61 35 275 Remove and install (replace) control unit Rear Electronic Module (REM)

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.

Fig 1: Disconnecting Positive Battery Cable

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.
3. Disconnect battery positive lead (2).
   Fig 2: Removing Top Positive Battery Cable Connector

   Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Carry out VEHICLE PROGRAMMING/CODING .