Question about Lexus LS 430

3 Answers

LS430 / 2005 has been running well, yet cannot start up this morning without any warning sign, only hear the click sound, all the dash board lights are on, signal lights and emergency light are working, driver side window is not functioning yet all other passenger side windows work fine, cannot adjust steering wheel position, cannot horn or turn on head light, cannot pay CD or radio; I did jump start, but still cannot start the engine, so it is not the battery problem, feels there are something wrong with the electrical system, any suggestion? Thanks in advance. Jeff

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  • Kenneth Rosenburg
    Kenneth Rosenburg Oct 08, 2010

    did the engine turn over at all when you tried to jump start it or nothing at all?

  • czfan11 Oct 08, 2010

    Thanks for your answer, I wonder why the electrical system (partial) and starter went wrong at the same time?

  • czfan11 Oct 08, 2010

    but why the electrical was so weak to turn the stater and the window, horn, etc?

  • czfan11 Oct 08, 2010

    LS430 / 2005 has been running well, yet cannot start up this morning without any warning sign, only hear the click sound, all the dash board lights are on, signal lights and emergency light are working, driver side window is not functioning yet all other passenger side windows work fine, cannot adjust steering wheel position, cannot horn or turn on head light, cannot pay CD or radio; I did jump start, but still cannot start the engine, so it is not the battery problem, feels there are something wrong with the electrical system, any suggestion? Thanks in advance. Jeff

  • czfan11 Oct 08, 2010

    Thanks, but I am still puzzled by: how does solenoid impact power window on driver side only, and the horn, the steering wheel, the radio/cd, not the power seat or dashboard lighting, etc?

  • czfan11 Oct 08, 2010

    make sense, where is fuse box located? I seem cannot find it, thx

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  • Lexus Master
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If the battery requires jumping, try to remove it to charge it and clean the terminal ends with a wire brush in order to ensure a good connection. Jumping sort of bypasses the battery that is installed a little bit, depending on the state of charge and condition of connections there on the positive and negative side.

Try to look for blown fuses. But, the fact that it ran fine until the morning without any warning sign, tells me that it may be a simple battery or connection problem.

Batteries only last 3 years on average, based on my experience at Sears Roebuck & Co. in the 1990s. Things haven't changed that much since then.

Posted on Oct 08, 2010

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First thing to do is check all of your fuses, one by one, located underneath the drivers side steering wheel. Since you are having more then one problem with the electrical components. If all of you fuses are good and your battery is fully charged with both battery cables secure and tight on the battery posts then your PCM (vehicle computer) will need to be replaced.

Posted on Oct 08, 2010

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  • Master
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Hi, the starter solenoid has packed up and you need to replace it. To find out where it is located, get someone to turn the key as if to start and you have the bonnet or hood lifted and you will hear the click coming from the solenoid.

The solenoid is essentially a switch that turns the starter on and off. When your car is just sitting off in the driveway, the solenoid is receiving a current from the battery, but it does not pass it on to the starter. When you flip the ignition, a small current signals the solenoid to let the current through to the starter. The starter then turns over. When you have a solenoid that is going bad, the switch can get tweaked and not let the current through correctly. Since the electrical current isn't enough to fire up the starter, the engine doesn't fire. In some cars, it just makes a clicking noise.

Posted on Oct 08, 2010

  • Tunde Autos
    Tunde Autos Oct 08, 2010

    O.k, you can now accept and rate the solution......

  • Tunde Autos
    Tunde Autos Oct 08, 2010

    Because you have a bad solenoid....

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