Is your Mercedes ML-Class dashboard lighting up with an ESP/BAS or ABS warning light? A faulty lateral acceleration sensor (also called a G-sensor) could be the culprit. This part (OEM number A1635420618) is a direct replacement for the 1998-2002 Mercedes-Benz M-Class (W163). This sensor helps the vehicle's stability control system know how the car is leaning or sliding. Replacing it can restore proper function to your ESP and traction control systems. IMPORTANT: Please confirm your exact Mercedes model and year before purchasing. Professional installation is recommended as it involves the safety systems.