Using Generic Scan Tool
WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2002 Mercedes-Benz CL500, 2001 Mercedes-Benz CL500, 2000 Mercedes-Benz SL500, 2000 Mercedes-Benz S430, and 2000 Mercedes-Benz ML55. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Connect generic scan tool to diagnostic connector located under left side of dashboard. See Fig 1. Turn ignition on. Follow tool manufacturer's instructions for reading fault codes. If no fault codes are present, but vehicle is experiencing a problem, go to SYMPTOM DIAGNOSTICS .