The remote locking has stopped working on my A4 Convertible. The spare key has never worked since I've had the car and the main key just stopped working as few weeks ago, so I thought it's likely they just need re-pairing with the car. I was tossing up between buying VCDS or OBDeleven, and plumped for ODBeleven as it's significantly cheaper out of the box. Also, I don't have a laptop currently to warrant buying VCDS, so that'll have to come later.

I've tried pairing one of the keys, but keep getting the (00) Function Not Available, message. At this stage I'm trying to clear the memory of all key location (OBDeleven tells you to input the number 5 to clear key locations) It's during this that I get the message. 

I've checked the interweb and that error message reckons that function is not available on that module, which can't be correct, so I must be doing something wrong.

Any help would be greatly appreciated

Andy

Edited June 27, 2025Jun 27 by bettsaj

Try this mate, I don't know if it's applicable to your model and year but it worked perfectly for me so it might be worth a try.

2003 A6 C5 key reprogramming (two key method) - Audi A6 (C5) Forum - Audi Owners Club (UK)