Honda Civic LX 2010 battery light intermittently on after alternator and belt replacement on Honda Civic

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Honda Civic LX 2010 owners report experiencing intermittent battery light issues after replacing the alternator and belt. These problems may stem from a slipping serpentine belt that obstructs power supply from the alternator, leading to insufficient electrical current and improper battery charging. Additionally, some owners encounter faulty replacement alternators, which can also trigger the battery light. Other potential causes include damaged wires, corrosion on electrical connectors and battery terminals, bad ground connections, loose or corroded connections, damaged wiring, blown fuses, or underlying battery issues. It is crucial for owners to ensure all connections to the alternator are secure and that the belt and mounting bolts are tight to avoid charging system problems. Testing the battery and charging system can help diagnose any issues accurately. If the problem persists, consulting a professional mechanic may be necessary for further diagnosis.

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