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Warning lights


Hachijoe

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Anyone know whats wrong? 1992 ls400 brand new battery and alternator. The brake light low battery light and low coolant and low oil light is on. They all turn on at once, they turn on and stay on after driving the car for a few minutes. The lights sometimes turn off while im driving but turn back on. The windshield wipers headlights etc dim and move slow when the lights turn off everything works fine. Another thing i noticed is if the cars in park and idles for awhile the lights dont come on ever. I also put a digital multi meter on the battery with the car on and read 13.7 volts. Anyone know what's wrong? Its got a rebuilt ecu if that helps with anything

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