Question about 1999 Dodge Caravan

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Battery warning light comes on when idling with heater running...

When I'm driving my van with the heater on all is good, stopped and idling with heat on is a different story after 2 minutes, and I don't dare turn the defrost or the cabin circulation controls on or the barrery light comes on almost instantly and is hard to get rid of. I have replaced the battery and found the battery was not the problem. I have had opinions from others, saying it might be the voltage regulator, or possibly the CPU... Well that's two totally different components as well as a bit of an expense if not needed in the first place to fix the problem. So I would greatly appreciate some feed back to help me nail this problem the first time and for good.
Thanks,
RAC

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Normally when the battery light comes on the alternator is the fault. You can go to Autozone or a similar store and they can test this on the vehicle.

Posted on Feb 18, 2009

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