How do you reset red ec light on 1997 mercedes 320sl?

To reset the red "EC" light on a 1997 Mercedes 320SL, first, ensure that the vehicle is in a safe, stationary position. Turn the ignition key to the “ON” position without starting the engine. Press the gas pedal fully three times within five seconds, then turn the ignition off. This should reset the "EC" light; if the light persists, it may indicate an underlying issue that requires further diagnosis.