Remove and install (replace) control unit Rear Electronic Module (REM) (Except M4 Convertible)

Necessary preliminary tasks: 

• Disconnect the NEGATIVE BATTERY CABLE .

Unlock and disconnect all plug connections in area (1).

Unlock and disconnect positive battery cable (3). (Note removal instructions below)

Release screw (2).

Tightening torque 61 35 4AZ .

Remove control unit (4) from guides (5) in direction of arrow.

Installation note: 

Make sure all plug connections are correctly latched.

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock the positive battery cable connector: 

1. Loosen lock (1) in direction of arrow.
2. Unlock top positive battery cable connector (2) in direction of arrow.

   Courtesy of BMW OF NORTH AMERICA, INC.

3. Disconnect battery positive lead (2).

Replacement: 

Carry out VEHICLE PROGRAMMING/CODING .