This service for CITROEN cars is no longer available. As an alternative service we recommend Restored Classic: restoredclassic[at]aol.com

Nearly all CLARION-made radios fitted to Citroen cannot be decoded from the serial number, with the exception of those fitted to older cars & especially vans that still have the old C7 security number on the case, similar to 'C7000004524'. Contact an authorised Citroen service dept.

PHILIPS & BLAUPUNKT RADIOS: You will need to pull the radio from the dashboard to read the numbers required to decode these remotely - this will be on a printed label, engraved on the metal case, or both. Extraction 'keys' (often of the type shown here) are required to remove the radio - don't be tempted to try removing the radio another way or force it as you may damage the surrounding dashboard trim. The keys make it very easy - you can find them in motoring stores or online.

Unlock codes for SIEMENS VDO radios in Citroen will generally also need the car's VIN number to be provided.

Is your Citroen radio beeping all the time? Did you buy it second-hand (not the car's original radio)? On newer radios, the constant beeping is usually a sign that the VIN/chassis number programmed into the radio does not match the one stored in your vehicle's B.S.I (Built-In Systems) interface. The only solution is to go to your Citroen dealership or a mechanic that has the Citroen programmer so that they can match the two embedded codes.