Automatic Transmission Control Module problems of the 2015 Ford Taurus

While I was merging into traffic onto an interstate, during rush hour, the car quit accelerating. Suddenly, there was no ability to control engine speed. As I glanced at the dash I noticed the wrench warning light and it said see manual. I was almost side swiped by another vehicle but was able avoid the car and was able to coast to a stop on the side of the interstate. When I pressed the button, the car shut off and when I depressed it again, the car started. I was able to merge into traffic and head home. One the way home, on the interstate, the same vehicle malfunction occurred again. There was a car behind me but I quickly turned my flashers on and was able to coast to the side of he interstate. I took the car to the dealership to have it looked at and at this time they have not been able to isolate the problem. Hard to trust the safety & reliability of the vehicle when the authorized service professionals can't find the problem. Additionally, they said the computer did not store all of the codes and all they had was a pcm communication error code. This is a serious safety issue, particularly if it requires frequent driving in heavily congested traffic, and if you are traveling at higher speeds on the interstate.