I had an accident and my airbags enabled and i changed airbag unit and now i have some errors for airbag system and seat belts. How to fix them to disappear ?
Luckily unlike most makes, BMW airbag modules are allowed 3 "hard" resets by OBD2 (codes stored from accident).
You will need a proper scan tool or a j2534 tool to use ISTA from bmw to perform the reset.
If the module has had 3 hard resets already then the only options left are to either manually clear the codes in the eeprom memory or replace the module.