Software problems of the 2011 Kia Motor Sorento

1) the vehicle has stalled out six (6) times during my ownership. This has occurred after stopping. I was able to restart the vehicle four of the six times by stopping, putting the vehicle in park, and pressing the "start" ignition button. Two of the six times the gear was locked into drive and neutral only. The vehicle would also not shut off. Both times 911 was called for California highway patrol assistance was contacted as I was stranded on the freeway. This occurred on 2/20/14 and 6/03/14. On 5/17/14 the vehicle was brought into the kia car pros carson facility for the 60,000 mile maintenance and passed with no issues. 2) the backup camera flutters intermittently (about 10-15 times a month) mostly in the morning on start up and sometimes at night. Kia of cerritos had replaced the navigation/radio module 3 times, but official records show it was replaced only twice. This has not rectified the issue as it still persists. 3) the radio inconsistently (about 2-5 times a month) does not start for about 20 seconds after starting the vehicle up. I am not confident that the issues are resolved and I fear for the safety of myself and all who ride in the vehicle. The kia car pros carson facility replaced the drive assist part and cleaned the electrical contacts for the first incident in Feb 2014. I was told this would rectify the issue. On 6/03/14, I was told a software update to the ecu (electrical control unit) was performed, but they do not guarantee that the problem has been resolved. I want the facility to retain my vehicle and perform a full diagnostic on the vehicle until they can guarantee that it will not stall and lock up on me again. Corporate kia said the vehicle can be released and the facility will not investigate any further. I do not believe kia is taking this matter seriously.

This is my wife's vehicle, but given the issue she is afraid to drive it. . . . . Driving up hill with my foot on the gas pedal at 50 mph. My vehicle lost power ( as if I slammed on the brake ) my body went forward and was stopped by the seatbelt. My head whipped downward. Then the vehicle surged forward. My head and body slapped back into the seat. It was so abrupt and violently. It will scare you to death. This has happened to many times over the last year to count. I have tried to document the events in a journal because the dealer has been able to duplicate it only once. Some days it can happen up to 3 times a day for weeks on end. Some times I can duplicate it driving up hill and sometimes nothing. The worst times are when merging into traffic or when someone is following to close behind me. My fear is that I will hurt another motorist or a passenger in my vehicle. A term called " limp mode " has been said to me. Where the transmission shifts to a hi gear to protect it from damage. My vehicle still does this at least once every other day. I have been to the dealer 14 times. The tranny was replaced a year ago and a backfire code was found recently. A computer software update that didn't help was the last thing done in over a year, unless you count paying for rental vehicles doing something. There is also a suspension/steering issue. A hard pulling left/right and bump steer. The vehicle will pull the steering wheel out of your hand in turns and veers as it hits bumps.