Special tools required:

WARNING: This page is about a different variant/trim than selected.

24 2 390. See 24 2 390 COVERING CAP

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection)! See 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE)

Necessary preliminary tasks:

Read out DME fault memory
Switch off ignition
Disconnect battery negative lead. See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD.
Remove microfilter housing. See 64 31 081 REMOVING AND INSTALLING/REPLACING MICROFILTER HOUSING
Remove intake air manifold. See 11 61 050 REMOVING AND INSTALLING AIR INTAKE MANIFOLD (N52)

Unclip Bowden cable for engine bonnet/hood actuator from transverse reinforcement (1).

Release screws on left and right sides. Tightening torque 51 71 4AZ. See 51 71 SEALS AND LOOSE BODY PARTS

Remove cross-brace (1).

Lever out expander rivet.

Remove gasket (1).

Feed out partition (3) and remove.

Fig 1: Detaching Electronics Box Cover From Fixture

Courtesy of BMW OF NORTH AMERICA, INC.

Lever out expander rivet.

Release locks in direction of arrow.

Feed out fresh air duct (1) and remove.

Fig 2: Identifying Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Open retainers.

Release lock (1) in direction of arrow.

Remove cover (2).

Fig 3: Identifying Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws and remove retaining bar (1).

Unlock upper section (2) of partition seal in direction of arrow and remove.

Release grommets (3) for wiring harnesses from lower section of partition seal and from electronics box.

Installation:

Make sure grommets are correctly seated (watertightness).

Fig 4: Identifying Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Raise control unit (2) slightly.

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

Fig 5: Identifying Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Long plug:

Unlock plug on control unit and disconnect.

Unlock tab (1), pull contact carrier (2) in direction of arrow out of housing.

Short plug:

Unlock slide (2) in bore holes (1) and pull out of housing.

Unlock tab (3), pull contact carrier (4) in direction of arrow out of housing.

Unlock and disconnect all plug connections of engine wiring harness section in electronics box.

Unlock tabs (1) and pull contact carrier (2) out of housing.

REFERENCE CHART

Work step	Note:
Unlock plug connections on control sensors and disconnect
Unlock plug on alternator and disconnect
Unlock plug connection on knock sensors and disconnect
Unlock plug on crankshaft sensor and disconnect
Unlock plug on starter motor and disconnect
Remove rear underbody protection. See 51 47 491 REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION
Unlock plug connections on monitor sensors and disconnect
Unlock plug on oil condition sensor and disconnect

Unlock and disconnect plug (1) by turning.

Release wiring harness from holders.

Insert special tool 24 2 390 in sealing sleeve. See 24 2 390 COVERING CAP

These tasks are described in Notes on mechatronics. See 24 34... NOTES ON MECHATRONICS (GA6HP26Z/GA6HP32Z/GA6HP19Z)

(Important: Observe important note)

NOTE: Check stored fault messages.
Now clear the fault memory.