If being replaced: remount control units

• Unlock the locks (arrows).
• Feed out and remove the integrated supply module (PDM) (1).
• Guide out and remove DME control unit (2).
• Replace the control unit holder (3).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Insert and install the Digital Motor Electronics control unit (2) into the new control unit holder (3).
• Feed in and install the integrated supply module (PDM) (1) in the new control unit holder (3).

  The locks (arrows) must engage audibly.

Courtesy of BMW OF NORTH AMERICA, INC.