Dealing with the same issue on 2022 MXP. It is really sporadic. I'll go a week no issue, then do a 70mi drive where GPS is way off and navigation is unusable the entire drive. Then on the drive back it's normal. I have a service appointment scheduled 11/8 and mentioned this thread. I did the bug report and took photos. The changed my appointment from service center to mobile. Will report back on how it goes. Anyone have this fixed with a mobile appt?
I was also just about to hard wire my Valenentine V1 radar detector, but obviously will wait until after this service appointment. I kinda want to say to the tech, hey while you're in there