I had TSB 08-047-19 done which is a flash of the Parktronics system and it didn’t help at all. In fact I think it actually made things worse because it’s happening more frequently now.
Is there a different TSB?
I have one numbered "08-076-18". Flash: Parktronic System Module Enhancements. Dated May 26, 2018.
There was another thread on here where a poster was talking about having the same problem. I thought that person said their dealer actually replaced some module and it fixed their problem.
I have had the same issue with way too sensitive emergency braking when backing up. Mine seems to be much better now. But, I have had two things done and I'm not sure if either one or both have anything to do with it. I backed into a pole and got a new bumper and tailgate. I don't know if they replaced anything that would effect this issue. I don't *think* they did, but I don't know for sure.
And, I had my truck in for a clunking noise. Their first repair attempt was to flash all the computers in the truck to the latest firmware. It did not fix the clunking, but I suppose it could have also included an update the changed the emergency backup braking behavior.
Bottom line for me: Mine was so bad I had turned it off - which resulted in me backing into a pole. ARGH! Now, it works well enough that I leave it on and I think I've only had one time where it jammed on the brakes when it shouldn't have.