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

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 335xi, 2013 BMW 335is, 2013 BMW 335i, 2012 BMW 335xi, and 2012 BMW 335is. However, it is still accessible from the selected car via links, so may be relevant.

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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 petrol engine vehicles

IMPORTANT: Read and comply with INFORMATION ON PROTECTION AGAINST DAMAGE FROM ELECTROSTATIC DISCHARGE .

Necessary preliminary work:

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: Unlocking DC/DC Converter 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: Removing DC/DC Converter (Diesel Engine)

Courtesy of BMW OF NORTH AMERICA, INC.

Petrol 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: Removing DC/DC Converter (Petrol Engine)

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).

IMPORTANT: Do not mix up plug connections (2, 4)!

Fig 4: Removing DC/DC Converter Tabs

Courtesy of BMW OF NORTH AMERICA, INC.