FixVault
Home › BMW › 2012 › M3 2D Convertible, Standard Trans › Repair and Diagnosis › General Information › OEM General Information › Functional Description -- M3 Convertible › Restraints - Functional Description › Multiple Restraint System › Diagnosis instructions

Diagnosis instructions

NOTE: After 3 crash signals with triggering of the safety system, replace the MRS control unit.

The MRS control unit stores data in a non-erasable memory after a triggering of the safety system. The data is relevant to accident research (no access for service). After 3 crash signals, the data memory is full. The airbag warning lamp lights up. The MRS control unit must be replaced.

Notes on encoding/programming 

NOTE: Deactivating the acoustic seat belt warning

The acoustic seat-belt warning can be deactivated by encoding. This does not affect a legally prescribed seat belt warning.

NOTE: Coding the MRS control unit

After replacement, the MRS control unit must be coded.

About FixVault