61 35 278 Remove/install Body Domain Controller (BDC)

Preliminary work needed: 

• Clamp off BATTERY LEAD FROM NEGATIVE CONNECTION POINT 
• Remove GLOVE COMPARTMENT
• Remove FOOTWELL SIDE TRIM PANEL ON A-PILLAR ON RIGHT .

Removal: 

Unlock the positive battery cable connector: 

1. Loosen lock (1) in arrow direction.
2. Unfasten catch (2) on positive battery lead connector (3).
3. Remove positive battery lead connector (3) in arrow direction.

Fig 1: Loosening Lock

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Unlock and disconnect all connectors (1) in marked area.

Release detents and pull control unit BDC (2) to the side out of holder.

Fig 2: Pulling Control Unit BDC To Side Out Of Holder

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Installation: 

Join control unit BDC (2) to the side in holder.

Connect all connectors (1) in marked area.

Fig 3: Pulling Control Unit BDC To Side Out Of Holder

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Lock positive battery cable connector: 

1. Join positive battery cable connector (3) against arrow direction.
2. Lock detent (2) to positive battery cable connector (3).
3. Close lock (1) against arrow direction.

Fig 4: Loosening Lock

Courtesy of BMW OF NORTH AMERICA, INC.