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Old 11-07-2011, 09:41 PM   #2
LOWvert
former Honda man...
 
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Join Date: Nov 2005
Location: Markham
Posts: 55
it is probably the prongs on the circular knob that may have broken off... it is sort of like a "T" where when you turn the knob the top edges of the "T" turn left and right to depress buttons on the printed circuit board... I don't think BMW sells this part separately as I just looked on realoem.com and couldn't find it to show you.
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