I replaced a new battery for my 2002 BMW 325i last week. After my weekend, it...

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kannanmanickam

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...once again drained.? I recently replaced my 2002 BMW 325i battery as it drained down over a weekend. After i replaced a new battery, once again it drained down during this weekend. I took the car to the BMW service center and they replaced the BLOWER final stage unit for 300$ and also insisted to replace the car stereo as there is some short circuit in the stereo. For now, i don't want to spend1000$ to replace the stereo, so, I asked them to un fuze the stereo. My stereo was working fine till now. How do I find whether the stereo is really the cause?
 
It could also be your alternator. If this is bad, it will drain your battery.
 
It could also be your alternator. If this is bad, it will drain your battery.
 
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