Cruise Control problems of the 2003 Hyundai Santa Fe

Random unintended gradual acelleration. Happens at any speed. Feels like when you resume cruise control to a higher speed. Except it doesn"t stop and continues acellerating. Though it may not be related to the cruise control at all. Pumping the gas pedal once stops the acelleration. Although last time it took 2 tries. Can live with it. So far anyway. But don't want to sell it without fixing the problem. The Hyundai dealership is no help. Happens maybe 3 or 4 times a week (100 miles).

I have experienced my 4th incident of sudden unintended acceleration on my 2003 Hyundai Santa Fe. I have reported this to you three times before. I am concerned that I may injure myself or another person when this happens. I now drive with my hand on the shift lever and put the car into neutral when nearing any possible situation where I could hit another car or a pedestrian. I am becoming so adept at this maneuver that last time it happened I put it in neutral automatically. I was badly shaken, but nothing serious happened. I have reported this to Hyundai America and they are not concerned. They have inspected the problem and claim that the car is safe to drive. The consumer stated she had already been driving for a few hours, so the engine was warm. The cruise control was on and she was headed up a mountain highway, when suddenly the vehicle lunged forward, increasing in speed as she was cresting the hill. As she headed down, braking, the tachometer continued to widely go up and down and the engine was revving up . Once she pulled over, the vehicle stalled. The vehicle was towed to the dealer. They downloaded a computer upgrade and over the next 4-5 weeks on occasion, the vehicle would stall at low speeds. According to the invoice, the throttle position sensor was replaced. Updated ivoq 11/03/10.

Cruise control does not always respond when accelerating. At times the car slows down to point that it is a hazard for us and any car near to us. There has been three occasions that accidents almost happened. In order to get it under control, the car has to coast to the side of the highway and set for a short period before I can continue. I have talked to the dealer on two occasions. The first time they told me that they had never hear of such a thing and they would call the factory. When I hadn't heard from them for quite a long time I returned to the same place. This time they didn't acknowledge that I had ever been in with a complaint.

On various occassions the spedometer will cease working while driving affecting the cruise control. Also, car sometimes feels like it's slipping out of gear while driving. Occassionally, while car is idling, car will shut down with no warning.

Thr cruise control accelerates the car for no apparent reason. The automatic transmission jerks when shifting dislodging all passangers. The accelerater takes a few moments to get the car going. The problems with the transmission and the cruise control happen at all speeds, weather conditions and road conditions.