Battery Issue
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hey guys
so i have a issue with my X5 for some reason i have to boost it pretty much all the time i boost it on saturday then sunday i start it up fine then monday dead.. i got a new battery installed from bmw dealer and they did a test on the alternator they said it was fine so this issue got me stumped.. now what i want to know is a friend on mine has a e39 and he said he had the same issue some one told him it was the blower regulator he fixed it and now its fine. could that be my issue as well? just wanted to see if anyone else has dealt with this same issue. thanks hope some one can help me out (oh and the blower regulator is number 2 on the pic) |
There are soooo many things in an e53 that can kill the battery. Mine was the Bluetooth module (tcu). Unplugging it is a simple test to see if that's the issue on it but again there are tons of possibilities.
But if you have the Bluetooth unit its a good a place as any to start. Search the forum for what to unplug there are post with pictures of it. |
Put a multimeter on the battery and check its load while removing fuses out of the box.
Remove 1 fuse at a time and check for voltage variation. It will lead you to the culprit |
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