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I have a 2003 Mazda Tribute with the V6. The battery light will occasionally come on, sometimes it just flashes, other it stays on. I had the battery and alternator checked at two different auto parts stores and they both tested fine. I checked it with a voltmeter and even did the old take off the positive terminal to check the alternator trick and in theory, they're both fine. Yesterday I was in a long drive through window line with my stereo on and the AC on, and the stereo shut off and the car started to lose power as if the battery was dying. My question is, what could cause this? Thanks for any answers I get.

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  • I would have your battery, alternator, and cables checked at some other place than an "auto parts store"
    – SteveRacer
    Jun 18, 2019 at 2:43

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Get the charging and battery checked by a shop during an actual test drive instead of a static test. You're losing charging while driving so it has to be tested that way.

Also, doing the battery cable removal trick is a great way to destroy all the electronics in your car. That "trick" because obsolete back in the early '80's. See this post on why your trick is so dangerouse

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