The heat/ac is affecting my lights/engine..why?
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From: College Park, MD
The heat/ac is affecting my lights/engine..why?
I just started my car today and was adjusting the heat/ac. It was on defrost/feet. As my car was on and in park, I switched it to only windshield defrost. The setting was only on 1. I noticed when i switched to only windshield defrost, my rmps jumped about .3-.5 and my lights dimmed quickly. Is this normal? And any idea why it happens? MAybe because of just extra battery usage?
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Originally Posted by tallica62
when i switched to only windshield defrost, my rmps jumped about .3-.5 and my lights dimmed quickly. Is this normal? And any idea why it happens?
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