SRS malfunction, C220, 2007 w203

[merc07]

Another day, another fault.

Shows SRS message on the dash and the icarsoft shows component R12/6 left rear ETR ignition squib has short circuit to ground.

I can erase the code but it comes back within a few miles of driving.

Any ideas or do I need more info from Star ?

 

[Dodipops]

Broken wiring through the door hinge to the airbag on that door??

 

[merc07]

Broken wiring through the door hinge to the airbag on that door??

It's an estate, and as far as I have managed to Google, the error is for the seatbelt tension..