The central locking works manualy with no problems, but i wanted to get it to work remotely. I brought a new battery for the key fob and still the central locking did not work. I decided to follow some advice id seen while browsing the internet.
All the wires to the tailgate go through the rubber tube so possibly a few of them have broken or maybe just the earth wire. This is from the C4 Technical section Common Problems pinned topic and it may be worth contacting your Citroen dealer in case they may do the repair free of charge: 13. Tailgate electrical faults - rear wiper, lock. No, that wasn't an issue when I had the problem with the microswitch in this thread. However, it does sound familiar from another problem I had where the front passenger door was randomly locking the whole car. The problem traced to a failed sensor/CPU in the front passenger door which was sending incorrect signals. . 69 71 91 417 260 73 128 365