Using Hand Held Tester (HHT)
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2000 Mercedes-Benz ML320, 2000 Mercedes-Benz E320, 2000 Mercedes-Benz CLK320, 2000 Mercedes-Benz C280, and 1999 Mercedes-Benz ML320. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Connect HHT to 38-pin diagnostic connector located in right rear of engine compartment. Turn ignition on. Follow manufacturer's instructions for reading fault codes. If no fault codes are present, but vehicle is experiencing a problem, go to SYMPTOM DIAGNOSTICS .