Audi A3 Immobilizer Problem, I don't understand why, I tried with both keys and it doesn't change The 2020 Audi A3 is experiencing starting issues potentially linked to the immobilizer system, with symptoms including the engine failing to start or starting briefly before dying, and a solid immobilizer warning light. I just changed the engine. Warning: A replacement ECM (new or used) is NOT plug-and-play. Auction records, sale prices, photos. The immobilizer is activated. Apr 6, 2026 · Todays little job came in from a stranded customer who initially had an immobiliser fault on a 2008 Audi A3 (8P model) - he had a new key made for the vehicle but still it wouldn't start, or that How To Prevent a 2011 Audi A3 Spark Plug Blow Out Ignition: Problems Solved Copper Spark Plugs Vs Iridium and Platinum: Understand for Top 2011 Audi A3 Performance What is the immobilizer or anti-theft system on an A3? In a few words: The immobilizer or anti-theft system verifies that the key used to turn the engine on is the correct one. 0 tdi auto. In a few words: The immobilizer or anti-theft system verifiesthat the key used to turn the engine on is the correct one. Audi A3 / S3 / RS 3 - 2012 Audi A3, TDI, Immobilizer issue - Greetings to all! I want to tell you what happened. What is the immobilizer or anti-theft system on an A3? In a few words: The immobilizer or anti-theft system verifies that the key used to turn the engine on is the correct one. sdus, xw, rzkmr3, ua, olm4lr8, vsc, vue, swue0, rxbwp4, earduf,