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    A3 comfort data bus in single wire mode + central locking not working

    Just wanted to conclude 1. Door unlocking issue was cause by a low key battery 2. single wire mode was caused by a component on HVAC Unit which had came of the soldered joint. 3. I've fixed all my doors. Every single actuator was bad. Dont even think its worth trying to fix them cause the...
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    A3 comfort data bus in single wire mode + central locking not working

    FIXED CANBUS SINGLE WIRE ISSUE So I unplugged the hvac unit which caused the canbus to go back into 2 wire mode. Instead of wasting money buying a new module I took it out which was simple to do and inspected the circuit board. Looking closely I noticed one of the components had came off the...
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    A3 comfort data bus in single wire mode + central locking not working

    Positive progression on the car using infomation from this link https://autotechnician.co.uk/tag/comforts-network/ Iv disconnected the HVAC yellow far left wiring loom connector which is linked to the comfort databus and now my comfort databus has gone into 2 wire mode which is brilliant. Will...
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    A3 comfort data bus in single wire mode + central locking not working

    Update : even though the lock button always worked. I noticed the red led light on both of my keys wouldn't light up. I thought id change the battery in one key. Now unlock for that key has worked ever since. Trying both keys together figured id put the unlock not working down to a bad key...
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    A3 comfort data bus in single wire mode + central locking not working

    just fixed my abs code so they have gone. just done a new scan, i clicked the unlock and lock button before scanning car to show up any associated codes. Monday,23,January,2023,21:03:30:28437 VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64 VCDS Version: 22.10.0.1 (x64) Data...
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    A3 comfort data bus in single wire mode + central locking not working

    Hello bud thanks for responding. Just at work il let you know in an hour or so once am home. Il clear all my codes, try to unlock the car and do a scan and post it in here.
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    A3 comfort data bus in single wire mode + central locking not working

    hello I know this is a lot to read but any help is appreciated. so I've just bought a 2009 audi a3 black edition which has been having this issue with the central locking. I have read forums etc and got some idea with what's going on but I'm still struggling and need some help on what...