Join Date: Apr 2009
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What all conditions will trigger the battery light?
I had a bad alternator and the light never came on (would be in the 11.8-12.1v even on freeway, sometimes getting to 12.8-13.1 randomly). I just put a new one on, and the light is now coming on randomly, even though my CTS shows great stable voltage 13.8-14.1v at the time. Sometimes it comes on and stays solid for several seconds, other times it's quick random flashes, sometimes kind of flickers randomly. I see no other issues of ill effects. Everything electric seems great, no light pulsing/dimming with rpm, batteries maintain better charge and engine cranks quicker when starting, etc.
So I'm wondering, what all conditions can cause the battery light to come on?
I had both batteries tested separately at the time of getting new alternator, and they were good.