W166 M276 remove O2 sensor PDF

A document that provides detailed instructions for removing and installing the heated O2 sensor in a vehicle with an engine model M276. It includes step-by-step guidelines, safety precautions, and associated images that help in identifying various components under the hood. The document specifically refers to models W166 and provides part numbers and torque specifications for reinstallation. The images offer a visual guide to the engine bay, highlighting specific connections and components.