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Home >> BMW >> 2015 >> Z4 sDrive28i, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Dual-Clutch Automatic Transmission - Repair (N54) -- Z4_E89) >> Double Clutch Transmission Control Unit >> 28 60 020 Replacing wiring harness (GS7D36SG)

28 60 020 Replacing wiring harness (GS7D36SG)

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: After completion of repair work, check TRANSMISSION OIL LEVEL .

Use only the approved TRANSMISSION OIL .

Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.

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

Necessary preliminary tasks: 

Release screw (1).

Fig 1: Identifying Clutch Screw
G11150750Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque: 28 10 6AZ .

Release aluminium screw (6).

Tightening torque: 28 10 11AZ .

Installation note: 

Replace aluminium screw.

Release combination sensor (2) from housing.

Disconnect connector (3).

Removing wiring harness (4) with earth terminal (5) from housing.

Fig 2: Identifying Combination Sensor Connector, Bracket And Screw
G11150751Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Guide earth terminal (5) carefully  through transmission connector bore.

Risk of damage to sealing surface.

IMPORTANT: To disconnect the combination sensor connector:

Press lock together in area (1) and simultaneously detach connector.

Fig 3: Identifying Combination Sensor Connector Area
G11150752Courtesy of BMW OF NORTH AMERICA, INC.