M3 e46 Rear LED(OEM) test sequence on start up?!

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  1. M3 e46 Rear LED(OEM) test sequence on start up?! 
    #1
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    j0nny_10's Car Details
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    Year of Manufacture:
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    check out this you tube video of my OEM factory fitted rear led's on my 2004 M3, it will do this everytime i turn the ignition on. Any ideas why...it looks kinda cool, but why does it do it...... it make me look like a copper or something?! Its an identical sequence everytime...its not random..



    thanks..
     
     

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    #2
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    compactM54's Car Details
    Model of Car:
    325ti [E46]
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    '04
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    It could be the bulb-check feature playing up. I know if you add OEM LED onto an older pre '03 coupe/M3 then you can get some strobing when the bulbs are cold-checked by the LCM.
    If yours is factory OEM LED then the LCM should be LED-aware and not perform this light show. Strange.
    Does make it look like a pace car though!
     
     

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    #3
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    greggie's Car Details
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    Thats so cool, i want mine to do that!

    Its just like the mystery of why my angel eyes do this:


    1999 323Ci SE
     
     

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    #4
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    bio10155's Car Details
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    It might be some pulsing that the check control circuits do to determine resistance if a bulb is blown or not...it will make sense to do this. Filament bulbs don't do this cause the current is soo small that u don't see it. LEDs only need a little power to get them going.
     
     

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