To reset the 2015 Smart forth maintenance service interval, please follow these instructions:
1. Turn the ignition to run (one position before starting engine). 2. Within 4 seconds push TRIP button twice to display service indicator. Switch off ignition within 10 seconds. 3. Push and hold TRIP button. Turn ignition on (do not start engine). Wait until the service indicator flashes and then shows “0”. 4. Release TRIP button. 5. Turn the ignition off and then start the engine to verify the indicator has been reset.