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      11-04-2012, 10:31 AM   #3
Reznick
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Drives: 2008 M3 ,2000 330
Join Date: Jul 2007
Location: Syracuse NY

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Quote:
Originally Posted by Brad from the OC View Post
Check your coolant level and do the venting procedure. If it doesn't recirculate the coolant and vent, then the water pump isn't working.
+1.I always hate to go to worst case scenarios, but water pumps are known to go on X5's pretty randomly. I've seen the average repair bill for a new pump install to be about $1200, If you're handy with wrenches at all you could do it for cheap , but its time consuming http://www.bimmerfest.com/forums/sho...d.php?t=598167. Hope everything works out for you.