I would like EVERYONE to go to the poll above and VOTE so we can see how big of a problem this is... vote if your waterpump has failed or not on your e8x car.
I want EVERYONE to post!:
N51, N52 and
N54 and
N55 owners to
VOTE! 
I would like people who have had their electric waterpump(or thermostat) fail - to post their info in this thread and also vote in the above POLL.
Also please post your Model Year/production date and the miles when your pump failed. And also IF your the pump failure was covered by BMW or if you had to pay for it. Costs to you.
Thanks,
Dackel
example...
Model Year/Production date_______
Miles________
Warranty/Good Will ?______Engine Code__
2009 / May 2008 ______56K______cost me... $$$ not covered under warranty or good will_______N54
Here are two water pump replacement DIY's... (on the e90post)...
DIY electric water pump VIDEO for N-series (N51/N52.N54/N55) engines...
http://www.1addicts.com/forums/showt...7#post15632917
DIY – Water Pump & Thermostadt Replacement (2007, 335i w/Automatic Transmision)
http://www.e90post.com/forums/showthread.php?t=784416
Pictures: Electric water pump + thermostat replace
http://www.e90post.com/forums/showthread.php?t=347412