I have a 52 plate vauxhall vectra and have lost the code for the stereo its a cdr2005 siemens vdo, i dont have the serial number as i dont know how to get to the back of the unit, can anybody help! Thanks
Unfortunately the majority of SIEMENS/VDO codes (including your CDR2005) will NOT be available for free (or cheap) from anywhere on the Internet as access is required to the original factory database...which is not commercially available..
Try your Main Dealer or a Decoding Service or your local Car Radio / Audio Shop (who are normally the cheapest option) who will connect it to a laptop to read/recode the memory chip (EEPROM)