AudiA6 Avant 2.5 tdi AKE Quattro brakes update. A6 / S6 (C5 Platform) Discussion - Immobilizer Key Code - Dealer Only???? - 2001 2.7T build date 11/2000, just purchased, only had one key with it. Just want to confirm that I absolutely have to go to the dealer to get the immobilizer coded for a new key. I searched the forum and seems like I Re A4 Cabriolet Key Programming Issues - Immo Part of cluster or separate? The audi A4 B6 has an RB4 cluster , A4 B7 has an RB8 clusters are not compatible . RB4 is not encrypted RB8 is encrypted . Youdon't need Vagcom/VCDS to program remotes. Follow this procedure: Go straight to reply #5 Click here The important part is step 3 - the poster describes programming the number to suit the memory seat position, it's actually to store the remote # in the ECU. It is better explained here, but this link will take you off-forum. 3Take the key A remote and press the "UNLOCK" button ONCE only - alarm will 'beep'/lights flash, but door will remain locked. 4.Wait for a slow count of 10. 5.With key A, unlock and lock the door again (using the key not the remote). 6.Test the remote by pressing the "UNLOCK" button again - door should unlock. IFYOU HAVE ONLY 1 KEY !!! no trouble you still can reprogram your Audi Key.The answer for how to reprogram a VAG key, when fitting new battery to key, codes OriginallyPosted by LINDW4LL. According to ECS, there are two C5 avant remotes. One, ending in 231P, is the same part number as the B5 avant remote. The other is 231"M" and is listed for 2003+ C5 avants. Not sure as to any differences, but they look identical, and more importantly, they both have the same FCC ID. Theywill get inside your car, set it to "program" mode, and then synchronize the key fob with the car. Also, if the key fob is lost or destroyed, it's important first to find the key fob replacement, and then to program it to your vehicle's computer. Our team knows it all, and the job can be done faster than you think. Heyguys. Im new to this forum and have a major issue with my keys. Firstly hi. I have a A4 B7 model and I have two sets of keys that have recently lost synchronization to open and lock my car. I replaced the battery and re-synchronized (following the manuel) and nothing happened. I rang Audi 20055 Audi A4 Quattro 2.0T 6MT - APR - 034 - Custom 3" single exhaust - 17z Brembo - GFB - Alzor - Kumho - ST - Injen - Swift - Hyperco - ECS - Saikou Michi - PowerFlex - Podi Quick Navigation B7 A4 Return Top ImmobilizerProgramming: new key. Thread starter Lmannyr; Start date Mar 3, 2016; L. Lmannyr Veteran Member. Joined Mar 13, 2012 Location South Florida TDI 2005.5 VW Jetta TDI BRM Manual Mar 3, 2016 #1 I have a 2005.5 BRM. Using VCDS under the Immobilizer module, I can't adapt a NEW immobilizer 3 chip. I tried 3 different new zQrMW.