How to Reset Service Light Smart Roadster Coupe model year from 2003 to 2006

Switch ignition ON.
Immediatly press the center button on the back of the speedometer 2 or 3 times until service interval indicator appears in the display.
Switch ignition OFF.
Press and hold the same button and turn ignition ON.
After 10 seconds the new interval will appear in the display, release the button.
Switch ignition OFF.
The information in this tutorial is valid for the following Smart Roadster Coupe years / versions:

- Smart Roadster Coupe 60 - Petrol - 2003, 2004, 2005, 2006
- Smart Roadster Coupe Brabus - Petrol - 2004, 2005, 2006