AFAIK.... number 1 resets its self every time u turn the ignition off, where as number 2 doesnt.
so basically, number 1 is what u have done (time, distance, average speed, mpg, etc) since u turned the car on.
and number 2 is what you have done since u manually resetted it yourself (by holding the switch to the right hand '0' button)
i think....
