Two problems related to cruise control have been reported for the 2010 Volkswagen Jetta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Volkswagen Jetta based on all problems reported for the 2010 Jetta.
Unexpected acceleration on cruise control. When the cruise control is set, pressing the 'coast/decellerate' button several times causes the cruise control unit to jump by several mph, I. E. Accelerate. Example: cruise is set at 55 mph. Press the coast button three or four times (car should decellerate by 1 mph for each press of the button), the cruise speed will set at a higher speed, such as 58 mph. This can be observed by looking at the display which shows the speed at which the cruise control is set, as well as the acceleration of the car. This behavior can be easily replicated and demonstrated, though it does not occur every time. This has been observed for the past several months.
The contact owns a 2010 Volkswagen Jetta. The contact stated she was driving at speeds of 78 mph with the cruise control activated. When depressing the brake pedal to deactivate the cruise control, the vehicle abnormally accelerated without warning. The contact was barely able to maintain control of the vehicle and as the vehicle proceed to travel off the roadway, she engaged the emergency brake and was able to stop the vehicle without incident. The dealer took the vehicle for a test drive but he was unable to duplicate the failure. A diagnostic would not produce any failure codes and there were no repairs made to the vehicle. The failure mileage was 4,850 and the current mileage was 51,035.