13 54 030 Removing and installing/sealing throttle assembly (M54)

Turn off ignition.

Observe instructions for disconnecting and connecting battery, refer to 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect battery negative lead from battery and lay to one side.

Remove intake filter housing, refer to 13 71 000 REMOVING AND INSTALLING INTAKE FILTER HOUSING (M54) .

Remove intake hose completely (between intake filter housing and throttle assembly).

Disconnect following plug connections:

Resonance Flap
Idle-Speed Control Valve

Fig 1: Disconnecting Resonance Flap And Idle-Speed Control Valve Plug Connections

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Disconnect following plug connections:

Oil Pressure Switch
Oil Temperature Switch

NOTE: For purposes of clarity, the power steering pump supply tank is not shown.

Fig 2: Disconnecting Oil Pressure Switch And Oil Temperature Switch Plug Connections

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Unlock plug (1) and detach from tank venting valve.

Fig 3: Unlocking Plug And Detaching From Tank Venting Valve

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Release screws (1) on cable duct mounting.

Fig 4: Releasing Screws On Cable Duct Mounting

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E46 only:

Unclip fuel lines and cable of oil level sensor out of holder (1) on oil dipstick guide tube.

Detach oil return line (2) from oil dipstick guide tube. Release screw (3) and remove oil dipstick guide tube.

Installation:

Replace sealing ring for oil dipstick guide tube.

Fig 5: Detaching Oil Return Line From Oil Dipstick Guide Tube (E46)

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All Cars:

Unlock plug (1) and detach from throttle assembly (3).

Release screws (2) and remove throttle assembly (3).

Fig 6: Removing Throttle Assembly

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Installation:

Replace sealing ring (1) between throttle assembly and intake manifold.

Fig 7: Replacing Throttle Assembly Sealing Ring

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Clearing Adaptation Values:

NOTE: A faulty throttle adjusts the adaptation values stored in the DME control unit. These adaptation values must be reset after the throttle assembly has been replaced.

Connect DIS Tester
Select vehicle type
Select "DME Motor Electronics MS43", carry out individual brief test
Continue with bottom right arrow
The "Fault pattern selection" window appears. Select "Function selection" (bottom left)
The "Function and component selection" window appears:
- Select "Service functions"
- Select "Drive"
- Select "Digital Motor Electronics"
- Select "Reset adaptations"
- Select "Test schedule" (bottom left)
The "Test schedule" window appears. Select "Reset adaptations"
Continue with bottom right arrow

For subsequent procedure, follow DIS instructions.

The new adaptation values are stored in the DME control unit after the engine is started for the first time.