One problem related to ball joint has been reported for the 2003 Ford Windstar. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Windstar based on all problems reported for the 2003 Windstar.
Bought the 2003 Windstar in 04/26/ 2004 it was a certified program car from a dealer and had mileage of 013335 we have had several problems with it. First the rear doors will close and then reopen the dealer replaced the sensors in the doors still have that problem, second the ball joints need replaced, third the passenger window would not roll up or down intermittently, fourth lift gate door ajar light keeps coming on you get out and shut it and it still is on next time you open and close maybe a day or two later it will go off, fifth the abs and brake lights on dash come on and sixth the passenger door ajar light comes on and won't go off. The side doors and the window was noticed before the warranty went out so we bought the extended warranty.