Was driving freeway, noted sudden deceleration (about 20 mph and not more), check engine lights and ESC off lights were on. Had to pull over the left side of lane # 1. a police car had to stop traffic to safely exit the freeway. Vehicle was towed to a dealer and they replaced throttle position sensor assy

- La Mesa, CA, USA

Yesterday (September 19, 2010) while merging onto the beltway, the floor mat of my 2008 Hyundai Santa Fe caused the car to continue to accelerate after I had taken my foot off of the accelerator. I pumped the brake and tapped the accelerator and the pedal must have come free from the floor mat. The acceleration lasted for between three and four seconds. After I stopped the car I looked down and saw the floor mat was partially covering the accelerator pedal. I have now removed the floor mat.

- Kensington, MD, USA

Twice I have experienced sudden unintended acceleration (sua) in the past few weeks. The first time I was traveling on a primary road going the speed limit 45 mph. While my foot was steady on the accelerator, the car just suddenly accelerated without me pushing down on the accelerator pedal. I tried putting on the brake and that didn't seem to help any. I thought it could be my sandal stuck under the accelerator.....after moving my right foot around, that did nothing; then attempted to move the mat with my right hand, that did nothing, and I put on the brake and that slowed the car down and I continued to drive as if nothing had happened. Fortunately, there were no cars near me to crash into. The second time I experienced sua, I was traveling on a major highway at the start of rush hour traffic traveling at approx 65 mph (the speed limit) when again the car just suddenly accelerated. I put on the brake which did nothing, then tried the brake a second time, which did nothing, and then I was able to gradually depress the emergency brake and get the car to come to a stop on the right shoulder of the highway after crossing two lanes. Again, I was fortunate to be able to make these maneuvers without causing an accident. Since this was the second time the car had sua, I didn't think it was a good idea to drive it anymore until I could have the Hyundai dealer take a look and find out what why this was occurring. After two days at the service center at the dealership, they have been running diagnostic tests as well as trying to reproduce the sua without any success and have deemed the car acceptable to drive with nothing showing out of the ordinary.

- Highlands Ranch, CO, USA

While driving on the highway, the accelerator died (I.e., gas pedal would not work), causing car to lose speed. Check engine light came on at same time. Car only had 17,000 miles on it with no prior issues. Pulled over to shoulder, turned off car. Re-started car and took it to a service station, which identified (via computer hook-up) a "throttle position" sensor issue.

- Washington, DC, USA

While driving on highway, gas pedal stop responding. I was able to go to the curb and put car into parking, then I had problem to shut engine off, only second or third attempt was successful. After couple of minutes I start the ignition and engine warning light come on. Car is drivable, but it hesitates when I push the pedal.

- Palatine, IL, USA

2008 Hyundai sante fe. Consumer states unintended acceleration. The consumer stated the accelerator pedal became stuck, which caused the vehicle to accelerate at a high rate of speed. The consumer stated he applied the brake with so much force, that the brakes began to smoke. The consumer took the vehicle to the dealer and they knew right away that problem might have been the throttle sensor module. The throttle position sensor was replaced.

- East Northport, NY, USA

While driving my 2008 Hyundai santa on the highway on two separate occasions last week my Santa Fe decelerated unexpected to ~ 20 mph. The first time the car was on cruise control and started to lose power, the second time I was also using the cruise control and the same problem occurred. At the same time the ESC warning light came on followed by the check engine light. The temperature was cold but the road conditions were dry the vehicle failed to accelerate. I took the car to the dealer and the they were able to fix it by replacing a sensor. This could have resulted in a very dangerous situation on the highway. The SUV failure and current mileage is ~ 25,400 miles.

- Auburn, ME, USA

I have twice experienced a dangerous occurrence during acceleration. I press the gas pedal but when I take my foot off to decelerate, the car continues to gain speed and braking has no effect. In each instance, the only way to make the car slow down or stop was to put it in neutral and find a safe place to allow it to coast until I could turn the engine off. The last occurrence I was going 75 mph on I-35, had to swerve to left shoulder to avoid being sideswiped. My 5 year old granddaughter was in the car with me. I took my vehicle to the dealership for repair and was told both times that the pedal must be sticking on the floor mat. After the second experience, I looked for similar stories on the internet and found 5 recent postings of the same issue happening to other people. If more than a couple of people report the same issue, shouldn't Hyundai make a dedicated effort to identify and correct it immediately or recall the vehicle altogether" I do not believe the mat is causing the problem because the second time it occurred I visually checked the mat and even pulled it backwards with my feet while trying to find a way out of traffic. In addition, if the pedal was sticking on the mat, why would the only corrective action be to place the car in neutral or to turn the engine completely off ? theoretically, wouldn't the accelerator still be "stuck on the mat" in this instance? last and most importantly, even if the claim of the mats being the problem is accurate, these mats are the same that came with the vehicle when purchased. I assume they are produced and/or approved by the manufacturer as part of the finished product and, therefore, Hyundai is still the liable party for any accidents caused by this issue. I have removed the mats entirely from my car but I am petrified to drive it. Does Hyundai really want to wait until a tragedy occurs before considering corrective action"

- The Colony, TX, USA

The contact owns a 2008 Hyundai Santa Fe. While driving approximately 60 mph on normal road conditions and applying pressure to the accelerator pedal, the vehicle failed to accelerate. The contact was able to coast with caution into a parking lot. The vehicle was towed to an authorized dealer for diagnostic testing. The technician stated that the failure was contributed to the throttle sensor assembly. The vehicle was repaired. The contact had concerns of the safety risk involved. The failure and current mileages were 8,452.

- West Babylon, NY, USA