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      01-22-2013, 10:26 PM   #9
DmitryF30
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Drives: Bimmer
Join Date: Jun 2012
Location: Houston, TX

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2012 328i  [4.50]
2006 M5  [5.00]
Did they properly bleed the system?

There is a chance that while replacing the overflow reservoir they got air in the lines and did not properly bled them. When you put your heater setting to maximum heat and the temperature from the vent randomly varies from hot to cold and back to hot, there is a very good chance that you have air in the system. It shouldn't take you too long to do yourself prior to taking the car back to the dealer. Definitely worth a try:

http://www.e46fanatics.com/forum/sho...d.php?t=689618


It states it in the post above, but you should never take off the radiator cap while bleeding the system - only the overflow tank.

Good luck.
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E36/37 Z3 AUTO - retired
E46 325i MT - retired
E60 545i MT - retired

E60 M5 SMG - fast
F30 328i MT - daily driver