Dealership must access code and will reset. They charge between $30-$50 to do it. Get the code from them so you can reset it next time.
More Info.
In your manual book (Sound System Symphony) dealer gave you had a radio card which came with Serial number & Code number of your radio unit.
Every time you change battery or car doesn't have power source the radio will have "SAFE" displayed on your radio screen. It is time to reset your radio.
To cancel the electronic code (Anti-theft coding) here is step from Audi manual book. That what I did for my Audi A4 2001 1.8T Quattro Turbo
Hint: you must have radio code number from dealer!!!!
1) Turn radio on - the word SAFE appears in the display
2) Pres the P.SCAN and RBDS button simultaneously and hold them down until "1000" light up in the display.
3) release buttons. Do not, under any circumstances, continue holding them down or press them once again. This would cause the radio to consider the number "1000" to be the input code number.
4) Use station buttons 1...4 to enter the code number on your "Radio Card" from manual book. Use button 1 to enter the first digit of the code number, button 2 to enter the second digit and so on. Station buttons 5 & 6 cannot be used.
Once the code is shown in the display, press the PSCAN and RBDS buttons again simultaneously and hold them down until the word "SAFE" appears in the display.
5) release buttons. Soon afterwards, a frequency will displayed.
6) THE RADIO CAN NOW BE USED AGAIN.
Repeat all the steps above if the radio is failed to pick your code
Good luck
In the Audi booklet there is a number u must enter or call Audi dealership with Vin number
No such thing.
get spare key
yes on the back of the radio.
Insert metal shimms into the radio to relese the radio.
http://www.ibiblio.org/tkan/audi/radios/concert.html
etched in the rear glass
Radio antenna (aerial) is incorporated in the rear window
The fuse box on a 2005 Audi A4 is located under the dash, near the hood release. It contains fuses for the horn, wipers, and radio.
I have lockedmy keys in the ignition and doors are locked how do i open it
your code is unique to your car... you'd have to get it from the dealer if you lost it.
B7 Audi A4 C6 Audi A6 ~200kg