My navigation screen shows me being in another part of town and travelling through rivers. On my M5 I can press three keys at once to reboot the system. Is there a way to reboot the PCM?

Even after parking overnight, when I came out this morning the NAV still showed me in the wrong place.

Any other suggestions besides PCM reboot?

 

You can disconnect main battery for a few min. You will probably need a radio code to input after you reconnect.