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

Necessary preliminary tasks: 

• Disconnect the NEGATIVE BATTERY CABLE 

Fold back insulation sheet (1) in direction of arrow.

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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.

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Installation note: 

Make sure all plug connections are correctly latched.

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).

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Replacement: 

Carry out PROGRAMMING/CODING .