Using Generic Scan Tool
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2002 Mercedes-Benz SL500, 2002 Mercedes-Benz S500, 2002 Mercedes-Benz S430, 2002 Mercedes-Benz E55, and 2002 Mercedes-Benz E430. 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 TROUBLE SHOOTING - NO CODES (ENGINE 113 - EXCEPT G500) article.