BMW X6M With Major Air Suspension Problems
This client’s BMW X6M had major air suspension problems. He was extremely frustrated as he had already taken his car to several workshops who all failed to locate and fix the problem.
Eventually he contacted GP Motor Works!
Ride Height Not Registering in ICM
We detected the Ride Height was not being registered in the ICM (Integrated Chassis Management control system). We conducted a physical inspection and discovered the relay to the EHC (Electronic Height Control) was burnt out. This relay was replaced.
We then detected there was no signal from the EHC going to the air compressor and the control valves. This fault was traced to a malfunctioning EHC which was replaced with a second hand unit (client authorised). The new EHC was coded to the vehicle.
Air Bellows Faulty
We then attempted to calibrate the Ride Height but the vehicle would not rise up. A further fault was picked up and traced to tiny holes in the rear air bellows. New air bellows were supplied and installed.
The air compressor was then found to be pumping insufficient air. The client supplied a new generic air compressor which was installed. We managed to calibrate the required Ride Height into the ICM (self-levelling suspension control).
During a test drive we discovered the Ride Height was jacked to the maximum on the right hand side and below normal on the left hand side. The pipes to the control valves are colour coded differently to the BMW parts and work the opposite way round.
Once these pipes were changed over the Ride Height functioned perfectly!!!
This was an excellent example of in-depth diagnostic testing to locate and fix problems which then lead to uncovering further faults.
We’ll help you save money in the long run!