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My car battery light in on


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pahari
New User

Mar 28, 2021, 7:27 PM

Post #1 of 2 (641 views)
My car battery light in on Sign In

I have a 2010 Toyota Corolla S. Today, after driving around for 15 minutes, When I parked, my battery light came on. I took it to Autozone. After checking my battery and the changing system they said, everything seems ok. Nothing pop up in their machine. I was wondering what could cause this problem. I replace my battery in December 2019. And I replace my alternator 2 weeks ago.

N.B:

The first time I saw that the battery light came on, I turn off my engine for 5 minutes and then start again, the battery sign was off. After running the engine for 3/4 minutes, it came back on.

While I start the car for driving to AutoZone, the battery light was off. Again after 4/5 minutes, It came on while I was driving. My battery sign was still on, while the guy from AutoZone was checking both the battery & the changing system. Then I turn off and on my engine, that sign went off again.

Any comments, what might cause the problem?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 29, 2021, 1:00 AM

Post #2 of 2 (618 views)
Re: My car battery light in on Sign In

You said battery light was on when you parked it? Do you mean engine was off or during parking the car?


Would help if you got codes read I suspect engine idle is low or strained to put out a proper charge. Low idle or overloaded electrical use could do this then test out as normal.
A live view of operating voltage can be done thru a power port/cig lighter while driving watch voltage I bet it's dropping which triggers the warning light.
Does this car have aftermarket items like a sound system or anything else that uses battery power?


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