Why is my battery light on in my Ford Expedition?

If it wasn’t periodically recharged, it would go dead. That’s why your vehicle probably comes with an alternator (as well as a voltage regulator) that keeps the battery charged. When the voltage that this alternator is producing gets too low, your battery light will come on, which is the dashboard icon you see.

What does the battery light mean on a Ford?

The battery light comes on when it detects that the voltage in the battery is too low. Most battery lights will come on when the vehicle starts if the computer has detected that the voltage was too low for a quality start. With an older battery, you will often notice this on the first truly cold day of the year.

Why does the battery light come on after the alternator is replaced?

This would make the Battery Light come on. It is also possible that there is a problem with the fusible link or the alternator fuse for the charging system.

What are the symptoms of a bad alternator in a Ford F150?

Here are the most common symptoms of a bad alternator in a Ford F150: The battery light is designed to tell you that there is not enough voltage to properly charge the battery, or that the battery itself is not holding the proper voltage. In rare occasions the service engine soon light may light up.

How can I tell if my alternator is working or not?

If you’re not 100% sure, you can use a multimeter, or a voltmeter, to check the current coming from your battery. Attach the positive lead to the positive battery terminal, that’s the red one, and then the negative leave it to the black terminal. With the engine off you should be getting a reading of 12.5 volts on your multimeter.

What should I do if my alternator is not charging?

The alternator normally lasts longer than the battery. There are some easy steps you can go through to check the function of your alternator. Tap the alternator carefully with a hammer while the engine is runnin; if the charging goes back to normal, the coals inside it are worn out.

Why does my Ford Expedition have a battery warning light?

“Island cars” tend to have problems based on inactivity. I’d put some miles on the car and see if it fixes itself. Hop on the ferry, drive to Cleveland, and watch the Indians afternoon game. Put some heat in the whole system. Update.

This would make the Battery Light come on. It is also possible that there is a problem with the fusible link or the alternator fuse for the charging system.

What kind of battery does Ford Expedition have?

It is a 2012 Expedition with a 5.4 L engine. I tested the battery with a load tester, and it was good. Also the load tester after starting tested in the green, so 14 volts. My volt meter on the dash is straight up in the middle where it should be, and appears to be working.