One problem related to front suspension upper ball joint has been reported for the 2003 Toyota Tacoma. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Tacoma based on all problems reported for the 2003 Tacoma.
In January 2006, I received a recall notice from Toyota ball joints on our 2003 Tacoma. I scheduled with the dealer and they were all replaced. Christmas day of 2007, I experienced a catastrophic failure of the ball joints on the right side. Both upper and lower separated while driving at about 30 mph. And, the wheel pretty much separated from the vehicle. (vehicle stopped without injury). Vehicle was towed and all four ball joints needed to be replaced. Vehicle is a 2003 Toyota Tacoma with 74,0000 miles. Mileage on Toyota-replaced ball joints could not have been more than about 20,000 miles when they failed.