What are the causes of auxiliary battery failure in Mercedes-Benz C-Class?

1 Answers
DelIsla
07/30/25 1:39am
Auxiliary battery is a storage battery that works by converting chemical energy into electrical energy to power the vehicle's equipment. The function of the Mercedes auxiliary battery is to prevent power supply interruption to electrical appliances during engine startup, ensuring that comfort functions remain active. The reasons for auxiliary battery failure in Mercedes-Benz C-Class include the following: 1. Low battery voltage or battery damage: Check if the battery has power. If not, charge the battery. 2. Wiring and control circuit faults: First, inspect the generator's belt and plugs for looseness. Tighten any loose connections caused by poor contact.
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