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Should the Auxiliary Battery Be Replaced If It Fails?

1 Answers

SanJonathan

07/30/25 9:24am

Auxiliary battery failure requires timely replacement. The following are the symptoms of auxiliary battery failure and related information: Symptoms of Auxiliary Battery Failure: Auxiliary battery failure can cause the auto start-stop system to malfunction. It is necessary to check the meaning of common fault codes for troubleshooting, such as low battery voltage, damaged battery, control circuit faults, auxiliary battery fuse damage, generator or charging system abnormalities, and related wiring harness faults. Analysis should be based on the specific fault conditions. Function of the Auxiliary Battery: The auxiliary battery supplies power to the vehicle's multimedia system, doors, and lighting system during the ignition process. Inside the auxiliary battery, there are several large capacitors that discharge to power the electrical equipment during the vehicle's startup. Daily Maintenance of the Auxiliary Battery: Proper use and maintenance of the battery during daily use are essential. Try to minimize or avoid using high-power vehicle electrical equipment, such as audio systems and air conditioning, when the engine is off or idling.

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