The reason You’re seeing the battery light on steadily in Your 2001 Ford F-150 is because Your alternator is producing too low of a voltage, and isn’t charging Your battery. Now, the most obvious reason for this is that the alternator’s gone belly up and You’re going to need to replace it.

How do you reset the battery light on a Ford F 150?

Now, for a battery relearn, switch the ignition on, with the engine off. Pull and release the high beaM5 times. Press and release the brake pedal 3 times. If You’ve done this correctly, the battery light will flasH3 times within 15 seconds of completion.

What happens if my battery light is on?

If your battery warning light comes on whilst you’re driving, it means that your battery is no longer being charged by the alternator and is running only on its own charge. That means that your car is only running on battery power that will eventually run out, bringing your car to a halt.

How do I reset my Ford battery?

1) Ignition on (engine off), headlight flashers 5 times, then brake pedal 3 times. Battery indicator lamp will flash meaning success. 3) Ignition on (engine off), lights on, fog light button 5 times, then hazard 3 times. Battery indicator lamp will flash meaning success.

What does the battery light mean on a Ford f150?

The battery light on/off indicates problems with the alternator and battery. So, when you see your battery light is on, you have to perform a voltage and battery test to ensure which component is creating this ‘on and off issue.

Why does my battery light come on in my Ford F150?

The voltage from the alternator is sent to the battery through a wire that connects to the battery post. If the battery post is really corroded, it won’t be able to do its job of sending the voltage to and from the battery efficiently, and your F150’s battery light will turn on. It only takes a second to check it out.

What should the battery voltage be on a Ford F150?

Specifically, you’ll need to set it to 20V DC. With your F150 turned off, you’ll connect the negative side of the meter to the negative battery post or wire. Touch the positive side of the voltmeter to the positive battery wire. With the engine off, you should get a reading somewhere between 12.0 volts and 12.6 volts.

What happens if the alternator on a Ford F150 goes bad?

Your F150 will operate for a short period of time off of the battery alone. But, if the alternator has gone bad, it will eventually leave you stranded. If your battery light comes on when you are on the road, get somewhere to have it tested as soon as you can.

How do you test a Ford F150 battery with a multimeter?

Set the multimeter to read voltage. Specifically, you’ll need to set it to 20V DC. With your F150 turned off, you’ll connect the negative side of the meter to the negative battery post or wire. Touch the positive side of the voltmeter to the positive battery wire.