How do you reset the service indicator on 2003 Mercedes e320?

To reset the service indicator on a 2003 Mercedes E320, turn the ignition key to the "ON" position without starting the engine. Press the gas pedal three times within 10 seconds. After this, turn the ignition off and then back to the "ON" position to verify that the service indicator has been reset. If necessary, repeat the process to ensure it has been successfully cleared.