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Home >> BMW >> 2014 >> M6 2D Convertible, Standard Trans >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Repair - F12 >> Electronic Components >> 34 52 121 Removing And Installing/Renewing ICM Control Unit

34 52 121 Removing And Installing/Renewing ICM Control Unit

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD protection).
WARNING: The sensor system for triggering the airbag is installed in the ICM control unit!
The battery must be disconnected before removing the ICM control unit (ICM control unit de-energised)!
There is a risk of the airbag being triggered inadvertently if this requirement is disregarded!

Necessary preliminary tasks: 

WARNING: Make sure that the negative battery lead is disconnected!
There is a risk of the airbag being triggered inadvertently!
Fig 1: ICM Control Unit, Plug Connection, Nuts
G10045942Courtesy of BMW OF NORTH AMERICA, INC.

Undo nuts (1) and raise ICM control unit (2).

Release plug connection (3) and remove ICM control unit (2).

Installation note: 

Replace self-locking nuts.

Tightening torque 34 51 2AZ .

IMPORTANT: Do not trap any electrical wires when installing ICM control unit!

After removing and installing ICM control unit: 

After the repair work has been completed with the diagnosis system:

After replacement of the ICM control unit: 

Vehicles built before 03/2012: