CITROEN C-ZERO Handbook page 102

In the event of a breakdown
Direction indicators
F Turn the bulb holder to the left and
remove it.
F Pull out the bulb and replace it.
To refit, carry out these operations in reverse
order.
Reversing lamps
100
F Turn the bulb holder to the left and
remove it.
F Pull out the bulb and replace it.
To refit, carry out these operations in reverse
order.
Rear foglamp (W21W – 21W)
F Remove the cover.
F Turn the bulb holder to the left and
remove it.
F Pull the bulb out and replace it.
To refit, carry out these operations in reverse
order.
https://www.automotive-manuals.net/
Third brake lamp (W5W – 5W)
F Remove the two screws.
F Remove the bulb holder.
F Remove the bulb and replace it.
To refit, carry out these operations in reverse
order.
Number plate lamps (W5W – 5W)
F Push the cover inwards.