A3car19tdi Posted November 3, 2023 Share Posted November 3, 2023 Hello there. I have an a3 2009. 1.9tdi with 120k on it. Yesterday the air bag light came on and stayed when I started up. Just wondered if there are any common faults or things I can try ? Many thanks Quote Link to comment Share on other sites More sharing options...
Magnet Posted November 3, 2023 Share Posted November 3, 2023 Under-seat connections can be an issue due to dust etc. Worth getting some contact cleaner and giving them a good spray, but DO NOT disconnect OR wiggle them too much, or you run the risk of the air bags going off. Kind regards, Gareth. Quote Link to comment Share on other sites More sharing options...
A3car19tdi Posted November 4, 2023 Author Share Posted November 4, 2023 I tried a scanner tool and it came up with this. Does it narrow it down in anyone's mind ?? Quote Link to comment Share on other sites More sharing options...
gordonliverpool Posted November 4, 2023 Share Posted November 4, 2023 I had this problem in 2007 A3 and it was a broken wire in offside front door loom. Auto electician sorted it in 30 minutes. Good luck. Quote Link to comment Share on other sites More sharing options...
cliffcoggin Posted November 5, 2023 Share Posted November 5, 2023 Broken wires in the driver's door, usually in the rubber bellows between door and frame, are a common problem, so Gordon's suggestion is worth pursueing. It most often affects the door locks and windows. Quote Link to comment Share on other sites More sharing options...
A3car19tdi Posted November 5, 2023 Author Share Posted November 5, 2023 Checked the door sensor. They looked ok as far as that goes. Decided to check the wiring in the rubber booty between the door and chassis........... Oh dear ..Wheres my soldering iron. Quote Link to comment Share on other sites More sharing options...
Solution A3car19tdi Posted November 5, 2023 Author Solution Share Posted November 5, 2023 Far short of getting a new door loom I suppose cut solder and extend where needed. Just thought I'd put a few pictures up incase anyone else has this. Probably explains why the heated mirror stopped working too. Airbag light gone out now (But had to reset with obd2 scanner) 1 Quote Link to comment Share on other sites More sharing options...
cliffcoggin Posted November 5, 2023 Share Posted November 5, 2023 Congratulations, and thanks for posting the solution. Quote Link to comment Share on other sites More sharing options...
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