I have a 2004 530i E60 with faulty ECU,
I've tried refreshing three times and still can't get rid of the problem. .
All SBSL and SBSR-related airbag and seatbelt faults are throwing errors. INPA believes there are fiber optic wires, but I don't believe the car has them . In DIS, all modules show the correct current. Is the INPA Pre-drive Check required? Mine displays complete through stage 2, but never completes stage 3.
Any assistance is much appreciated.
Thank you for reaching out. We do repair ECU Here is the link https://www.upfix.com/product-category/repair-return/engine-control-repair/