Question about 2005 Lexus LS400

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Loud noise when turning wheel red fluid leakage behind driver side tire no loss of power steering and persistantly louder when first driven and then noise almost goes away once 92 lexus ls 400 145000 miles is warmed up thanks marco78@comcast.com

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  • marco78438 Sep 22, 2008

    will the power steering fluid leak have anything to do with traction control Also, should the traction control be left on or off while in normal operations

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They are usally noisey when there leaking power steering fluid... but its usally the oil cooler pipes behind the front bumper and real handy to replace... the pipes usally just crooed.

Posted on Oct 19, 2008

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That red fluid is power steering fluid. You may not have lost enough yet to register but you will. You need to determine whether it's leaking from a cracked hose (which I've seen on Toyota products), or from the steering rack itself, and from there the course of repair can be determined.

Posted on Sep 22, 2008

  • Jeremy Dellow
    Jeremy Dellow Sep 22, 2008

    It shouldn't have anything to do with the traction control - that's a computer-controlled function that mainly involves the ABS system - the computer watches relative wheel speeds and if it sees too large a discrepancy between left and right wheels, it'll use the brakes on the faster-spinning wheel to slow it down and control the power at the wheels. It's not a bad idea to leave traction control on - if you were to accelerate through a corner and one wheel hit loose gravel, the TC system will keep the car pointed in the right direction. That's why the manufacturer designs it so that you have to manually turn off the system, and it restarts itself automatically the next time you start the car. I'd leave it on.

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That could be the rack and pinion leaking. as far as the noise goes, it is more than likely the same thing. have your local mechanic check it out because if its the power steering pump its cheaper to fix that than it will be to have the rack replaced.

Posted on Sep 22, 2008

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