Since the first week I've had my 2019 MKZ I've had problems with the Sync 3 (initial phone iPhone 8+). The general symptoms are starts normal in home screen and then, after driving 50' the screen locks up, turns blue, until speed is <10mph and then the back up camera shows up on the screen, and no controls work: A/C, radio, phone, etc. After a month of trouble shooting the dealer replaced the APIM and things were better for about a month. Over the last two weeks these symptoms, and other variations on the theme, have increased in frequency. I switched to an iPhone XR on 6/22 - about the same time they replaced the APIM - but it has just started acting up almost daily over the last week or so. The dealer's ace tech guy spoke with Ford and they said the problem MAY be the phone. They just did a reset to manufacturer's set up, and we have NOT synched the phone - which is a bit of an inconvenience in a $38000 car to say the least!! Like most I use my phone a fair amount while I am driving. Fortunately I am not in GA or NY where I'd earn an expensive citation for holding onto my phone.
The photo below is one of those variations - the home screen navi info on the left, and a blank screen with the + for zoom on the back up camera and the back up alert info on the top right. This is the latest variation.
The question is - have any of you experienced a similar problem and, if so, how did you resolve the problem?? I am anxious to hear!!