My glow plug module threw a LIN bus fault, but the car still ran fine with it active. You could swap the X5 one over just to rule it out however.
I had many DSC / IBS / Trans faults while trying to start when I had a bad DDE program by my tuner, I flashed the DDE back to stock and the car fired up. This could be an option as well, however the DDE may need to be swapped as your tune was working for some time, which means some corruption would have to have occurred.
Quote:
Originally Posted by Mik325tds
To rule out your tune causing all this it could be worth a try to reflash your DDE with ISTA-P or WinKFP, but that would mean sending the DDE out for tuning again afterwards.
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