* Air compressor: The compressor itself can fail or develop leaks in its seals.
* Air lines/hoses: The rubber air lines that run throughout the car are prone to cracking and perishing with age, leading to significant air loss.
* Air suspension bags (struts): The air bags themselves can develop punctures or tears, resulting in a loss of air pressure and a lowered suspension.
* Air spring valve block: This is a more complex component and internal leaks or failure can lead to suspension issues.
While other components like the air compressor relay or the height control sensors can malfunction, leaks in the system are by far the most common cause of air ride problems in these vehicles. The age of the car means the rubber components are particularly vulnerable.
