Mine is the same model year as yours with no indicators in the mirrors so here is the procedure from the handbook. (its on page 28 of the interior book)
Turn key to position 2 in ignition and press the 0 button (left side of cluster) twice within 1 second
Turn key back to 0 position. Keep 0 button pressed.
Service display with current remaining distance or time appears
After 10 seconds an acoustic signal will sound and the service display with the new starting distance or time appears for 10 seconds.
Release button 0.
Havent tried this myself but thats what is stated in the handbook. Hope it works!