Mercedes vito o6 model service indicator reset?

Answer 1

Ignition on to 2nd stage
Bring up service reminder with dash button (press the button twice)
Turn the ignition off (do not remove key)
Bring up service reminder with dash button and hold down for up to 10sec. While pressing down the button, turn the ignition key back to 2nd stage.

If it doesn't clear with the first try, try again (i had to do it a couple of times to get it right