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Introduction

Main optical replacement on C4 phase 1

  1. 
Open the engine hood

Remove the 6 plastic clips
    • Open the engine hood

    • Remove the 6 plastic clips

    • Without dismantling the entire bumper, you have access to the headlight mounting which will have to be removed later.

  2. 
Unscrew the 7 torx screws and remove them

Unscrew the 3 screws of 10 and remove them

Unclip the plate
    • Unscrew the 7 torx screws and remove them

    • Unscrew the 3 screws of 10 and remove them

    • Unclip the plate

    • Remove the plate

  3. 
Unscrew the right fixing

Unscrew the left fixing

Unscrew the bottom fastener
    • Unscrew the right fixing

    • Unscrew the left fixing

    • Unscrew the bottom fastener

    • 3 size 10 screws

  4. 
Tilt the headlight to the right

Slightly deform the plastic bumper to remove the headlight
    • Tilt the headlight to the right

    • Slightly deform the plastic bumper to remove the headlight

    • Do not fully extend the headlight as it is still electrically connected

  5. 
Unlock the main connector with a screwdriver

Open the red plastic part completely, this will raise the connector

Remove the connector
    • Unlock the main connector with a screwdriver

    • Open the red plastic part completely, this will raise the connector

    • Remove the connector

  6. 
Using a screwdriver, extract the metal pin.

Remove the pin

Disconnect the connector
    • Using a screwdriver, extract the metal pin.

    • Remove the pin

    • Disconnect the connector

  7. 
Compare old and new headlight

electrical connection

fixation
    • Compare old and new headlight

    • electrical connection

    • fixation

    • size shape ...

    • Remove the unnecessary fixing part on C4 phase 1

    • it is fixed by a torx screw

  8. 
It is easier to install the bulbs when the headlight is removed

Turn the cap a quarter turn
    • It is easier to install the bulbs when the headlight is removed

    • Turn the cap a quarter turn

    • Remove the bulb by making a 1/4 turn

    • Reinstall the bulb and cover on the new headlight by screwing it in 1/4 turn.

  9. 
Open the headlight cap

Disconnect electrical outlets

Unlock the clip holding the bulb by pressing and turning
    • Open the headlight cap

    • Disconnect electrical outlets

    • Unlock the clip holding the bulb by pressing and turning

    • Remove the bulb without touching the glass

    • Insert the bulb into the new headlight lens

    • Lock the bulb with the clip

    • Reconnect electrically

    • Close with the cap

  10. 
Open the code cap

Disconnect the electrical outlet

Unlock the clip holding the bulb by pressing and turning
    • Open the code cap

    • Disconnect the electrical outlet

    • Unlock the clip holding the bulb by pressing and turning

    • Remove the bulb without touching the glass

    • Insert the bulb into the new headlight lens

    • Lock the bulb with the clip

    • Reconnect electrically

    • Close with the cap

  11. 
Turn a quarter turn to release the night light bulb holder

Turn 1/4 to release the bulb
    • Turn a quarter turn to release the night light bulb holder

    • Turn 1/4 to release the bulb

    • Reinstall the bulb on the new holder

    • Reinstall the bracket on the new headlight

  12. 
Connect and lock the main connector

Connect the turn signal connector

Lock with the metal pin
    • Connect and lock the main connector

    • Connect the turn signal connector

    • Lock with the metal pin

  13. 
Insert the headlight from the left and tilt it

You have to use the flexibility of the bumper to put the headlight in place
    • Insert the headlight from the left and tilt it

    • You have to use the flexibility of the bumper to put the headlight in place

    • Be careful to fit the bottom of the headlight under the bumper

  14. 
Screw the headlight with the 3 fixing screws onto the chassis

right screw

left screw
    • Screw the headlight with the 3 fixing screws onto the chassis

    • right screw

    • left screw

    • bottom screw

  15. 
Secure the grille plate with the 6 plastic clips

Replacing the plate under the bumper and fixing it

6 show torx
    • Secure the grille plate with the 6 plastic clips

    • Replacing the plate under the bumper and fixing it

    • 6 show torx

    • 3 screws of 10

    • Operation control

Finish Line

7 other people completed this guide.

louis moreau

Member since: 7/7/18

436 Reputation

1 Guide authored

7 Comments

Tinkering with your car is possible thanks to people like you. Thank you

Victor - Resolved on Release Reply

Thank you Louis for your valuable experience. Everything went smoothly, thanks to your perfectly documented and illustrated tutorial.

franck.manugal - Resolved on Release Reply

Thanks for this tutorial! I was in trouble otherwise

j2sousa - 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

viard.thomas -

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