I have 9,000 miles on my truck and have had this thing happen twice so far. I have only had the truck less than 4 months and tow a 15,000 lb 5th wheel camper. 90% of my travel is at highway speeds greater than 55 mph. Each time the regen has happened, I have been at highway speeds and it only took a few minutes for it to go from 100% to 50% to not there any more. about 15 minutes later, I get the check engine light.
Dealership told me they would have to wait for this to occur one more time before Chrysler would authorize the replacement because it is a $2500 part OR I could call Chrysler and generate a ticket and they would authorize it. That was three weeks ago and I keep dealing with the same questions and providing the same answers over and over. One time she says I idle too long, another is I don't drive highway speeds enough .... Getting ill just writing about it!!
Hope one of you can come up with a viable solution - I like the truck but this is killing me!!
Stay safe guys.