BMW 7 Series: Ignition Wires, Spark Plugs
REPLACING ALL SPARK PLUGS (N54, N63, N74)
Necessary preliminary tasks
- Switch off ignition.
- Remove IGNITION COILS.
IMPORTANT: Wear safety goggles.
Oil and dirt particles may get into your eyes!
Clean spark plug slot with compressed air.
Unscrew spark plugs with special tool 12 1 220 and extension with min. 8º bend.
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Fig. 14: Unscrewing Spark Plugs With Special Tool (12 1 220)
Attach new spark plug (1) to special tool 12 1 230.
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Fig. 15: Attaching Spark Plug To Special Tool (12 1 230)
Screw spark plug with special tool 12 1 230 hand-tight into cylinder head plug thread as far as it will go.
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Fig. 16: Screwing Spark Plug With Special Tool (12 1 230)
Installation note: Tighten spark plugs with torque wrench, special tool 12 1 220 and extension with min. 8º bend.
Observe tightening torque.
Tightening torque 12 12 2AZ.
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Fig. 17: Tightening Spark Plugs With Torque Wrench, Special Tool (12 1 220)
READ NEXT:
Ignition Coil
NOTES ON CHECKING IGNITION SYSTEM
Troubleshooting
Fault in fuel injection system
Spark plug faults
Ignition coil faults
Further fault patterns with evaluation
Additional fault notes for troubles
Coding Control Module (DME/DDE)
Switch off ignition.
Connect MoDiC or DIS/GT1 Tester.
Switch on ignition.
Select "Coding" program.
For subsequent procedure, follow instructions in MoDiC or DIS/GT1 Tester.
Carry out adjustment of
SEE MORE:
Procedure After Airbag Triggering As Result Of An Accident
Check and/or replace following components after airbag triggering:
Satellites (control unit + sensor)
Components
Satellite, A-/B-pillar, left/right
Satellite, front door
Satellite, rear seat
Satellite, driver's/front passenger seat
Satellite, vehicle center
Procedure
Inspect visua
System Components
The voice input and activation system is implemented in the following control
units:
Telematics Control Unit (TCU)
Voice input and activation system
CIC
The voice-input commands are transmitted via MOST or the central gateway
module (ZGM) to the receiving
control unit.
Voice output cons
