We don't have a lot of Ford Flex cooling system problems on file — feel free to add yours here. The most common Flex cooling system problems cost $5,500 to fix & occur at 64,000 miles. Click on a year below.

Worst Cooling System Problems
water pump leaking coolant internally 2010 Ford Flex
car is overheating 2009 Ford Flex
cooling fans cause whining and vibration 2012 Ford Flex