20 Most Recent 2005 Lexus GS400 Questions & Answers

Your cat is bad,probably clogged,can cause it to backup and blow a head gasket,did on my truck.The only way to see is to remove and look in the front part of it,mine looked like it has a big rock in it,

Your overheating problem is unlikely to have anything to do with a replacement starter. It's more likely that your car has since developed a radiator/cooling system/ head gasket fault

On most models the gauges get power from the same fuse the warning lights do. So it could be a problem with the printed circuit board on the instrument cluster.

change coils,tune up.

Usually a sign the coil is failing.The coil is a magnet with windings suspended in oil.

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!