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Home >> BMW >> 2021 >> X4 M40i >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Engine Electrical System -- Repair (G02) >> 12 51 Engine Wiring Harness >> 12 51 245 Remove and install/replace transmission module engine wiring, (X4 M40i 2019-2021) >> Install the wiring harness section of the transmission wiring harness

Install the wiring harness section of the transmission wiring harness

Wiring harness section of transmission wiring harness 

G15980542Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Improper routing of cables and wiring harnesses. 
Trapped, crushed or damaged cables may cause short circuits and malfunctions. 
  • Route all cables without abrasions, do not trap and crush.
G14205931Courtesy of BMW OF NORTH AMERICA, INC.

Fastening the transmission 

TIGHTENING TORQUE SPECIFICATIONS

Transmission cross member to body 
M8 Tightening torque  19 Nm
G14205930Courtesy of BMW OF NORTH AMERICA, INC.
G11105250Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Terminal 50 to starter motor 
M6 Tightening torque  7 Nm
G12729295Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Wiring harness section for transmission to cylinder head 
M6x16 Tightening torque  8 Nm
G14298136Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work