I am dealing with the same issue since the day I bought my car in April 2018. Every couple days the presets change back to Classic Vinyl, Elvis, NASCAR, MLB, etc. The dealership has had my car for 3 weeks with no repair and no answers. Chrysler customer support is also NO help. Opened a case a month ago. My case manager never calls back. I am beyond frustrated. I think they are aware and have no fix so they are blowing me off. I’m over it. I want a new car.
To me that's a classic low battery error. Your battery is most likely good enough to pass their tests or a connection to the battery is bad, but not good enough for these Pacifica's. What you describe is exactly what happens every time you disconnect a battery for a period of time.
And what dealer keeps a car 3 weeks for a radio issue?
All they can do is try an update, if that doesn't fix it they should replace BOTH batteries(whether they test good or not) and then test the radio, if that doesn't fix it then replace the head unit as a matter of course.
If the new batteries and new Head unit don't fix this radio preset issue then there is a voltage drain coming from somewhere else because no way two head units are gong to have that same type of battery reset error.
They may already know this becasue finding voltage drains like this can be a headache to find, still without new batteries and new a new Uconnect I dont see how they can prove this, they may be wasting time.
All I know is the day I have any issues at all I am dropping in two new batteries before I even make an appointment with the dealer. Too many time we hear people needing batteries and techs taking weeks to determine that. The new battery fixes an issue and they don't even know why.
Why didn't you contact Chrysler Cares? Did you contact them?
And me I love my van, if the radio died I would never sell the van becasue of it, I would have a reason to tell my wife why I should drop in a 5000 watt top of the line after market stereo system. I would lose far too much trading in or selling my new van over a radio. My wife is the type to get rid of the whole van as a point, becasue it should work and would say Chrysler sucks. To me it's a radio and I love this van. Right or wrong I would take it upon myself to get it straightened out. I just googled Toyota and Honda mini van stereo issues and sure enough there are some form 2017 and 2018, so all vans and cars have some issues, as aggravating as it is.
I do hope you get it worked out, email Chrysler Cares and then talk to the dealer afterward, this sounds ridiculous to me. 3 weeks for a radio?