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Home >> BMW >> 2021 >> M5 Base >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Electrical System -- Repair M5 (F90) >> 12 51 Engine Wiring Harness >> 12 51 245 Remove and install/replace transmission module engine wiring (M5 2018-2022) >> Remove the transmission wiring harness

Remove the transmission wiring harness

WARNING: Hot fluids  .
Risk of scalding! 
  • Conduct all work in the vehicle wearing appropriate personal protective equipment only.
NOTE: TECHNICAL INFORMATION 
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
NOTE: TECHNICAL INFORMATION 
Grease the threads of new oxygen sensors thinly and evenly.
For oxygen sensors that are reused, the following should be observed:
Thinly and evenly grease the oxygen sensor on the thread only. Do not clean the part of the oxygen sensor that does not protrude into the exhaust line (sensor ceramics) and do not grease.
For additional information see: 11 00... OVERVIEW OF CONSUMABLES IN APPLICABLE BMW PARTS CATALOGUE .

Preliminary work 

G14435691Courtesy of BMW OF NORTH AMERICA, INC.
WARNING: Working on fuel system  .
Risk of fire! Danger of explosion! 
  • When working on the fuel system, make sure the workstation has sufficient ventilation, e.g., by means of extraction.
  • Tightly seal off open lines and connections; collect any leakage fuel directly at the point of exit.
  • No fire, sparks, open flames or smoking.
G15179214Courtesy of BMW OF NORTH AMERICA, INC.
CAUTION: Contact with hazardous substances  .
Health impairment  .
  • Note and comply with the Safety Instructions on the containers and the instructions on the manufacturer's safety data sheet.
  • Conduct all work in appropriate personal protective equipment only.
G15179215Courtesy of BMW OF NORTH AMERICA, INC.

Removing the front underbody protection 

Removing the front underbody protection 

G15194808Courtesy of BMW OF NORTH AMERICA, INC.

Removing the stiffening plate 

NOTE: TECHNICAL INFORMATION 
Secure component against falling.
NOTE: TECHNICAL INFORMATION 
Driving without thrust field is not permissible.
G15194813Courtesy of BMW OF NORTH AMERICA, INC.

Remove transmission cross-member  .

G15179221Courtesy of BMW OF NORTH AMERICA, INC.
G14262001Courtesy of BMW OF NORTH AMERICA, INC.