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Airbag light and Unlock lock issue - Think they're related


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I have these error codes. I am very confident they are related now as I was having intermittent lock issues.

I can't lock my door sometimes when I close the drivers door, when I open it suddenly my car can be locked and unlocked. Tried the keyfob tricks etc, none worked.

Then recently my airbag light has come on. I cleared it but it came back on straightaway.

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  • Admin

The door lock one is likely a mechanical problem with the door lock that prevents it from reaching it full lock position at times.

I would clear it and see if it come back.

Airbag -- Fault codes 12, 13, 28, 29, 40
Ignition circuit, driver's side airbag
Possible cause of fault
- Short circuit to B+/ground or open circuit in the wiring between the driver's side airbag unit and the airbag triggering unit
- Driver's side airbag faulty
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  • Admin

You need a special tool (box) (and a PST2 or PIWIS tester) to test the airbag trigger circuit (airbag out).

Testing the airbag itself also requires a special tool and lots of caution. A job perhaps best left to a competent Porsche shop.

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