Press the button at the bottom and pull out the emergency key concurrently. You will need to see a tab that will allow you to open the case of your card in half. Use a thin thing to take out the flat battery from the card. . Put in the new battery in the slot provided. Close the card. Citroen C3 Central locking stopped working! [SOLVED] Help! I can't log in. Good Afternoon Last week I received a message on my display saying 'Plip Battery Spent', after googling I found out it was the key fob battery. I bought a new 3V battery but the fob would not activate. Watch this video to learn how to open Citroen C3 Key Cover and install a new battery in it. I will show you from the beginning how to open a Citroen Key Fob bottom cover. Then you will First, we take the remote in our hand and start levering on the side slot of the remote, in order to open it and access the battery compartment. Then, we remove and replace the battery that we find inside (in this case a 3V CR 1620), as shown in the video. We insert the battery in the correct direction and reassemble the back cover of the First of all, open the front door and remove the plastic cover of the grip handle, in order to unscrew the screws below; then we are going to remove the side screws of the door panel in order to detach it, as shown in the video. At this point we unscrew the side screws of the lock and levering the sides of the cylinder we remove the cover and Reconnect the battery, WAIT 1 minute Keeping the doors closed, lean in via the drivers window Switch on the 'ignition' (Don't start the engine) Switch on lights (Dipped, normal driving lights) WAIT 30 Seconds Start the car If you need to replace the BSI (fusebox) you can fit a used one, but it must also come with the correct engine ECU and the Citroen Part Numbers: 6490FS / 6490FT. 2 Buttons: Lock and Unlock. Transponder: ID46 - PCF7941. Frequency: 433 Mhz. Battery Type: TBC. Key Blade: TBC. ISN: Genuine Citroen remote supplied with the original manufacturer packaging. This key comes complete with all electronics and can be supplied either blank (uncut) or cut to your vehicle. OEM Remote Key for Citroen C3 Picasso. Citroen Equivalent Part Numbers: 6490S2 / 6490S3 2 Buttons: Lock and Unlock Transponder: ID46 - PCF7941 Frequency: 433 Mhz Battery Type: TBC Key Blade: TBC ISN: OEM remote key supplied without original packaging. This product is manufactured by Delphi, who manufacture these parts for PSA Group. Following replacement of the battery or in the event of a fault, it may be necessary to reinitialise the remote control. Without Keyless Entry and Starting. Switch off the ignition. Return the key to position 2 (Ignition on). Immediately press the closed padlock button for a few seconds. Switch off the ignition and remove the key 2 from the switch. Type your Citroen C3 question here my key fob was faulty and i sourced a new button component and had it expertly fitted on the computer disk inside the fob and replaced the black casing as well. The … eb70GG.