What happens after disconnecting the battery and alt
 

After changing the alternator, my nav screen was back to default colors and settings. I needed codes for radio and nav. My address book wiped. My seat memory wiped.

However, my previous destinations, had some old ones in there, but not recent ones, and my phone pairin was still stored in there. Phone worked straight.

How?


Also, I have a feeling have to press Auto on the AC once I park for a while. And that my USB restarts from the top of list.

Before, all settings including AC on or off remained as they were, and the USB would pick up from when I turned off the car.

Anyone experience this as well?