend that you contact a CITROËN dealer or a qualified workshop in the event of a fault.

If one bulb fails, replace the other bulbs at the same time.

Your vehicle is fitted with an active bonnet. To ensure that this safety feature works correctly, contact a CITROËN dealer or a qualified workshop to replace any front-end components.

Rear light cluster, centre

A Reversing light

B Fog light

The bulbs for lights A and B belong to the same bulb holder.

Contact a CITROËN dealer or a qualified workshop.

Third brake light

Contact a CITROËN dealer or a qualified workshop.

To access the bulb holders, open the boot and remove the four screws on the bodywork. Then lower the tailgate and pull out the bracket with the two rear housings, without pulling on the power cables.

Number plate light

Release the transparent cover and pull out the bulb. Bulb: W 5 W.

Release the bulb holders with a tool and pull them out to replace them.

Note: The tool for loosening the screws is located in the spare wheel tool kit.

See "Wheel change".

After completing the work, check that the lights function correctly.

Rear light cluster, side

A Parking light.

Bulb: W 5 W.

B Brake light and parking light.

Bulb: P21 W/5 W.

C Indicator.

Bulb: P21 W clear.

D Side marker light.

Bulb: W 5 W.

1. Open the rear left flap, or the two rear right flaps, by turning the pins through a quarter turn.

2. Using a tool, release the two wheels that hold the light cluster.

3. Release the light cluster upwards without touching the seal, and turn the bulbs outwards.

4. Replace the faulty bulbs.

5. To refit the light cluster, insert the pin as far forwards as possible, then press.

Make sure the seals of the rear window and the lights are refitted in their original positions.

6. Tighten the two wheels.

Replacing bulbs on the Citroën C6 1st generation is clearly defined and designed for maximum safety. The Citroën C6 2005-2012 provides detailed instructions and points out the correct procedure, particularly for xenon headlights and the active bonnet.

The easily accessible bulb holders on the rear and number plate lights are particularly convenient. This allows the bulbs to be replaced quickly and safely when necessary.

Frequently Asked Questions

Can I replace the xenon bulbs in the Citroën C6 1st Gen myself?

No. Due to the risk of electric shock, replacement should be carried out only by qualified specialists.

What must be observed when replacing the rear lights?

The seals must be fitted correctly to prevent water damage.