BMW 1 series - E88
BMW 3 series - E93
BMW 6 series - E64
This controller is essential member/subsystem of vehicles safety system, and is responsible to detect and activate guards for rear passengers in case of cars rollover.
Often, when cars battery is replaced or reset, or gets flat, this controller goes bad, and safety system (Airbag module, also known as MRS or ACSM) registers error:
9402 Rollover-protection controller: internal fault
ATTENTION!
This listing is for the REPAIR OF YOUR MODULE ONLY!