What Causes The Battery Light To Come On. Disconnect the positive cable from your car battery. This will result in a reset of the cars central computer.

This will result in a reset of the cars central computer. Basically the light indicates a battery charging problem. Another possibility of battery light on in car is the bad battery cable.
If the battery warning light a light in the shape of a battery symbol on the dashboard comes on while youre driving that means the charging system isnt.
Id probably Next clean grounds including frame grounds and battery cables. Disconnect the positive cable from your car battery. Simply remove the terminal covers disconnect the battery cables and give the terminals a hearty scrub. If the battery light comes on and stays on while you are driving the most common cause is a broken alternator belt.
