Depending on the situation, the vehicle is in one
of the three states:
Idle state.
Standby state.
Drive-ready state.
Idle state
Principle
When the vehicle is in idle state, it is switched
off.
Ge
Principle
Turning on drive-ready state corresponds to
starting the engine.
General information
Some functions, such as DSC Dynamic Stability
Control, can only be used with drive-ready state
switched o
Load control of the N54 engine is effected by means of the throttle valve and
the waste gate valves.
The throttle valve is the primary component in this process. The wastegate
valves are actuated to bring about a
fine tuning of the boost pressure. At full load the throttle valve is completely
op
REMOVING AND INSTALLING/REPLACING ALL VALVES (N62) (CYLINDER HEAD
REMOVED)
Preliminary tasks are described in DISASSEMBLING AND ASSEMBLING CYLINDER
HEAD.
Remove valve springs.
Remove valve stem seals.
Remove valves from cylinder head.
Installation:
If necessary, check valve guide for wear.
If ne