I have a 2010 Kia Sportage with approximately 28,000 miles. I bought it new in 2010.
I started to notice the ESC OFF light turning on periodically about two years ago.
All of a sudden the ESC OFF light will come on, and the vehicle will lose torque, and it will settle to a slow speed of about 30 miles per hr. I come out of this predicament by pressing the ESC button. (I sometimes press it when I start the car, for fear of the problem happening when I need to accelerate). Otherwise I must turn the car off and restart it. Most of the time the car will work well after restarting. This problem happens randomly. I have not been able to notice a pattern.
I took my car to the dealer to be fixed, under extended warranty, but they could not see it happen. They did other adjustments, and fixes.
A few weeks ago, as soon as I saw it happen, I carefully drove to the dealer without restarting the car (i.e. with the ESC OFF button pressed) and showed them the problem by releasing the ESC button.
They proposed replacing a "YAW sensor", but were honest to tell me that they did not know for sure whether that would fix the problem, and told me that if this replacement didn't solve the problem I would have to cover the $850.00 cost, because the insurance does not cover it.
I believe KIA should fix this problem for me. The car is under extended warranty, and it only has 28000 miles on it. This is a dangerous problem. I sincerely hope KIA is not waiting for a bad accident to happen before they find a solution, as it has happened with other car manufacturers.