General Information
Working on ignition system
Removing and installing electronic control units
Welding work (overload protection of control units)
Disconnecting and connecting battery
Disconnec
IMPORTANT:
Disconnecting the vehicle battery will cancel the fault memories
of control
units. Consequently, before disconnecting the car's battery, always
interrogate the fault memories. Invest
Head Gasket
The head gasket design on the N54 is unique to that engine.
It features a multi-layer steel design. There is no silicone rubber perimeter
"shelf" as on the N52. This is not
needed due to the aluminum block on the N54.
The N52KP and N51 engines are still using the head gasket that is f
Necessary preliminary tasks:
Remove front seat.
Remove lower strap (belt tensioner).
Remove drive unit for longitudinal seat adjustment.
WARNING: Read and comply with safety regulations for handling airbag
modules and
pyrotechnical belt tensioners.
Improper handling can lead to triggering of