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

NOTE: DC/DC converter in vehicles with automatic start-stop function.
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 tasks::

Remove LOWER SECTION OF MICROFILTER HOUSING

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

Unlock locks (2) in direction of arrow.

Remove cover (3).

Fig 1: Removing Cover
G04751288Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Removing DC/DC Converter
G06855303Courtesy of BMW OF NORTH AMERICA, INC.