Removing and installing/replacing carrier for instrument panel (M4 Coupe, M4 Convertible)

Necessary preliminary work:

Remove INSTRUMENT PANEL TRIM .
Detach STEERING COLUMN from dashboard carrier
DETACH PLUG CONNECTIONS ON AIRBAG CONTROL UNIT .
Unclip FRONT POWER DISTRIBUTION BOX .

Depending on version:

Unfasten plug connection (1) and disconnect.

Feed out wiring harness (2) towards passenger compartment.

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Undo bolts (1) on bulkhead.

Tightening torque 51 45 4AZ .

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Unlock and detach plug connections (1 and 2).

Feed out cable (3).

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Release nuts (1) and remove holder (2).

Tightening torque 51 45 3AZ .

Unscrew nut (3).

Tightening torque 51 45 5AZ .

Installation note:

Instead of nuts (3) threaded bolts can come loose from heating and air-conditioning unit. Before installing the carrier, screw threaded bolts into the heating and air-conditioning unit.

Release nuts (4) on A-pillar.

Tightening torque 51 45 2AZ .

Release screws (5) by approx. 2 turns.

Tightening torque 51 45 1AZ .

Carefully pull support (6) to the rear and if necessary unclip further cable clips.

Remove carrier (6).

Installation note:

Replace compensating element (1) every time after dismantling the support.

Fully screw in installation plate (2). When applying tightening force to the screw, installation plate (2) is automatically adjusted.

Make sure foam ring (3) is fitted correctly.

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Replacement:

Remount airbag control unit (1).

Remount wiring harness (2).

If necessary, remount non-existing retaining bracket on new part.

US version:

Remove AIRBAG MODULE FOR DRIVER'S KNEE PROTECTION .

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