for 3 days i try to start my stereo but the safe is still appering on the radio,i've got the code.stereo is delta blaupunkt.is anybody there who's got a ideea?thanks

I don't think i have the same radio as you but the process should be pretty much the same...
1. You have to hold the DX and FM1/2 buttons at the same time, for a couple seconds until "0000" shows on the display
2. Enter your code using the numbers 1-4 on the radio. The numbers correspond to the place holder, not the number on the button (for example if your code is4321 you have to press '1'four times, '2' three times,etc.
3. Then hold DX and FM1/2 again until something happens. On mine it will say "SAFE" for a hot second and then the radio will come back on

If that doesn't workyou're gonna have to ask one of the techs or somethin lol good luck!!

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97 A4 2.8QM 12v
Debadged, clear corners and side markers

CAUTION: Quattro kicks ass when wet!