Why does the fault light come on after replacing the car battery?

1 Answers
LaCharlie
07/29/25 10:06pm
The issue is caused by a malfunction in the battery charging controller. Here is the relevant information: 1. Solution: If the battery charging controller is faulty, promptly visit the car's 4S shop or a repair shop to inspect or replace the battery charging controller to resolve the battery issue. 2. Battery discharge: The car battery light may come on primarily due to battery discharge, especially in cars that have been left unused for an extended period. Discharge is a common occurrence in such cases. Simply starting the car engine will directly drive the alternator via the belt, and the generated electricity, after rectification and voltage stabilization, will directly charge the car battery.
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