Removing the acoustic cover of the oil sump

WARNING: Car may slip off the vehicle hoist where components are supported.
Danger! Immobilization period-threatening injuries!

Secure the vehicle hoist against lowering and lifting.
Make sure that the vehicle does not lift off the mounting plates on the vehicle lift.

WARNING: Vehicle may slip off the vehicle hoist if the vehicle hoist is handled incorrectly.
Danger! Immobilization period-threatening injuries!

Observe safety instructions on raising the vehicle using a vehicle hoist.
For additional information see: RAISING THE VEHICLE WITH A VEHICLE LIFT .

WARNING: Car may slip off the vehicle hoist if the weight is distributed unevenly.
Danger! Immobilization period-threatening injuries!

Ensure there is a specific weight compensation on the car.

WARNING: Heavy component falling down or tipping.
Danger! Immobilization period-threatening injuries!

Before lowering or removing the front axle: Secure the engine in the installation position.
For additional information see: SECURING ENGINE IN INSTALLATION POSITION (RWD) (430I COUPE/CONVERTIBLE/GRAN COUPE SEDAN) or SECURING ENGINE IN INSTALLATION POSITION (RWD) (M440I COUPE/CONVERTIBLE/GRAN COUPE SEDAN) .

WARNING: Working on 12 V electrical system.
Risk of short circuits! Risk of fire!

Make sure that there is no charger connected to the jump start terminal in the engine compartment.
Detach battery ground lead from battery.
For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.

NOTE: RISK OF DAMAGE
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS).
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults.

Detach battery terminal from battery pole by carefully shifting to and fro. Do not pry off using a tool.

Preliminary work

Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
Refer to REMOVING THE LATERAL HOOD SEALS .
Refer to REMOVING THE SIDE PANEL SEAL .
Refer to RELEASING THE WIRING HARNESS SECTION ON THE LEFT SHOCK TOWER .
Refer to RELEASING THE WIRING HARNESS SECTION AT THE RIGHT SHOCK TOWER .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE CLEAN AIR PIPE WITH THE RESONATOR .
Refer to REMOVING THE FRONT LEFT AND RIGHT WHEELS .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR .
Refer to IF INSTALLED: REMOVING THE UNDERBODY PROTECTION OF THE STEERING SYSTEM .
Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
Refer to REMOVING REAR UNDERBODY PROTECTION .
Refer to REMOVING THE BOTTOM WHEEL ARCH COVER ON THE LEFT AND RIGHT .
Refer to REMOVING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER .
Refer to REMOVING THE REAR SECTION OF THE FRONT WHEEL ARCH COVER FRONT .
Refer to MOVE THE ENGINE TO THE INSTALLATION POSITION .
Refer to DETACHING STEERING SHAFT AT BOTTOM FROM STEERING GEAR .
Refer to DETACHING THE WIRING HARNESS OF THE EPS FROM THE FRONT AXLE SUPPORT .
Refer to RELEASING THE LINE CONNECTION TO THE RIDE HEIGHT SENSOR .
Refer to DISCONNECTING THE LEFT AND RIGHT ANTI-ROLL BAR LINK FROM THE ANTI-ROLL BAR .
Refer to PARTIALLY REMOVING THE LEFT AND RIGHT BRAKE VENTILATION DUCT .
Refer to PREPARING THE SPECIAL TOOL .
Refer to LOWERING FRONT AXLE SUPPORT .

Precondition

Battery earth leads are disconnected.

Unlock plug connection (1) and disconnect.
Loosen nut (2) .
Guide the positive battery cable (3) out of the clamp (4) and lay to one side.

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Unlock and loosen the clamps (1) .
Guide out the wiring harness section (2) for the automatic transmission and place it aside.

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Detach all expanding rivets (1) .

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Feed out the acoustic cover (1) toward the rear bottom and remove.

Courtesy of BMW OF NORTH AMERICA, INC.