While the engine is running, the battery warning light can indicate that the charging system is not maintaining the expected electrical supply. The battery, alternator, belt, connections, wiring, and control system may all be involved.
Reduce unnecessary electrical loads and follow the vehicle manual. If lights dim, steering assist changes, or the engine begins to stall, stop somewhere safe; a discharged battery can leave the car unable to restart.
Quick educational note
For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.
How to use this information
This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.