CarPlay GPS navigation issue with 2023 Lincoln with Sync 4
While navigating, the GPS icon for my vehicle goes off the map, wildly, when using CarPlay on my 2023 Lincoln with Sync 4. Issue occurs when connected with wireless CarPlay and wired CarPlay with a Lightning cable (so it's not a Bluetooth issue.) The navigation icon slides sideways, turns backwards, goes into side streets and is otherwise impossible to follow. Carplay works fine with everything EXCEPT GPS apps such as Google maps, Waze, and Apple maps. All these apps have the same issue when trying to navigate somewhere. When it does this, it's impossible to follow the visual navigations instructions so I have to disconnect the iPhone and follow directions on the iPhone itself. (So, the phone is not losing signal or it's GPS location. It's CarPlay-to-CarPlay communications that are the problem).
Both my iPhones (12 and 13) have the issue and are on current OS (16.4.1). Apps are up-to-date. Apps and software IN THE CAR are also up-to-date. Car "APIM" and other hardware checked out by dealership and determined it's not the car hardware. It's clearly an issue between the Carplay app embedded in the car's systems and Carplay on the iPhone. Because it's Carplay related, Ford/Lincoln says it's an Apple problem and they can't fix it.
I've called Lincoln customer support and they don't even understand the problem and say it's an Apple issue. The dealership is sympathetic and has been able to reproduce the problem on other Sync 4 Lincoln cars with other iPhones but they're also saying it's an Apple issue that Ford will have to fix. I called Apple support, and they say it's a Ford/Lincoln issue because the iPhone works perfectly with mapping and navigation when it's not connected to the car.
iPhone 12 Pro Max