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Can anyone answer if the increased battery drain and clock reset is a definite sign that the battery needs to be replaced? My car is doing the exact same thing right now. I am not sure if I need a new battery or just to get a trickle charger for it. I am supposed to take my car in this weekend so I would like to get some advice on here first before BMW goes ahead and says I need a replacement for 300$. My car is an 08 e92 with 40,000 miles.
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