12 14 550 Replacing control unit (DME): Replacement

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 328xi, and 2010 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Carry out PROGRAMMING/ENCODING .

IMPORTANT: It is absolutely essential to read out the fault memory with the BMW diagnosis system and to create a fault memory printout.

Switch off ignition.

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

Unlock locks (2) in direction of arrow.

Remove cover (3).

Fig 1: Unlocking Electronic Box Locks

G04751288

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector (1) and remove.

Release grommet (2) from electronics box.

Installation note:

Make sure grommet (2) is correctly seated in housing (watertightness).

Unlock control unit (3) and raise slightly.

Fig 2: Identifying Electronics Box Grommet, Control Unit And Connector

G04751291

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connectors (1) using slide in direction of arrow and remove.

Remove control unit (2).

Installation note:

Replacement:

Note control unit identification number and encoding.

Fig 3: Removing Control Unit Connectors

G04751292

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault messages.
Delete fault memory.