Will There Be Any Impact If the Mercedes Auxiliary Battery Failure Is Not Replaced?

1 Answers
DeMicah
07/29/25 11:12pm
No impact. The auxiliary battery is specifically responsible for the engine start-stop function and is not related to the main battery, so it will not affect normal driving. However, it may sometimes cause the dashboard to not display instrument status, and the auto start-stop function may become unusable. Below is some information about the auxiliary battery: 1. Introduction: The "auxiliary battery" is not actually a battery but a capacitor or a sensor. 2. Auxiliary battery failure: The repair depends on the meaning of the fault code. It could be due to low battery voltage, battery damage, or possible wiring or control circuit faults.
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