In Summary

Hello Paul, my BMW X5 2002 model collapses at the back when I park it for a little while. On the message centre, I keep getting an air suspension defective warning. Could it be an electrical fault? Why does the car rise to normal height when I start it? Kagimu

Hello Paul, my BMW X5 2002 model collapses at the back when I park it for a little while. On the message centre, I keep getting an air suspension defective warning. Could it be an electrical fault? Why does the car rise to normal height when I start it? Kagimu

Hello Kagimu, your BMW X5 model E53 must have a faulty component in the rear air suspension system. Its air suspension system relies on a trunk fitted air compressor to inflate two rubber air bellows or springs attached to the dampers at each of the two wheels on the rear axle.

To regulate inflation of the rear airbags, the air suspension system relies on height sensors, pressure sensors and a control module.

To confirm the cause of collapsing rear air suspension, it is necessary to carry out a diagnosis of the pneumatic system to confirm working condition of compressor and air lines.

Inspect the mechanical components of the air suspension system to rule out leaking rubber air springs, a common failure. Test the electrical system to make sure the sensors and control module work well.

Start with a computer diagnosis which should point to the faulty component with precision. A physical inspection will confirm the root cause.