Two problems related to service brakes have been reported for the 2003 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Hyundai Sonata based on all problems reported for the 2003 Sonata.
While driving 55 mph consumer applied the brakes and vehicle continued to speed. Driver was able to maintain control of the vehicle, and drove the vehicle to the dealer for inspection. Mechanic could not resolve the problem.
When the brakes were applied, the vehicle experienced a heavy vibration, the dealer inspected the vehicle 3 times and was unable to determine the cause.