Question about 1995 Lexus LS 400

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Battery light came on. Took alternator out and had checked. Said it was good. But I put back in and start car, light still on and not charging. Any ideas?

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Might be the battery is not taking the charge because it might be bad... Have the battery tested under a load... Most parts stores will perform this test for you for free... Hope it helps...

Posted on Oct 13, 2013


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Posted on Jan 02, 2017

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SOURCE: my 99 RX300 lexus doesn't start sometimes. Changed

Sounds like a loose connection on the starter or ignition circuit but more information is needed. When its not starting up, are there any noises from the engine bay? Have you checked for spark on the spark plugs? Are you getting error codes from the car's computer? Does the car idle 'weird'?

See if you can get a copy of the Haynes or Peterson's manual for your car.

Remember that its a Lexus, its going to cost money to fix.

Posted on Sep 15, 2009

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SOURCE: car alternator has been replaced

Sounds like you have bad wiring or some other electric draw somewhere. You need to do a parasitic drain test, you have a hot wire somewhere, that grounds out and drains your battery, so the above test might not find it, if it is not grounding out when you do your checking.

Try this link: find-parasitic-battery-drain.html

Keep us updated.

Posted on Apr 05, 2011

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SOURCE: My 1991 Lexas LS400: All of the dash icons light up and radio goes on/off (at the same time) when applying the brake and/or while the `car has stopped. Had new battery checked, the battery is good.

I've seen this before, the problem ended up being the brake light bulb lead contacts touching each other on the dual filament bulbs allowing back feed voltage to travel through the park/dimmer switch circuit causing the lights to activate while pressing the brake pedal. I would pull all the brake light bulbs out and look at the back of each one, if you see nothing unusual, I would still replace them all only because it could be internal to the bulbs as well. Let me know if this fixes your problem.
I hope this info helps!~subyguru~

Posted on Jan 19, 2012

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