While you wait for answers, we may have found some information which could help you.
Click here for 2003 Relay VanBattery drain (or alternator or electrics?) on Citroen Berlingo 2008?
does the berlingo bend valves when the timing belt snaps?
Braking fault?
No accessory mode electrics unless engine running?
Citroen dispatch rear door lock issue?
citreon berlingo 2.0 hdi van?