Question about 2000 Lexus LX470

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My lx470 has the suspension off light blinking and will not go into n or high and just stays in low with off light blinking. Had it check from lexus and they said the pump was ok and the fluids were fine. All my shocks are working fine. They did a rebut but still comes on shortly after they rebut it. They tell me it might be a sensor that has a bad line.

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A few things could be wrong here. There is a fluid self leveling suspension setup in the LX470. There is a fluid pump under the hood on the passenger side top corner mounted to the firewall, It pumps fluid into the shocks and raises and lowers the vehicle when you push the ride height adjustment button. If the pump is out the vehicle will not raise or lower and the off light will flash.

Also it could be that the shocks are leaking and have let all of the fluid out of the system which if left for a period of time unchecked will lead to pump failure. There is a fluid resevoir under the hood on top of the pump it is labled and should be filled between low and high mark with lexus suspension fluid. It could also be that your ride height sensons are out of adjustment or broken. There are two height sensors behind the front tires near the top they can be adjusted with a 10mm wrench and there is one sensor mounted to the drivers side rear four link on top by the rear end. I would not recomend trying to adjust them yourself because they need to be set exactly to match each other or the computer will think somthing is wrong with the vehicles suspension and not function.

Keep in mind that t
he "Electronically Modulated Air Suspension" system is likely discussed in the "Starting and Driving" section of your owners manual.

The High position of the Height button raises the car body slightly on its suspension "For driving on rough roads which are unsurfaced or continually bumpy."

Also from the owners manual: "If the "HI" indicator light blinks, there is a malfunction in the system. Have the system checked by your Lexus dealer at the first opportunity."

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Posted on Sep 14, 2010

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