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I have a Toyota Aristo
First of all you need to access the Suspension Electronic Control Unit (ECU) using suitable diagnostic equipment connected to the data link connector of the car, in order to pull out all DTC's memored. DTC = Diagnostic Trouble Code.
Then you will bu full informed about the root cause of the problem, and you will be able to repair & replace bad pieces and reset the Suspension ECU. Then the suspension height light will turn OFF, and you will have correctly height adjustment.
I suspect bad front or rear chassis height level sensor or bad supplly wires, but without scanning the Suspension ECU is hard to say. Anyway you can take a look under chassis at the front and rear chassis height level sensors & supplly wires, and clean all connections contact pins using suitable electrical contacts cleaner spray.
Let me know about found DTC's. I will kindly assist you to fix the problem. Good Luck!
Lexus GS 400...
on Sep 27, 2011
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