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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 51 301 Remove and install/replace engine wiring harness section, ignition module cylinder 5-8 (M5 2021-2022) >> Remove wiring harness section for the ignition system of cylinder bank 2

Remove wiring harness section for the ignition system of cylinder bank 2

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.

Preliminary work 

Wiring harness section for the ignition system of cylinder bank 2 

G14262065Courtesy of BMW OF NORTH AMERICA, INC.

Removing ignition coil of cylinder bank 2 

NOTE: RISK OF DAMAGE 
Damage to the ignition coil  .
The silicone hose of the ignition coil must not be contaminated by fuel as this can lead to failure of the ignition coil  .
  • When working on the fuel system, cover the ignition coils with suitable materials and remove where required.
  • Do not oil or grease the silicone tube of the spark plug socket. Do not use any protection or maintenance products (e.g. silicone spray, rubber care products, rust remover, etc.).
NOTE: The description is provided only at one component. The procedure is the same for all other components.
NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.

Slowly pull the ignition coils (2) up and take them out without jerking them.

Pulling out the ignition coil with jerks may cause silicone hose to tear.

G14262069Courtesy of BMW OF NORTH AMERICA, INC.
G14262058Courtesy of BMW OF NORTH AMERICA, INC.