REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51)
Special tools required:
12 1 171
12 1 200
Necessary preliminary tasks:
Switch off ignition
Remove ignition coils.
Unscrew spark p
SEE MORE:
With regard to the N54 engine, the air intake ducting plays a significant role
due to the requirements of a
turbocharged engine.
In principle, the energy of the escaping exhaust gases is utilized to
"pre-compress" the inducted fresh air and
thus introduce a greater air mass into the engine. This
REPLACING MICROFILTER FOR INTERIOR VENTILATION
Necessary preliminary tasks:
Remove microfilter housing.
Unclip catches (1) and remove microfilter (2).
Installation:
Reset Condition Based Service display according to factory specification.
Fig. 69: Identifying Catches And Microfilter
REPLACING R