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Battery light


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I’m wondering if anyone can help or has had any similar issues: my battery light comes on momentarily and either goes off after a couple of minutes OR when I turn the engine off and on again.

I’ve taken it to a mechanic and he said it’s nothing they can see. The alternator went about 2 years ago and it seems to have started after that, but have had no other issues.

Everything works on the car while the light is on, it doesn’t cut anything out and turning different things off doesn’t make the light go off.

Thanks for any advice! 

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It sounds like you have a fault with the smart charging circuit. After the alternator was replaced has the battery been replaced ?

Do a reset on the BMS also check the the battery negative lead to the chassis has a good clean contact (no rust or paint).

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I could live with the light if all else carried on working properly but I would be doing some voltmeter tests to see if the voltage output of alternator  dips when red light is on

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