Battery light comes on when turning vehicle on

2007 JEEP GRAND CHEROKEE
117,077 MILES • 6.1L • V8 • 4WD • AUTOMATIC
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SEBASTIANTUDON
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When I start my vehicle the red battery light comes on for a few seconds then goes away. Doesn’t come on while driving only when I start the vehicle. Doesn’t seem like it’s the battery because it starts right away, is it a sign my alternator is going bad?
Jan 27, 2020 at 5:28 PM
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ASEMASTER6371
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Good evening,

Yes, it sounds like the alternator is worn and is taking a little time to build the charge rate to turn out the light.

I would check the battery voltage when you start it and see how long it takes to get to 14 volts.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Do the test as in the guide and let me know the voltage.

Roy
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Jan 27, 2020 at 6:09 PM