BMW X5: Engine Mechanical Overview
			
			
			READ NEXT:
	
   As far as the physical appearance and dimensions, the crankcase on the N54 is 
the same as the N52. The main
change is in the materials, the N54 uses an all aluminum alloy crankcase. There 
is also ca
   
   
 
	
   Although, the N54 engine has an all aluminum crankcase, many of the bolts are 
still aluminum as on the N52.
This is to reduce any potential confusion between steel and aluminum bolts. 
Some bolts, fo
   
   
 
	
   As stated before, the cylinder head cover used on all of the new NG6 engines 
is made from plastic. However, the design differs between the engines due to 
engine equipment.
For example, the N54 engi
   
   
 
   SEE MORE:
	
   NOTE: If the guide arm is detached from the rear axle carrier, it is 
necessary after
reinstallation to carry out a wheel/chassis alignment check.
Necessary preliminary tasks:
	Remove rear wheel.
	Deactivate and empty air spring system.
Unscrew nut (1).
Remove guide arm (2) from wheel carrier.
In
   
   
 
	
   Principle
Depending on the equipment and national-market
version, the rear-end collision preparation can
react to vehicles approaching from behind.
General information
Radar sensors monitor the area behind the vehicle.
When a vehicle approaches from the rear at a
certain speed, the system can reac