NHTSA Complaint #11696646 — 2014 FORD F-150

Took in my vehicle to my local Ford Dealership after I experineced sudden downshift of the transmission and getting stuck in 1st gear. I asked for a reantal vehicle or a loaner to which they said, it would depend whether or not there would be any PCM related codes that came back after connecting the car. According to them no codes came back, and explained to me that, that being the case that they would just need to reprogram my PCM. The next day I went and picked up my truck, and after just about roughly 7 miles into driving, I started experiencing sudden downshift again and my truck started slowing down rapidly almost causing an accident and getting rear ended. I was able to pull over and noticed this time my truck had gotten stuck in 4th gear. I was able to drive it back to the dealership and left it parked in the their parking lot as it was after hours at this point. The very next morning by 7:30AM I was at their service desk explaining what had happened the night before after picking up my truck from them. They refused to give me any further service as they said that they had already completed the service related to the 24S37 recall, and that if I continued to experience issues, that it was a completly unrelated issue and if I wanted to get it diagnose and repaired that it would be out of pocket. After doing more reserach online, I came to find out that on some of this recall issues related to 24S37, in some cases the dealership would have to replace the entire Lead Frame which holds the Transmission output shaft speed sensor which goes bad and causes the transmission to go crazy and thus the downshifting, and in other cases they don't have to replace this part. In my case, while there were no other codes that showed, they determined that only a reprogramming was necessary. However, given that I continue to experience the same sudden downshift issues, I suspect that it is a bad output shaft speed sensor which should be replaced under the current safety recall.