The secret to diagnosing air ride problems is knowing what criteria the system uses to regulate the compressor/reservoir and having the right tool.
The key to understanding the embedded logic of air ride systems is using service information.
A conversion kit might cost less and provide better long-term results for the customer.
Air ride diagnostics can be just as complex as any ABS or fuel injection problem. The diagnostic process should start with questions about the system rather than the parts. Failing to find the root cause of a warning light DTC or intermittent problem will typically cause the problem to come back as soon as the
It could be in a Land Rover, Mercedes or BMW, but chances are if you are a European specialist in the colder regions of the country, you will soon get a customer in complaining about a warning light or message saying there is a problem with their air ride suspension. It is a common occurrence
The Volkswagen Touareg was the first VW SUV and the first to get an air-ride suspension system. The luxury SUV shares the same platform as the Audi Q7 and Porsche Cayenne. This is a full-feature air ride system designed to improve comfort, stability, and off-road capabilities. Some vehicles with the 4XMotion option will also have
For the BMW 7 Series E65/E66 manufactured between 2001-’08, engineers went with an innovative rear air ride system.
A visual inspection of the shocks and struts can tell you a lot about the ride control units.
Land Rover uses the air ride system to increase ride height and improve suspension articulation over obstacles during off-the-road driving.
Inside any active, hydraulic or air ride shock or strut, there is a piston that travels up and down a tube. Wear can occur between the piston and tube, and, over a period of time, oil will pass between the piston and tube. If the suspension bottoms out, contact between the piston and the bottom of the tube could occur, damaging the piston and the valving.
The air ride suspension on Land Rover Range Rover and Discovery models is what helps set these vehicles apart from a normal SUV. The system lifts the suspension up over obstacles, and lowers the suspension to make it easier for the occupants to get in and out. But with functionality, comes complexity.
Lexus models, including the LS sedan, RX crossover and GX SUV, are some of the least problematic air ride vehicles on the road. In fact, most Lexus customers do not realize that their vehicle is equipped with an air suspension until something breaks. Like all air ride systems, if you are not familiar with the system operation, you can throw a lot of parts at it without achieving any results. Taking some time to look at the theory and operation sections of the service information can save you a lot of lost time speculating on the source of the problem.