How do you reset the service indicator on 2007 Mercedes SLK 350?

To reset the service indicator on a 2007 Mercedes SLK 350, turn the ignition to the "On" position without starting the engine. Press the gas pedal three times within five seconds. Afterward, turn the ignition off and then back on to verify that the service indicator has been reset. If successful, the service light should no longer be illuminated.