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2000 Mercury Cougar Question: my battery light flashes while im driving and it messes with my lights



brandie87, 2.5L V6, Soddy Daisy, TN, May 03, 2012, 14:44

it only happens when i drive and it messes with my lights and when i have the air on or heat it messes with it also

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  • Answer #1

    May 03, 2012, 15:20

    on most vehicles, when the "Battery Light" Flashes or comes on, that generally means the Alternator is not producing enough voltage, meaning it may need to be replaced. If you have a digital volt meter, you can check the voltage at the battery while the car is running. It should be producing at least 12.8 volts.

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