control arm BMW X5 2001 E53 Workshop Manual

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Rear Suspension Alignment
As with other BMW multi-link suspensions, the X5 rear suspension is adjustable for Camber
and Toe-in. Due to the limited space, special tools have been produced for aligning the rear
suspension.
The Camber is adjusted through the eccentric bushings at the upper control link arm.
The toe-in is adjusted at the lower control arm mount.
Camber Eccentric
Toe-In Eccentric
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Air Springs
The air spring is made from a flexible rubber material. It
forms an air tight cavity which provides the calculated spring
rate required for the sport wagon.
As the spring compresses downward the bottom edge of
the rubber material rolls along the vertical surface of the
base mount cylinder.
Air is added or removed from the air spring through its top
port. The top port of each spring is connected to a reser-
voir and the air supply pipes. The reservoirs are required to
hold additional air due to the compact design of the springs.
Rear Axle Level Sensors
Hall effect sensors are mounted on the left
and right sides of the rear suspension for ride
height detection. They are pivoted by a cou-
pling rod through the rear axle swing arms.
The hall sensors produce a varying voltage
input to the control module as the suspension
height changes.
If the vehicle is equipped with Xenon head-
lights the right side sensor contains an addi-
tional sensor for the automatic headlight level
adjustment system.
Warning Display
If the system is faulted and off-line or set in the transport mode, the following is displayed:
High Cluster: A message is posted in the high cluster matrix display.
E39 Features 07
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