How do you reset run flat indicator on E250 Mercedes 2011?

To reset the run flat indicator on a 2011 Mercedes E250, first ensure that the tire pressures are correctly set. Then, turn the ignition to the "ON" position without starting the engine. Press the gas pedal three times within ten seconds, then turn the ignition off. Start the engine, and the indicator should be reset. If the light persists, consult the vehicle manual or a professional.