24 34 564 Replacing Mechatronics (GA8HP45Z) (N55 engine)

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

IMPORTANT:

Do not let skin come in contact with transmission oil and do not inhale transmission oil vapors.
Wear protective gloves.
Ensure adequate ventilation.

NOTE: After completing repair work:

Load specific data status with the BMW diagnosis system

IMPORTANT:

In vehicles with Automatic Start/Stop, an oil reservoir is installed in the Mechatronics.

After completing work, check TRANSMISSION OIL LEVEL .

Use only approved TRANSMISSION OIL .

Failure to comply with this requirement will result in serious damage to the automatic transmission!

IMPORTANT: Read and comply with notes on PROTECTION AGAINST DAMAGE FROM ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

Necessary preliminary tasks:

Remove rear UNDERBODY PROTECTION .
Remove exhaust bracket.

The graphic shows a vehicle with rear-wheel drive.

Remove panels (2).

Fig 1: Identifying Panels

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IMPORTANT: Cable assembly is discontinued after 04/2010.

Release screw (2).

Disconnect cable (1).

Installation note:

Adjusting cable:

Release screw (2).
Bring release lever (3) into contact with selector shaft by pressing slightly. Distance B=0 mm.
Adjust cable (1) by means of holder until distance A ≥ 1 mm is obtained.
Tighten down screw (2)

Fig 2: Releasing Screw
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IMPORTANT: Mechatronics can be destroyed by static discharges. Therefore the contacts inside the connector must not be touched. Insert special tool immediately after operation.

Unscrew connector (1) and disconnect.

Fig 3: Releasing Connector

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Insert special tool 24 2 390 in sealing cup (1).

Fig 4: Inserting Special Tool 24 2 390 In Sealing Cup

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Remove TRANSMISSION OIL SUMP .

Remove OIL RESERVOIR .

Release screw (1) and unlock sealing cup with slide (2).

Tightening torque 24 30 4AZ .

Fig 5: Removing Sealing Cup With Slide Screw

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Note position of sealing cup.

Pull out sealing cup (1).

Installation note:

Replace sealing cup (1).

Fit sealing cup in position (lug on inside). Turn until lug engages in groove of transmission. Slide in sealing cup.

Lug on sealing cup must not be damaged!

Fig 6: Pulling Out Sealing Cup

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IMPORTANT: Only for vehicles without oil reservoir:

Release all screws (1 and 2).

1 = M6 x 59 mm
2 = M6 x 20 mm

Carefully remove Mechatronics.

Installation note:

Replace all screws (1 and 2).

Fig 7: Identifying Mechatronics Screws

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Replace O-rings for oil ducts on the Mechatronics unit and wet with automatic transmission fluid.

IMPORTANT: Only for vehicles with oil reservoir:

Release all screws (1 and 2).

1 = M6 x 59 mm
2 = M6 x 20 mm

Carefully remove Mechatronics.

Installation note:

Replace all screws (1 and 2).

Replace O-rings for oil ducts on the Mechatronics unit and wet with automatic transmission fluid.

Fig 8: Identifying Mechatronics Screws

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Installation note:

Replace gasket (1).

Coat new gasket with automatic transmission fluid and install.

Fig 9: Identifying Automatic Transmission Gasket

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Screw in guide pins 24 1 430 at screw position 4 and 9.

Fig 10: Screwing Guide Pins 24 1 430

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Fit Mechatronics unit.

Fit shift claw (2) in gearshift shaft (3) by pressing release lever (1).

Fig 11: Fitting Shift Claw In Gearshift Shaft

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Screw down wing nuts as far as they will go on to the Mechatronics unit.

Fig 12: Screwing Down Wing Nuts

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Observe different screw lengths.

Failure to comply with this requirement will result in serious damage to the automatic transmission!

Installation note:

Insert screws 8 and 14 until screw heads make contact.

Remove guide pins and fit remaining screws.

Tighten down screws in order 1...18.

Tightening torque 24 30 4AZ .

IMPORTANT:

In vehicles with an oil reservoir, the screw 17 (M6 x 59 mm) must be secured with the oil reservoir.

Tighten in the order of 1...16 and 18.

Tightening torque 24 30 4AZ .

Installation note:

Install OIL RESERVOIR if necessary.

Fig 13: Automatic Transmission Valve Body (Mechatronics) Screws Tightening/Loosening Sequence

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