Battery (charging) warning light is on
This page is for information only; a mechanic makes the diagnosis.
Likely causes
A battery light while the engine runs usually means a fault in the charging system rather than the battery itself, so the battery is not being charged. Common causes are the alternator, its voltage regulator and a broken or slipping serpentine belt.
Can I keep driving?
The car runs on the remaining battery power for a while and then stops. Switch off electrical loads and drive to the nearest mechanic; if the belt broke, the water pump stops on some vehicles, so watch the temperature.
Related parts
Tap a part to see listings of that type.
The same symptom can have different causes; have a mechanic look at the vehicle before buying a part and, if possible, get the part code from them.
Frequently asked questions
What are the likely causes of "Battery (charging) warning light is on"?
A battery light while the engine runs usually means a fault in the charging system rather than the battery itself, so the battery is not being charged. Common causes are the alternator, its voltage regulator and a broken or slipping serpentine belt.
Can I drive with "Battery (charging) warning light is on"?
The car runs on the remaining battery power for a while and then stops. Switch off electrical loads and drive to the nearest mechanic; if the belt broke, the water pump stops on some vehicles, so watch the temperature.
Which parts should be checked for "Battery (charging) warning light is on"?
Common causes include these parts: Alternator, Voltage Regulator, Serpentine Belt. The mechanic who sees the vehicle decides which one to replace.