What Causes the Auxiliary Battery Malfunction in Mercedes-Benz Vehicles?
1 Answers
Possible causes of the malfunction include a blown auxiliary battery fuse, a faulty auxiliary battery, generator or charging system failure, or related wiring harness issues. Additional information about the auxiliary battery is as follows: 1. The auxiliary battery is the battery that powers the entertainment system, windows, and lighting system during startup. It contains several large capacitors that discharge to power electrical devices during the moment of vehicle ignition. 2. If the auxiliary battery in a Mercedes-Benz malfunctions, it requires repair at an authorized 4S dealership and cannot resolve automatically. A faulty auxiliary battery indicates an issue with the vehicle's main engine battery. Once the auxiliary battery fails, many functions may become inoperative, such as auto start-stop, reverse radar, seat heating, and HOLD functions.