Michelin Defender MS vs MS2

That's very interesting. What all gets reset when one unhooks the battery like that?

 

Not sure. I think the truck/ecu "learns" some of your driving habits. And the drive by wire system adjusts to your driving style. That aspect will be reset.

I did not lose any head unit settings.

 

Your A & B trip meters will zero out. That's all I know about.

 

After the reset it took a couple/few days to settle in. Initially the idle RPM after start and idle when coming to a stop were much lower than it was before the reset.

Idle rpm's crept back up after a few days but are still consistently lower than they were before reset.

 

When you disconnect your battery it sets the throttle body or ECU back to factory settings. It takes a little driving for the computer to return to the learned value and the idle will return to normal.