W221 2-battery on-board electrical system, function PDF

A technical documentation that details the two-battery on-board electrical system for specified vehicle models. It outlines the function, control, and operational aspects of the electrical system. The document explains the dual roles of the primary and auxiliary batteries, as well as the specific components like the generator and the instrument cluster. It describes scenarios for energy management and emergency use, providing insight into system alerts and battery management. Relevant procedures for maintaining the stability of the electrical system are also discussed.