Fast Idle Speed
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2002 Mercedes-Benz SLK320, 2002 Mercedes-Benz SLK32, 2002 Mercedes-Benz SLK230, 2002 Mercedes-Benz SL600, and 2002 Mercedes-Benz SL500. However, it is still accessible from the selected car via links, so may be relevant.
Fast idle speed is electronically controlled and not adjustable.