How to reset Audi A3 radio after changing the battery of the car?

You need your radio code a 4 didget number should be on your sales documentation.The reset instructions are in your hand book page 36 .Regards Mick

I had a similar difficulty with the radio in my previous truck. I first concept is replaced into the radio, yet grew to develop into out that it replaced right into a foul battery connection. I wiped clean the terminals thoroughly and also the relationship factors of the cables to the body (floor) and constructive connections (starter, ignition, and relay field). not in any respect had any issues after this.

The dealer needs to input the code...They can look up the code by vin # in the parts department of your local dealer/.