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2000 BMW 323i

Question: Battery dies after one day, and AC comes on every time the ignition is turned on

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Visitor, Alpine, WY, June 22, 2010, 02:18

I have changed the battery twice and after about a week it dies, something is draining the battery, and the AC comes on as soon as i turn on the ignition i have to switch it off.

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  • Answer #1

    Chow June 23, 2010, 01:17
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     Master

    How are the battery terminal contacts? good?

    Have you checked your charge rate? M54 are notorious for failing alternators.
    If the charge rate is OK and the batteries you have installed are indeed new and fully charged, you have a current draw issue.

    Make sure you don't have any aftermarket phone kits or entertainment equipment fitted as this might be the cause, if so return to the location of fitment and explain your issue.

    Some faulty control units can also draw excessive current, as they fail to "sleep" or switch off, best place to go is your local mechanic or even better your local BMW dealership, so a current draw test can be carried out. Your local mechanic can be found in the "find a shop" tab above.

    Goodluck

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  • Answer #2

    Visitor, July 27, 2010, 18:37

    Sounds like you need an alternator

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