61 42... Removing and installing/replacing DC/DC converter

There are two versions:

• Without additional bracket for diesel engine vehicles
• With additional bracket for gasoline engine vehicles

Depending on the equipment, one or both versions are installed in the M3

Necessary preliminary work 

Remove lower section of microfilter housing (all except M3)

Remove RIGHT UPPER SECTION OF MICROFILTER HOUSINGM3 

Unlock fasteners (1) from below and slide upwards approx. 10 mm.

Unlock locks (2) in direction of arrow.

Remove cover (3).

Fig 1: Opening Locks

Courtesy of BMW OF NORTH AMERICA, INC.

Diesel engine vehicles (without additional bracket): 

Release lugs in direction of arrow. Remove DC/DC converter (1) by pulling upward. Disconnect plug connection (2).

Fig 2: Releasing Lugs (Diesel Engine Vehicles)

Courtesy of BMW OF NORTH AMERICA, INC.

Gasoline engine vehicles (with additional bracket): 

Release lugs in direction of arrow. Remove DC/DC converter (1) by pulling upward. Disconnect plug connection (2).

Fig 3: Releasing Lugs (Gasoline Engine Vehicles)

Courtesy of BMW OF NORTH AMERICA, INC.

M3: 

Release tabs in direction of arrow and remove DC/DC converter with additional bracket (1) upward. Disconnect plug connection (2).

Release tabs in direction of arrow and remove DC/DC converter without additional bracket (3) upward. Disconnect plug connection (4).