Suspension - Rattles/Knocks From Rear Suspension

SI B 37 02 09
Special Suspension Systems

May 2009
Technical Service

SUBJECT
Rattle from Rear Axle

MODEL
X6 xDrive50i ( E71) produced from 7/08 to 8/08 with option ZSP (Sport Package)

SITUATION
The customer may complain of a rattle or knocking noise from the rear of the vehicle when driving over rough or uneven road surfaces

CAUSE
Compression of the bushing supports at the upper shock absorber mount

PROCEDURE





Check and correct tire pressures as necessary. If the noise is present with the tires properly inflated, isolate the source of the noise using a ChassisEAR or other listening device. If the source of the noise
is the upper shock mount, then the upper and lower bushing sections for both rear shock absorbers must be replaced. Refer to Repair Instruction RA 33 52 000, "Removing and installing/replacing rear left or right shock absorber".





PARTS INFORMATION

The replacement of the sealing grommet is only necessary when the grommet is damaged during removal of the shock absorber.





WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.





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