Verified VCDS User
- Nov 19, 2020
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- Saudi Arabia
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What about hex08 being 5 bytes instead of originally 4 bytes? Can this addition affect other modules?Providing all of the modifications were made with VCDS I'd say the current condition coding is OK. Leaving Byte 4, Bit 2 Remote Control with "Terminal 15 ON" inactive enabled will not cause communication issues.
Moving forward, I believe Dave is correct and something on the Powertrain bus is taking down communication. You also have a Comfort Bus problem but I doubt they are related and that bus isn't nearly as important.
I rarely ever suggest starting at the Airbag controller but since the Fault Frequency is 254
01321 - Control Module for Airbags (J234) 008 - Implausible Signal - Intermittent Freeze Frame: Fault Status: 00101000 Fault Priority: 4 Fault Frequency: 254
.. you may want to inspect that module first. I would look for signs of tampering and water ingress/flood damage. If obvious problems are not found at the Airbag module I would unplug it BUT only if you are the one driving it to see if things improve with all of the Status: Sporadic communication error issues. I would not give the car to a family member to drive with disabled Airbags.
If you are aware of any repair or damage history that may be causing all of the communication problems please let us know before you unplug or inspect modules! Also, make sure you clearing ALL DTCs in the car with VCDS in-between the Auto-Scans and test drives otherwise we will be looking at old issues that are not reoccurring.
Perhaps your suggestion is correct because Passenger Airbag light flickers sometime. I will try to solve it and then look into the issue of not automatically pairing my Android phone via Bluetooth.