Remove the BDC control unit

Preliminary work 

• Refer to DEACTIVATING VEHICLE ELECTRICAL SYSTEM .
• Refer to REMOVING THE FRONT RIGHT DOOR SILL COVER STRIP .
• Refer to REMOVING RIGHT FOOTWELL TRIM .
• 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.