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. Citroen c4 grand picasso 2015. The reason for this is that the system will require a reset with this software ; Hi our grand picasso won't start, when you put key in and press start button the lights and display come on and it trys to start sounds like it has but engine doesn't kick in. Battery symbol coming up The largest English language online Citroen C4 and DS4 Owners Help and Support site incorporating C4owners.co.uk C4owners.com C4GP.org and DS4owners.org C4 - DS4 Owners:: Forums:: C4 Picasso and Grand Picasso - PRE 2013 only :: C4 Picasso Problems as you are required to press on the brake whilst turning the key. I carry a spare. 1 User Hi, I have a C4 Grand Picasso and it would stop at junctions, go into neutral and display a 'gearbox faulty' message. After removing the keys and starting it again several times it would eventually go into gear. I took it to a Citroen dealer in Salisbury and had a gearbox software update and I have had no problems since. 2 - iCarsoft FR V2.0 Citroen, Peugeot, Renault & Dacia Multi System Diagnostic Reset Tool. In stock - 8 available *TOP SELLER*. Delivery in 1-2 days. FREE UK delivery (Worldwide delivery also available) Same day dispatch from our UK Base. Covers Engine, ABS, Airbags, Transmission, DPF, Service, BMS & more.. £149. The remote central locking on one of my key fobs stopped working. I finally got round to looking at it. I tried to reinitialize it and I swapped the batterie From memory on our Citroens it is done by pressing the reset button with the dash lit up but not with the engine running. No need to press the clutch pedal but make sure it is in neutral in case the ignition key is turned too far and the engine starts. Then it starts to count down and when it shows =0 the button can be released and the engine We can currently provide replacement keys for the Picasso Xsara, Picasso C3, Picasso C4 and Picasso C4 Grand. With our ' You Come To Us' and our 'We Come To You' service, a trained technician will use advanced vehicle diagnostic equipment, and will normally be able to program and fully test the key and remote in under 30 minutes. This is a short video to show you how to replace the key fob battery in this Citroen C4 Picasso remote key fob, I hope this video helps you today.This key f Step 2 - Listen to the Sensor. If you've cleaned your sensors and you find that you're still having problems, there are a couple ways you can check if you need a replacement. First, switch on the PDC (Park Distance Control). With this one, get as close as you can to the sensor and put your ear near it. Listen to see if there is a buzzing sound. Q5p2WW.