CITROEN C4 CACTUS Handbook page 202

In the event of a breakdown
Third brake lamp (LEDs)
For the replacement of the light-emitting
diodes (LEDs), contact a CITROËN dealer or a
qualified workshop.
200
Number plate lamps (W5W)
F Insert a thin screwdriver into one of the
cutouts in the the lens.
F Push it outwards to unclip it.
F Remove the lens.
F Change the faulty bulb.
To refit, press on the lens to clip it in place.