Changedthe key fob/shell with New one as mine was like been through a war and ended up in SAFE mode. A4 B7 2.0T | HPFP upgrade + FMIC | BSR Stage II + exhaust + HFC | 3.0TFSI Throt. Body | RS4 fuel contr., PRV + S3 inj., G247 + DW300c | GFB DV+| 034 RSB + all arms and mounts | S4 brakes | B12 Bilstein suspension + H&R Ihave recently picked up an A4 2005, previous owner changed battery in the key and since then remote buttons on the key havent worked. Sure enough, ive tried to Its not an Audi as reference, however its still within the same parent company, but it cost over $200 to replace a key to a Jetta when I had one, and this was over five years ago, and for a much simpler key. My Audi sales guy said it runs just shy of $400 to replace one for the A4 and the Q5 I have. Reply Like. 11-22-2010, 07:50 PM. ifnot have you need write with one key in ignition , and other key in the door lock. first try open the car with the driver door lock, and put the key in the ignition and press close an open botoom in the remote key. regards. Reply. Pages (2): 1 2. Above catalogue include models and sub-models in one list; E.g. list of the keys for Audi A4 include keys for A4 Allroad, S4, RS4 etc. ☛ For ease of use, data about operating frequency at above list, are such as the description at the original Remote Key / Transmitter. Thismust have been what caused the keys to lose their programming to start with. The confusing thing is that with the B8 A4 and A5, the remote is automatically reprogrammed everytime the key is placed into the dash slot and the car turned on. This was not happening with mine. I was out of options. Iswitched to the B7 key and It is beautiful. I love everything about it but lately it has been pissing me off. It has been acting up like, I would drive somewhere, park, lock the car with the key, then when I would come back to the car it wouldn't unlock with the remote, only when I used the key in the door. Then I would drive home and it wouldn't MakeDealer Key. Learn Key. Step 1. Read IMMO Data. IMMO programming->Europe->Audi->Select by Type->5th Generation Immobilizer System. Press Start programming. Select Read BCM data->Read by OBDII-> Read BCM2 data (OBDII) Insert working key into ignition and switch on before continue. If working key is already in WLnJt0.