My rear air ride shocks are stuck in the fully expanded mode and the car sits like a dragster and rides like its doing wheel hops on the street.it is vertually not driveable.is the module the usual suspect?
air ride suspension probs on 2005 Lexus LS430
The system has height sensors that may be damaged or out of adjustment. Its not a very complex system but does need someone with proper information to check it out. There is a company that independent auto repair shops buy their information from that the same information inexpensively to do it yourselfers. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online or if a local repair shop is diagnosing what is wrong and get stuck There is a professional service called Identafix. http://www.identifix.com/info/about_us.htm They only deal with professional repair shops. They are in the Minnesota 651-633-8007. Your auto repair shop do all their diagnosis tests, and discuss your problem with a team of professional technicians great service cheap and very bright people. If the repair shop that are repairing your car are stumped this is a great service. This company only deal with automotive repair shops and don't answer questions for the general public but are an amazing knowledge base.
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I agree with Patrick. I'd start the diagnostic by checking the height sensors. It won't be easy without a diagnostic computer though. If the vent valve fails the SUV won't lower either.