See if this works ,
" Re: Radio code insertion Full instructions were in the Citroen Xsara 3020 RDS (4020 RDS) audio system users guide.
1. - Type your 4 figure code in using buttons "1" to "6" once the radio display reads "----".
2. - Validate the code by pressing BAND AST, MODE, RDS, PROG or music symbol button.
3. - If the wrong number is entered, press on/off, volume up, volume down or tape player fast forward to start again.
Once the correct security code is entered, the unit will bleep and set itself into radio mode.
Posted on Monday 31st of October 2011Don't understand this? Ask a question