Removing the wiring harness section of the transmission wiring harness

NOTE: DANGER
High-voltage system.
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see:
SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
For additional information see:
NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

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 DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE SEAL FOR THE HOOD REAR .
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 LEFT AND RIGHT WIPER ARM .
Refer to REMOVING THE COWL COVER .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE CENTER COWL UPPER PART .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING ACOUSTIC COVER AT REAR .
Refer to REMOVING REAR UNDERBODY PROTECTION .
Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
Refer to IF INSTALLED: REMOVE THE TORSION STRUT ON THE RIGHT AND LEFT WHERE REQUIRED .
Refer to REMOVING COMPLETE EXHAUST SYSTEM .
Refer to REMOVING THE RETAINING PLATES .
Refer to REMOVING THE HEAT SHIELDS .
Refer to PARTIALLY LOOSENING THE PROP SHAFT .
Refer to REMOVING THE DME CONTROL UNIT .
Refer to REMOVING THE INTEGRATED POWER SUPPLY MODULE (PDM) .
Refer to REMOVING CONTROL UNIT BRACKET .

Wiring harness section of transmission wiring harness

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NOTE: RISK OF DAMAGE
Electrostatic discharge.
Damage to or destruction of electrical components.

Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
Read and comply with user information on using the associated special tool 12 7 060.
Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
For additional information see: NOTES ON ESD (ELECTROSTATIC DISCHARGE) PROTECTION .

NOTE: RISK OF DAMAGE
Damage to wires when disconnecting connectors and plug connections.
Sheared wires can cause a short circuit.

Do not pull on wires when disconnecting connectors and plug connections.

NOTE: TECHNICAL INFORMATION
Disconnecting control units may cause fault code entries and functional limitations. Fault code entries must be read out and deleted if necessary.

Unlock and disconnect connector (1).

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Unlock the lock (1).
Loosen screws (2).
Unlock plug connection (3) and disconnect.
Unlock plug connection (4) and disconnect.

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Unlock the plug connection (1) and detach from the air conditioning compressor.
Loosen the clamp (arrow).

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Unlock the plug connection (1) and detach from the starter motor.
Release the clamps (arrows).

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Release the clamps (arrows).
Remove wiring harness section (1) of the transmission wiring harness and set aside.

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Slightly lower the transmission

Support the transmission using special tools 2 219 012 and 0 495 498 (23 4 050) .
Secure the transmission with the luggage strap (1).

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Loosen screws (2).
Slightly lower the transmission cross member (1) with the transmission.

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Loosen screw (1).
Unlock plug connection (2) and disconnect.
Unlock plug connection (3) and disconnect.

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Feed out and remove the vehicle wiring harness of the engine transmission module (1).

Courtesy of BMW OF NORTH AMERICA, INC.