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Thread: Weird electrical problem, what is it?

  1. #1
    Join Date
    Feb 2017
    Provo, Utah
    My Cars
    2006 BMW 325i

    Weird electrical problem, what is it?

    My car's electricity has been randomly shutting off, and then turns back on when I slam the trunk. It's a 2006 BMW 325i, 98,000 miles. It's probably happened 25 times at random, and every single time, the electricity turns back on after I open and slam the trunk.

    It never happens when the engine is on. It usually happens when I turn the car off and pull the key fob out, or when I go to unlock the car. The car will just appear to be dead and unresponsive to the key fob or unable to turn on. I manually open the trunk, slam it, and the electricity will immediately turn back on (sometimes locking or unlocking, like a delayed response to the key fob's prior command).

    Has anyone heard of this before? Spoiler alert: I know nothing about cars.

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
    Join Date
    Nov 2010
    Baumholder, Germany
    My Cars
    05 325it 05 M3 95 318is
    Welcome to the Forum!

    Your battery is in the trunk and I bet a shiny nickel that the positive bus bar is loose. On the right side of the trunk is a cover, at the top is a black release, just tug on it, and the panel will come out. Under that you will see the battery, make sure all the connection on the red square is tight.
    16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
    05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
    05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
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