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Home >> BMW >> 2011 >> 1M >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - 1-Series >> Restraints System - Functional Description >> Crash safety module >> Notes for Service department >> Diagnosis instructions

Diagnosis instructions

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

The ACSM control unit stores data in a non-erasable memory after a triggering of the safety system. After 3 crash signals, the data memory is full. The airbag warning lamp lights up. The ACSM control unit must be replaced.