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  1. #1
    Senior Member Two Rings
    Join Date
    Dec 30 2013
    AZ Member #
    137488
    Location
    Australia

    Weird Electrical Problem

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    So first I noticed that my aftermarket sunroof stopped working. Turn the engine on (instead of just being on ignition) and it started working again.

    While driving, turned my headlights on (after being in the parking light position), and everything worked but my stereo turned on and off.

    Then I noticed the battery voltage gauge moving slightly and waving up and down instead of sitting constant how it normally does.

    Then I turned the interior light on and it was working but flickering (which was coinciding with the battery voltage gauge moving up and down).

    Then when I turned the car off, the sunroof didn't close (as it normally did when I would turn the car off).

    Other than that, everything electrical seems to be working. Any ideas?

  2. #2
    Veteran Member Four Rings walky_talky20's Avatar
    Join Date
    Jun 30 2008
    AZ Member #
    30427
    Location
    Erie, Pennsylvania

    Perhaps a faulty chassis ground connection (cable from battery negative that bolts to the frame). Could also be a faulty battery. But first thing will be to check and clean all battery connections and inspect the cables. Next would be to load test the battery and charging system with the appropriate tool for that purpose. One example of such a tool is a Sun "VAT-40" or "VAT-60". Some of the auto parts stores do have this type of machine and will do the test for free, although their knowledge on how to use the machine and how exactly to interpret the results can be hit or miss. A skilled technician with such a machine should be able to isolate the problem without issue.
    ^Don't listen to this guy, he's not even a mechanic.
    2001 Laser Red A4 1.8TQM, 5-Speed Swapped, 4.11 Final Drive, APR 93, R8 coil packs, Labree HFC & DP, 2.5" Exhaust, ST Coilovers, 034 RSB, A8 Brakes Front & Rear, 18" RS4 Reps
    2006 Passion Red Volvo V50 T5 AWD 6MT
    "You need to know what you are doing...Its like a rainbow jungle in there." - Redline380

  3. #3
    Senior Member Two Rings
    Join Date
    Dec 30 2013
    AZ Member #
    137488
    Location
    Australia

    Regarding the battery voltage gauge moving slightly and waving up and down instead of sitting constant how it normally does. Once I cleaned the terminals, this stopped. Thanks for the advice.



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