12 90 100 Replacing fan for electronics box (N52)

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION) .

Necessary preliminary tasks:

Switch off ignition
Disconnect battery negative terminal
Remove right MICROFILTER HOUSING
Remove AIRBAG CONTROL UNIT

IMPORTANT: Follow instructions for removing and installing electronic control units.

Unlock cover (1) with slide (3).

Unfasten screws (2).

Remove electronics box cover (1).

Installation:

Engage electronics box cover (1) correctly in hinges.

Security version:

Remove DME armour plating.

Fig 1: Identifying Electronics Box Cover And Screws

G04740389

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections (1 to 6).

Remove DME control unit.

Fig 2: Identifying Plug Connections

G04740390

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug connection (1) on fan for electronics box and disconnect.

Release screws (2) on device carrier.

Lift out device carrier (2).

Fig 3: Identifying Screws On Device Carrier

G05476043

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock vent duct (1) and remove in direction of arrow.

Remove cover (2) in direction of arrow.

Fig 4: Identifying Vent Duct And Cover

G05476044

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts.

Pull device holder (1) approx. 3 cm towards rear.

Fig 5: Identifying Device Holder And Nuts

G05476045

Courtesy of BMW OF NORTH AMERICA, INC.

Remove air duct (1) from device holder (2).

Fig 6: Identifying Air Duct And Device Holder

G05476046

Courtesy of BMW OF NORTH AMERICA, INC.

Turn connecting piece (1) to right and remove.

Fig 7: Turning Connecting Piece

G05476047

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws and remove fan (1) in upwards direction.

Fig 8: Identifying Screws And Fan

G05476048

Courtesy of BMW OF NORTH AMERICA, INC.

Check function of DME.