VAG seatbelt pretensioner lost comms with control module.

[ohreally]

Following a repair unrelated to seatbelts, I get a brief pop-up informing that "proactive passanger protection restricted"?

Conducting a scan I find...

2 Faults Found:
12680960 - No Communication with Control Module for Seat Belt Tensioner; Front Right
U017F 00 [00001001] - -
[New feature! Extended UDS fault detail is only supported by current gen. interfaces]
Confirmed - Tested Since Memory Clear
13650688 - Local data bus
U104B 00 [00001000] - Implausible signal
[New feature! Extended UDS fault detail is only supported by current gen. interfaces]
Intermittent - Confirmed - Tested Since Memory Clear


There have been no impact events. I am unable to reset.

Any ideas on way forward?

Car is 2015 MQB VW Golf.

Tia.

Edited by ohreally on Tuesday 28th May 23:38

[Abbott]

What was the repair?
If it was in the area at the bottom of the B Pillar they may have done something related to the seatbelt connector.
If it was in the area of the bulkhead/tunnel area they may have done something related to the Safety ECU although if that was the case there would be a lot more warning flags

[ohreally]

Repair was a heater matrix replacement.

[snafu10]

Check out plug on seat belt may have become loose or wiring damaged ,when unplugged ecu sees open circuit {high resistance}

[Richard-D]

No point looking at plugs on seat belt etc. The fault is a communication failure between computer modules. I would be looking for the location of the seatbelt tensioner control module and checking it is connected. If it is then I would unplug it and check it has power, ground and data (canbus) at the connector.

[ohreally]

@Richard-D can you advise where the control module is located in this instance.

[stevemcs]

They are normally hidden under the centre console.