Turn the key to position 2 in the ignition lock and immediately press the MI (MILES)button twice.
Within 10 seconds, return the key to position 0 in the ignition lock.
Press and hold the button (MI). Turn the key to position 2 in the ignition lock. Keep the button (MI) pressed.
The maintenance indicator with the current remaining time/distance is shown. After about 10 seconds, an acoustic signal will sound and the maintenance indicator is displayed with the new remaining time/distance. Release the button MI(KM).
Turn the ignition off and then start the engine to verify the indicator has been reset.
Turn the key to position 2in the steering lock and immediately press the KM button twice briefly.
Within 10 seconds, turn the key back to position 0 in the steering lock.
Press and hold down the KM button. Turn the key to position 2 in the steering lock. Hold the KM button down for a further 10 seconds.
The service indicator with current remaining distance/remaining time appears.
After about 10 seconds, an acoustic signal will sound and the service displaywith the new remaining distance/remaining time will appear for about 10 seconds.
Relaese the KM button.
All quoted direct from the handbook! It took me a couple of goes to get it to reset (lack of counting ability maybe!) but I got it reset in the end.