Remove the BDC control unit

Preliminary work 

• Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING RIGHT FOOTWELL TRIM .
• Refer to REMOVING FRONT ENTRANCE COVER STRIP .
• Refer to REMOVING THE SIDE TRIM PANEL IN THE FOOTWELL AT THE RIGHT-HAND A-PILLAR .

• Fold the carpet (1) to the side.
• Release screw (2) the cover (3).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Loosen the detents (1).
• Guide cover (2) out in arrow direction.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Unlock and disconnect all connectors (1).
• Swivel the BDC control unit (2) slightly in the direction of the arrow.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Unlock and disconnect all connectors (1).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Guide out the BDC control unit (1).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Unlock and disconnect the connector of the positive battery cable (3) on the BDC control unit (4).

  It is essential to observe the sequence: 

  1. Release lock (1) arrow direction.
  2. Disengage the detent (2) on positive battery cable connector (3).
  3. Remove the connector of the positive battery cable (3) in arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.