Service indicator can be reset without a VAG COM.
1. Keys out of ignition- press and hold in trip odometer reset button "0.0" on right hand side of display
2. Still holding this button down, insert key into ignition and put to the on position without starting the car.
3. Display will read "service now"
4. let go of the "0.0" button and depress the "m" button on the left hand side of the display. this will re-set the service reminder. There is no confirmation on the display other than the words "service now" will disappear.
You can confirm that the service reminder has been reset, or check how many miles/days remain until service at any time by taking key out of the ignition and holding in the trip reset "0.0" button for between 3 and 5 seconds. The MFD will display miles and hours until next service.