Should the Faulty Auxiliary Battery of a Mercedes-Benz Be Replaced?
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When the auxiliary battery of a Mercedes-Benz malfunctions, it needs to be repaired or replaced at a 4S dealership, as the issue cannot be resolved automatically. A faulty auxiliary battery indicates a problem with the vehicle's engine battery, which should not be taken lightly. Here are the relevant details: 1. The role of the Mercedes-Benz auxiliary battery: The auxiliary battery acts as a large capacitor. On one hand, it powers entertainment, lighting, and other systems when the engine starts, is not running, or operates at low speeds. Functions such as auto start-stop, dashboard indicator lights, music display screen, HOLD function, and window operations fall under its purview. On the other hand, it assists the main battery in supplying power when there are too many electrical devices or high power consumption. 2. The auxiliary battery is prone to damage: Since it absorbs sudden voltage overloads in the circuit to better protect electrical devices, the auxiliary battery is susceptible to failure. Once damaged, many functions may cease to work, including auto start-stop, reverse radar, seat heating, and HOLD.