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Home >> BMW >> 2017 >> 530i >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> Engine Electrical System - Repair (G30) (5 Of 5) >> 12 51 Engine Wiring Harness >> 12 51 301 Remove and install/replace engine wiring harness section, ignition module cylinder 5-8 (M550i xDrive 2020-2022) >> 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 surfaces. 
Risk of burning! 
  • Perform all work only on components that have cooled down.
WARNING: Hot fluids. 
Risk of scalding! 
  • Conduct all work in the vehicle wearing appropriate personal protective equipment only.
CAUTION: Materials harmful to health. 
Contact with fluids harmful to health! 
  • Note and follow safety instructions on containers.
  • Conduct all work in appropriate personal protective equipment only.
NOTE: TECHNICAL INFORMATION 
Immobilization period-long fill of coolant! 
Do not reuse used coolant.
When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be emptied and refilled.
In the case of other removal work involving the draining of part quantities of coolant, the coolant level must be topped up with new coolant.
NOTE: TECHNICAL INFORMATION 
Notes on work at the cooling system form the basis of these repair instructions and must be complied with at all times.
For additional information see: INSTRUCTIONS FOR REPAIR WORK ON COOLING SYSTEM .
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 

Prerequisite 

Ignition is switched off.

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.).
G14261820Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.
G14261821Courtesy of BMW OF NORTH AMERICA, INC.
G14262058Courtesy of BMW OF NORTH AMERICA, INC.