Question about 1990 Lexus LS 400

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How to fix the coolant warning on a 1990 lexus400

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If u have repaired coolant problem and light well not reset. Problem is not fixxed then. Look for something minor like cap on not holding correct pressure overflow tank has a sensor inside that may be bad.

Posted on Nov 26, 2014

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Posted on Jan 02, 2017

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Engine cuts off while drving. May be related, the warning beeper randomly beeps especially when on a rough road or going around curves to the right, not left ??


Check the coolant level in the radiator at the cap as it may be the low coolant warning system that is activated as the water runs away from it as you change direction. If it is serious enough the engine light will come on and the CPU will send the engine into limp home mode.

Oct 26, 2013 | 1990 Honda CRX

1 Answer

I HAVE A WARNING LIGHT ICON ON AT THE BOTTOM LEFT OF MY DASHBOARD IT LOOKS LIKE A CROWN OR A CIRCLE WITH SPACES IN BETWEEN. THE COLOR OF THE ICON IS ORANGE. ITS A LEXUS 1990 LS 400


I believe what this symbol is the radiator. It comes on when the coolant level is low. Take a look at your radiator coolant level and if low add some to the full mark. Do this when the engine is cold to avoid getting burned from hot water and steam.

Jun 07, 2011 | 1990 Lexus LS 400

1 Answer

Warning light on my 1990 Chevy Suburban ''Brake'' flashes 1 long and then 12 short flashes (constantly) What does it mean and how do I fix it?


The control unit for the ABS is bad. The only fix is to replace it. Google it and I'll bet you can find rebuilt units cheap.

Dec 30, 2009 | 1990 Chevrolet Suburban

1 Answer

The low coolant warning light stays on after


if the coolant levei is ok
then replace the low coolant sensor on the side of the rad

Nov 29, 2009 | 2000 Pontiac Grand Prix

1 Answer

Coolant leak


i think you got a head gasket leak,,,if its buring coolant the only thing that will burn it is a leaking head gasket,,its probably leaking into the cylinder and burning it and leaking externally where you see coolant on the tranny,,,replace the head gasket,,,

Oct 14, 2009 | 1990 Chevrolet Cavalier

2 Answers

Coolant level sensor bad warning comes on console


I have the same problem with my 97 Jeep. I found a fix on www.jeepforum.com posted by phild328, goodluck

Apr 04, 2009 | 1997 Jeep Grand Cherokee

1 Answer

Ls400 indicator lights coming on


you need a new alternator

Nov 03, 2008 | 1991 Lexus LS 400

1 Answer

All dash warning lights came on while driving. oil light, brake light, coolant light, battery light. car continued to run. once home turned off and now wont start. warning lights still come on and car...


Hatterasnc,

You're alternator has gone bad and the vehicle was running on battery power. The "clicking" sound is your now dead battery that does not have enough power to turn over the starter. You might also want to check your power steering pump for leak. This is a know problem with early LS400s and will most likey be the cause of the alternator failure. I just dropped $1050.00 to fix the very same promblems you have.

Jul 21, 2008 | 1990 Lexus LS 400

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