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Old 01-08-2013, 04:46 PM   #4
MachRc
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Join Date: Sep 2002
Location: City of Angels
Posts: 6,497
My Ride: 2003 Technik S1 M3
Ive had the tach twitch and go up very quickly and down while the car was turned off, but never just stop working like what you have stated.
after searching

http://forum.e46fanatics.com/showthread.php?t=841598

it may be related to fuse or try reseting the gauge cluster
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