12 90 ...Removing and installing/replacing electronics box

Read and comply with notes on protection against electrostatic damage (ESD protection).

Follow instructions for removing and installing control units!
Necessary preliminary tasks:

Slacken nut (1).

Release screw (2).

Remove heat shield (3).

Release screw (1).

Lay filler neck (2) for windscreen washer fluid to one side.

Release screws (1).

Tightening torque 12 90 2AZ.

Remove electronics box cover (2).

Unlock all plugs (1) from control unit and detach.

Unclip grommet hold-down device (2) and remove.

Detach rubber grommets (3) from electronics box. Place wiring harnesses to the side.

Installation note:

Make sure grommets are correctly fitted (watertightness).

N54 only:

Unlock plug (1) from electronics box fan and pull off.

Release screws (1).

Tightening torque 12 90 1AZ.

Pull off air duct (2) from the electronics box.

Feed electronics box (3) out upward and remove.

Installation note:

When replacing electronics box, modify DME or DDE control unit.

Installation note:
When installing the electronics box, insert guide (1) on engine support.
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