Engine over heating? on 2006 BMW 325i

Whilst driving my 2006 325i Touring the yellow temp waring light came on quickly followed by the red temp light asking me to stop immediatley. I got the car towed to my local garage who left the car running for over 1hr and could not get it to over heat. Any ideas on what the problem could be? Only other thing was that the fans were blowing cold when the red temp light was on and the fan under the bonnet was going crazy!

by in New York, NY on May 17, 2010
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1 answer 2 comments
ANSWER by , October 07, 2010
Probably water pump - just happened to my '06 325i sedan - exact same symptoms - cranked heat and blew cold air and dealer coudln't reproduce but checked codes and indicated water pump.
COMMENT by , October 19, 2010
More than likely the water pump. I just had mine replaced along with the thermostat and the coolant tank....$1,300 repair.
COMMENT by , December 27, 2010
This just happened to me also (2006-325i sedan)....exact same symptoms!! The heat blew cold, yellow then red temp light!! I went to the dealer and they gave me an estimate of $1650 + labor costs; to repair the water pump, thermostat and coolant. I told them to not do ANYTHING and I went to get a second opinion. I ended up paying $1000 total at an independent repair shop that specialized in BMW, LEXUS, AUDI and the problem was fixed!!! The dealer tried to take advantage because I am a female!!!