What does it mean when a Mercedes-Benz displays an auxiliary battery malfunction?

1 Answers
LeStephen
07/29/25 1:10pm
It is a sign before the car battery fails. More related information is as follows: 1. The car battery indicator light turns on or bulges: This is the most common and intuitive sign. When the car battery warning light on the dashboard illuminates, the owner must take it seriously. The illumination of the warning light indicates that the car battery has already malfunctioned, or if bulging is observed on the battery. 2. The headlights become dim: Power for the headlights, brake lights, and audio systems in the car comes from the car battery. If the headlights become noticeably dimmer or the brake lights appear very weak when braking, it indicates that the car battery is nearing failure. 3. Difficulty starting the car: Difficulty starting the car is another major sign of battery failure. If the owner usually starts the car without issues but suddenly finds it hard to start, it means there is a problem with the car battery. It may be close to being completely depleted and can no longer supply power normally. At this point, the owner should replace the battery; otherwise, the car will not function properly.
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