I have a Roadster 2.5 with the the Alpine IVA-NAV-10 console unit (as supplied by Tesla).
Every now and then, I get a message on the screen saying "SUB Updated. Press any key.".
I don't know if this is an update message from Alpine or from the vehicle? [What is a "SUB"?]
Anyone know what this is referring to?
(Usual apologies if this has been previously answered but the key words were too common to search for.)