How to Remove an Audi A4 Stereo

1. Purchase audio removal keys at car audio dealers or from various Internet dealers. The set will include four keys.
2. Insert one key between the top of the stereo and the housing--an inch from the left corner. Insert a second key, also on the top, an inch from the right corner.
3. Insert a key between the bottom of the stereo and the housing--an inch from the left corner. Insert the final key under the bottom of the stereo an inch from the right corner.
4. Push all four key handles toward the outside of the radio. The two keys on the left will be pushed left--the two on the right will go right. This will release the clips that are holding the stereo in place.
5. Carefully pull the keys out. The stereo will come out with the keys. If for some reason the stereo doesn't come out on the first try, you may need to reinsert the keys and try again, as they may not have engaged the clips.
6. Disconnect the wiring harness from the back of the stereo. Simply press in the tabs and pull out the harness.