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01-02-2009, 04:07 PM | #1 |
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BMW 7 Battery Life
Happy New Year you guys! Anyways, I have a quick question, you see, I travel overseas a lot, therefore I have to leave my 04 745I in the garage for days, and whenever I come back, my car battery is dead. The most my car battery lasts for is one full week, 7 days – is this normal?
I did went to BMW, told them what’s happening, they replaced the battery and told me to turn off the battery switch thingy located at the back, in the truck, so I did, but still, I’m facing the same problem today, the battery runs out after 7 to 9 days. I know this car has a lot of computer gadgets in it, maybe there is some non-functioning in the electric system, I think it’s sucking to much voltage, no? But before I confront BMW, I want to be sure. So, how long does your car battery usually lasts for? I mean, I have SL 500 as well, I leave that car in the garage for winter, and start it up every 3 weeks or so, it has no problems starting at all. What’s wrong with my bimmer? |
01-02-2009, 05:19 PM | #3 |
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next time you leave, disconnect the whole battery
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01-02-2009, 06:44 PM | #5 | |
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01-02-2009, 08:52 PM | #6 |
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01-02-2009, 09:00 PM | #7 |
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Exactly! I thought once I turned off the battery switch located at the side of the truck, it would stop all these fancy lights from going on, but it doesn’t. The seat position light and where you insert the key, the lights away stay on. I even have heard the cd changer switch or read the disks when car is shut off, it’s like the whole car is still alive even when you’re away – how do I turn everything off? It’s really stupid, there has to be a way.
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01-02-2009, 09:07 PM | #8 |
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I know that you can't leave the car off for too long, so I always start the engine of my SL every two to three weeks, it never runs out, and it has smaller battery, unlike the 745I. One week is way too low, it’s not acceptable, I mean I had many cars before and I never faced such a problem before. I know I am damaging my 745I by leaving it every week or so, so I can’t stand this anymore, unacceptable.
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01-03-2009, 01:18 AM | #9 | |
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BMW batteries are kaput!
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After this xperience,I for one will never buy an electric/hybrid bmw! |
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