Hi Guys, Thanks for your reply guys, the battery seems fine and I couldn't find a blown fuse on the fuse board in the engine compartment. I ran a lexia test on it today, that seems to point towards the engine relay. Does anyone know a way to test the relay before I get a new one. The fault code was B9A0 'Starter Control Relay Fault'. Thanks hope citroen have a solution. Only happened once since battery charge But we now have another problem. Since reconnecting battery car won’t lock from Key fob without alarm going off . Can lock with key or locks if unlocked and doors not opened Within 30 seconds but every time we use fob alarm sounds. Local mechanic has checked and A friend took the battery out and told me to get it replaced. Now on enquiring from Halfords, apparently unless the battery is replaced with new one within 10 minuites, all the programme data is wiped off and key will need reprogramming. On looking at costs, it seems this could be £100 + via main dealer. FAQ. FAQ #6. Change the C4 key fob battery? It's easy to do as the fob splits open easily inserting a small coin in the groove on the end opposite the actual metal key and twisting gently. They are simple watch 'coin' batteries and you may find them in a high street jewellers or clock repair shop and are. Coupe and Hatch: CR 1620 3v battery. Our C4GP has stopped recognising one of our keys completely and is now starting to fail to recognise the second. We've replace batteries in both fobs and followed the manual instructions to reset the key. Page 74 of 527. View, print and download for free: alarm - Citroen GRAND C4 PICASSO 2017 2.G Owner's Manual, 527 Pages, PDF Size: 12.91 MB. Search in Citroen GRAND C4 PICASSO 2017 2.G Owner's Manual online. CarManualsOnline.info is the largest online database of car user manuals. Hi, I've got a Citroen c4 grand picasso on a 2018 plate. My keyless entry has gone from working perfectly, to only working 1 way ie,locking. To not working at all. I've changed the key fob battery and it got worse after that. Also the car alarm has started randomly going off, 1/2 a week. Citroen C4 Picasso - Video tutorial. Today's guide will show us the main steps on how to dismantle and replace the battery of the Citroen C4 Grand Picasso and the C4 Picasso. First, we open the car's engine hood and start by removing the plastic cover of the battery. Then, we disconnect both battery terminals (positive and negative) and finally .

citroen c4 grand picasso key reset