Question about 1990 Lexus LS 400
You have a control unit, a height control sensor, the struts, which have o rings that could be leaking down, valves and dampers, an airbag cylinder and an actuator. It is possible that fault diagnostics would help, but from what I know about this, sometimes even the Lexus dealerships are at odds with the causes of the suspension failure, oh they fix it, but usually by over kill, replacing sensors actuators and shocks to make sure they cover all the bases. Most who experience this problem on a Lexus with any age on it use a conversion kit and change out the shocks and eliminate the automatic air ride system. These kits start at about $250 and go up to around $800, and still cheaper than the repair at the dealership. If you have a bad sensor or actuator, you'll get out cheap if you do the repair yourself or at a reliable mechanic. If you go to the dealer...hold onto your wallet. I have attached a pic that shows the components and their location. Good Luck. I hope this is very helpful!
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Posted on Nov 16, 2009
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Posted on Jan 02, 2017
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