High RPM's at start up and no control of gas pedal on 2001 Mercedes-Benz S430

At start up car idles to 3,000. No acceleration / response from gas pedal. No indicator lights / warning lights are on dash.

Asked by for the 2001 Mercedes-Benz S430
my first response is to check your throttle pedal sensor. it is located on the accelerator pedal inside of the vehicle.
1 more answer
Before we can answer, does the idle speed come down by itself at some point in time? If so, approximately how many minutes after the engine idles at 3,000 RPM?
Scottsdale Airport Autocare, Inc.