Introduction
Main optical replacement on C4 phase 1
Tools
Parts
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Open the engine hood
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Remove the 6 plastic clips
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Without dismantling the entire bumper, you have access to the headlight mounting which will have to be removed later.
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Unscrew the 7 torx screws and remove them
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Unscrew the 3 screws of 10 and remove them
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Unclip the plate
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Remove the plate
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Unscrew the right fixing
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Unscrew the left fixing
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Unscrew the bottom fastener
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3 size 10 screws
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Tilt the headlight to the right
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Slightly deform the plastic bumper to remove the headlight
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Do not fully extend the headlight as it is still electrically connected
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Unlock the main connector with a screwdriver
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Open the red plastic part completely, this will raise the connector
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Remove the connector
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Using a screwdriver, extract the metal pin.
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Remove the pin
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Disconnect the connector
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Compare old and new headlight
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electrical connection
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fixation
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size shape ...
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Remove the unnecessary fixing part on C4 phase 1
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it is fixed by a torx screw
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It is easier to install the bulbs when the headlight is removed
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Turn the cap a quarter turn
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Remove the bulb by making a 1/4 turn
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Reinstall the bulb and cover on the new headlight by screwing it in 1/4 turn.
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Open the headlight cap
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Disconnect electrical outlets
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Unlock the clip holding the bulb by pressing and turning
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Remove the bulb without touching the glass
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Insert the bulb into the new headlight lens
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Lock the bulb with the clip
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Reconnect electrically
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Close with the cap
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Open the code cap
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Disconnect the electrical outlet
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Unlock the clip holding the bulb by pressing and turning
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Remove the bulb without touching the glass
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Insert the bulb into the new headlight lens
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Lock the bulb with the clip
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Reconnect electrically
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Close with the cap
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Turn a quarter turn to release the night light bulb holder
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Turn 1/4 to release the bulb
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Reinstall the bulb on the new holder
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Reinstall the bracket on the new headlight
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Connect and lock the main connector
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Connect the turn signal connector
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Lock with the metal pin
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Insert the headlight from the left and tilt it
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You have to use the flexibility of the bumper to put the headlight in place
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Be careful to fit the bottom of the headlight under the bumper
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Screw the headlight with the 3 fixing screws onto the chassis
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right screw
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left screw
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bottom screw
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Secure the grille plate with the 6 plastic clips
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Replacing the plate under the bumper and fixing it
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6 show torx
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3 screws of 10
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Operation control
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Cancel: I did not complete this guide.
7 other people completed this guide.
7 Comments
Thank you Louis for your valuable experience. Everything went smoothly, thanks to your perfectly documented and illustrated tutorial.
franck.manugal - Resolved on Release Reply
very well done. No tutorial for the rear lights including the one on the trunk?
romainaublanc - Resolved on Release Reply
The rear light is much easier to remove, there is a first screw, the one hidden above, then 2 pins in the trunk to remove the carpet, another 2 screws and the light comes off

