I have a 2002 E825 and need a little advice!

Im interested in finding out how to display the mileage or hours. Based on the owners manual the number that comes up is very low.(4) Im wondering with the battery replacement if it lost the memory? Based on tire wear it should be under 200 miles. Original tires.

When you turn the key off, the spedometer will momentarially switch to an odometer: thousands - hundreds - tens - ones. Then it will go to 0000 which I’ve been told is 0 -millions - hundred thousands - ten thousands.

The mileage is stored in the controller in nom volatile flash memory, so it’s not going to be lost if you disconnect the batteries

Thank you so much for you response!