If the battery light comes on and stays on while you are driving the most common cause is a broken alternator belt.
Car battery warning light.
The battery light indicates a battery charging problem.
Top reasons a battery light comes on.
As soon as you start the engine the light goes off and remains off until you stop the engine again unless there s a problem.
The light connects via low voltage wiring to the charging system in your car so there can be several causes.
This light comes on when your alternator is not making electricity and the car is running off of battery power alone.
The battery light or charging warning light available on the dashboard of your car indicates malfunctioning or poor charging of the battery this light illuminates whenever the charging system does not charge the battery with a voltage above approximately 13 5 volts.
Stay calm check your vehicle gauges and reduce power until you re.
There is a problem with the alternator.
The voltage in the battery will drop which causes the battery light to come on.
Stop the vehicle in a safe place turn off the engine and contact us to report your breakdown.
Battery warning light safe to drive.
The charging system warning light should show for a few seconds when you start the car but if the battery light shows while you re driving the vehicle that light signals a problem.
Total failure of the alternator is another possibility.
No if the battery light s red while you re driving you need to have the fault looked at immediately as the battery isn t charging.
This can be a result of a malfunctioning alternator a battery going bad or a number of other things.
This is a system test that indicates the battery light on the dash along with any monitored components of the charging system are working as expected.
The battery warning light in your vehicle turns on when you turn the ignition key to the on position.
It s important to know how to respond when your car s battery light goes on.
Your car s battery light is an indicator of when your car s charging system is malfunctioning.
Every time the vehicle starts up the battery warning light should briefly turn on then back off after a few seconds.
The reason why your car can operate normally even though the battery light is on is because your car can run off the.
You can drive a short distance on the battery especially if you turn off most of your car s electrical items like the radio air conditioning etc but there s no way to know how far you ll get before it dies.
Don t restart the engine as this could make the problem worse.