How to Reset the Maintenance Light on a Mercedes Benz C300


1. Sit in the driver's seat of the car, and place the key in the ignition. Turn the key until it reaches the first position.
2. Press the 'menu' button on your instrument panel, until the current mileage appears on the display.
3. Press and hold the 'Reset' button on the instrument panel for three seconds. Press 'Reset' again to confirm when the service-interval-reset prompt appears.
4. Turn the key to 'OFF,' and remove it from the ignition.