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Home >> BMW >> 2021 >> M760i xDrive >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Engine Electrical System - Engine Wiring - Repair (G12) >> 12 51 Engine Wiring Harness >> 12 51 245 Remove and install/replace transmission module engine wiring (740e xDrive PHEV 2017-2019) >> Removing the wiring harness section of the transmission wiring harness

Removing the wiring harness section of the transmission wiring harness

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

Preliminary work 

Removing the wiring harness section of the right transmission wiring harness 

Wiring harness section of the transmission wiring harness, right 

G15115698Courtesy of BMW OF NORTH AMERICA, INC.
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.
G15115699Courtesy of BMW OF NORTH AMERICA, INC.

Removing the wiring harness section of the left transmission wiring harness 

Wiring harness section of the transmission wiring harness, left 

G15115700Courtesy of BMW OF NORTH AMERICA, INC.
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.
G15115701Courtesy of BMW OF NORTH AMERICA, INC.
G15115705Courtesy of BMW OF NORTH AMERICA, INC.