Necessary preliminary tasks:
Remove front left underbody panelling.
Disconnect plug connection (1).
Gently press retaining tabs apart in direction of arrow and remove receiving
antenna (2).
Fig.
Special tools required:
00 2 190
NOTE: If a tire sealant has been used, replace the wheel electronics.
When a tire has been removed, do not clean the rim with installed wheel
electronics with high
Cooling System
The cooling system of the N54 engine consists of a radiator circuit and an
isolated oil cooling circuit. The fact
that there is an isolated oil-cooling circuit ensures that heat is not
introduced via the engine oil into the engine's
coolant system.
Fig. 71: Identifying Cooling S
(cylinder bank 5 to 8)
NOTE: To remove the exhaust manifolds, the engine must be secured in
the
installation position with the special tool and then the front axle bracket
lowered.
Remove left exhaust manifold.
After removing exhaust manifolds:
Reinstall front axle bracket provisionally and remove