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Thread: Left turn signal turns off sport mode! 2006 z4M

  1. #1
    Join Date
    Aug 2009
    Location
    Denver
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    My Cars
    Z4M, Xterra, Guzzi

    Left turn signal turns off sport mode! 2006 z4M

    So I have had a problem with the left rear indicator. Replaced the bulb which now works 10 percent of the time.

    Driving in sport mode (always) I noticed I lost power every time I put the left turn indicator on.

    It feels like I drop a cylinder (noticeable but not catastrophic.)

    After a bit of fiddling it appears to be dropping out of sport mode when I turn on the signal. (Doesn't make any difference in power if I use indicator in non-sport mode.)

    Any thoughts on a fix? I can't imagine there's any connection at all between sport mode and indicator electronics but ...

    Thanks.

    K-

  2. #2
    MauiM3Mania's Avatar
    MauiM3Mania is offline Observer/Master Skeptic Moderator
    Join Date
    Jan 2002
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    88M3 99M3 04M3 ITBx16
    Moved discussion from the General BMW Discussion sub-forum.
    04M3 TiAg 69k slick-top 3 pedal
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  3. #3
    Join Date
    Jul 2013
    Location
    Casablanca, Morocco
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    My Cars
    2001 e46 323i
    Don't tell this story to a non-Bmw owner otherwise they're gonna be quick to make that infamous joke about turn signals lol.
    I don't know how they could be related, but the fact that it doesn't work well despite changing the bulb sounds like a faulty relay to me, since my car has the same issue (but nothing power related, non-M E46's don't have a sport mode anyway).

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