Mechanics

CAN LOOSE OR CORRODED BATTERY GROUND CABLES CAUSE A SLOW DRAIN ON A BATTERY?

2007 Hyundai Azera • 51,000 miles

I have a '07 Hyundai Azera with a 3.8 L engine. I just recently replaced the battery. The car has started fine over the past month since installing the battery. However, I recently let the car set for approx. Four days while out of town and when I started it up after returning from my trip it was extremely sluggish. I turned it off and restarted it and got the same thing. After driving the car for approx. 45 mins, I turned the engine off and back on a few times and it started very quickly with no hesitation. Every start since then has also been fine, including some after the car has set outside in the cold weather for several hours. Since it is still under warranty, I took it to the dealership and they ran diagnostics on the electrical / charging systems and the only thing that they came back with was that the ground cables were corroded. I'm thinking that this is not the problem. Your thoughts?
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Smbean
January 19, 2012.




Could have a short circuit in the electrical system draining the battery overnite-
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Tiny
Rasmataz
Jan 19, 2012.
It's okay over night. It took 4 days for it to drain to a point where it was noticeable when trying to start the engine. I'm assuming that if it sat much longer, it would not have started at all. Will electrical / charging system diagnostic equipment at dealership allow mechanic to find this type of short relatively easily?

Tiny
Smbean
Jan 19, 2012.
They should be able to pinpoint the problem

Tiny
Rasmataz
Jan 19, 2012.

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