Why is the battery light not working on my Ford F-150?

Ford have a nasty habit of not taking care of the battery terminals which will always throw the charging system thru a loop. A lot of times its these simple connections but we throw $$$ thinking that’s the issue because some forum says so… 3 people found this helpful. Start a new Ford F-150 question.

What’s the battery voltage on a Ford F-150?

Batter light stays on. Battery Voltage gauge is at about 75% to the top. With engine off, I’m getting 12.4 volts at the battery. After starting, I’m getting 14.4 volts at idle, at 1500 Rpm, about the same. Under load with high beams and radio,almost-identical. 14.45 And still the battery light stays on.

What to do if your F150 battery post is corroded?

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. A battery post cleaner or wire brush can clean it up in no time.

Why does my Ford F-150 drop 4V?

HAD another truck dropping 4v at the fuse block because of a corroded lug. Ford have a nasty habit of not taking care of the battery terminals which will always throw the charging system thru a loop. A lot of times its these simple connections but we throw $$$ thinking that’s the issue because some forum says so…

Why does my Ford truck have no power?

Parked the 2001 F150 Supercrew 5.4 in the driveway last night and today it won’t do anything at all. No electrical power even with a new battery that I bought because of the problem. I checked the new battery and it has a strong spark, but not even the lights work…NOTHING WORKS.

What should I do if my F150 Battery Light is not working?

With a multimeter you do a quick test to see if your F150’s alternator is working or not. The following was taken from bad alternator diagnosis page on this site: Set the multimeter to read voltage. Specifically, you’ll need to set it to 20V DC.

What should the battery reading be on a Ford F150?

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. Now that you have a baseline, it’s time to turn the engine on.

Why does the battery light keep coming on?

I have a 2013 ford f150 3.5 the battery light keep coming on but the battery is new and the alternator is changing 25 people found this helpful. GuruFL529, if the light is coming on then you may have a computer glitch, so you need to find a shop that can do a through job of testing the entire system.

How to troubleshoot intermittent Battery Light issue in..?

The easiest what to check for this is to have a helper in the driver’s seat, engine running, then you go through and move wires associated with the charging system around a little bit and see if you can get the light to come on. Like I said, a long shot, but about the only other thing you could check.

What causes a battery warning light on the dashboard?

See how you can fix the battery warning light on dashboard with this five problem that you can look at. While the battery light might seem like there is a battery problem, but in fact there could be other numerous issue causing the battery light to activate. To see what is really wrong with the car see this video for things you can check.

Why does the battery light come on on my 2007 Ford F150?

This 2007 Ford F150 came in with the complaint that the battery light would come on about 30 seconds after the engine was started. The voltmeter in the dash indicated the alternator was charging. Checking the system with my charging system analyzer found the charging voltage was good at 14.23 volts and the amperage was at 14 amps.

What to do if your car battery light is not working?

Get the alternator or wiring fixed, and properly recharge the battery at the same time. The folks at AutoZone can always help with battery and charging system issues, both on the car, and with the parts off the car.

Why is the battery light on on my 4.6L?

Broken wire coming off the alternator. It may not look broken but it could be broke inside the insulation. That was the story with my 4.6L. The battery light would come on and off, wiggled the single grey wire and it would turn the light on and off.

Why is the battery light still on after a battery change?

Replaced battery (under warranty, appeared to have one cell bad) but still doing it. Drove to the parts store, pulled the alternator out in the parking lot (could do it in about 5 minutes by now) and brought it in and tested it while hot, it failed.

Why does my truck not start on battery?

Symptoms: Truck will not start on battery power, and struggles to even run lights. Battery installed 8/2014, tests 12.4V static, not load tested yet. Truck has had intermittant no-start issue that has gradually gotten worse. As of yesterday, will NOT start on battery.

Why is my 2004 Ford F-150 not starting?

There are a number of issues that can go wrong with starting system and make your 2004 Ford F-150 car won’t start or hard time to start – This article guides you through some of the facts behind the starting system, and the components that may be to blame, and tells you what action you can take to try to remedy each situation.

What to do if your Ford F-150 won’t start?

Ford F-150 Questions – My truck won’t start just clicks brand new battery and starter silinoi… – CarGurus My truck won’t start just clicks brand new battery and starter silinoid and alternator. Light come on fine radio all that. But won’t start Stick or auto? Check all your ground connections as well 14 people found this helpful.

Why does my F-150 make a clicking sound?

F-150 makes a clicking sound behind the dash. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

What does it mean when a F150 won’t start?

Vocational, Technical or Tra… Got a 99′ F150 that won’t start. It’s been on rare occasion made a noise when I turn the key as if it was already started. Sounds almost like an old model-T horn or something.

What happens when the battery goes out on a Ford F-150?

A battery that is only discharged does not have to be replaced with a new one. If the Ford F-150’s alternator is defective, the battery is no longer charged when driving. This is usually visible through the permanently illuminated battery symbol on the dashboard. Usually this display goes out immediately after starting.

Why does my car not start when I turn the key?

If you turn the key to the “Start” position, but the engine won’t crank; all you hear is a single click or repeated clicking coming from the engine compartment. Very often this could be caused by a low battery or poor connection between the battery and starter. Check the battery and the terminal cable connections.

Is the battery light still on on my Ford Escape?

The light is still on though. The alternator is charging at 13.75 volts when running. I’m stumped, does anyone have any idea what it could be? Thanks in advance

Why is the battery light on but charger is off?

The battery light is on but the voltmeter says 13.5 to 14.5 volts depending on the engine revs. When engine is off the volts drop to about 12. My mechanic says that the alternator must be charging – but why is the light on? Assuming that the voltmeter is correct and reads 13.5v to 14.5v, what could be the problem?

Why is the battery warning light still on on my Ford truck?

This all started after the pickup blew a high pressure oil line and was replaced. The mechanic checked everything and can’t locate any possible signs of a problem. The battery warning light is still lite up when the ignition switch is turned on. The batteries drain when the truck sits. has to be charged up or jumped to start it.

Why does my Ford PowerStroke battery not charge?

It was a fuse in fuse box under the hood. That caused the battery system to not charge. Someone before I owned the truck put a 5 Amp fuse instead of the 10 fuse that was required. All the fuses were checked under the hood several weeks ago and they were all OK.

What to do when your battery light comes on while driving?

If the battery light comes on while the engine is running and the vehicle is being driven, this indicates a problem with the charging system. Step 1: Turn off everything that draws power.

What happens if the alternator fails on a Ford F-150?

There is also a fuseable link on the positive battery cable, if that fails then the alternator can not charge the battery. To check the fuseable link you need a volt meter. Pierce the cable at either end with the volt meter leads with the engine running it should show at least battery voltage 12.5 volts.

Why is my battery on my jump starter not charging?

When wondering why your jump starter won’t charge you need to consider all the possibilities. The AC adaptor or USB cable could be bad. It happens with our other portable devices. Check the cord for damage.

When to replace battery light in Ford F-150?

27 people found this helpful. I replaced my alternator when my battery light came on. 6 months later the battery light came back on and I replaced the alternator again. 4 months later the battery light comes back on alerting every 2-3 mins. I resolved the issue by replacing the Alternator Harness Connector Plug 3 Wire Pigtail.

How can I tell if my Ford F150 alternator is bad?

You can diagnose whether your F150’s alternator is bad pretty quick at home. If you have a voltage meter, that’s a fantastic place to start. Voltage Test The first thing that you’ll want to do is get a good multimeter. With a multimeter you do a quick test to see if your F150’s alternator is working or not.

Why is my Ford F-150 in anti theft mode?

To know if your Ford F-150 is secured, the security light starts to blink, and in this mode, the car cannot start because of the immobilizer. When the car engine doesn’t start, it means your F-150 is experiencing anti-theft issues. To get your Ford F-150 out of anti-theft mode, you will need to perform these steps as fast as possible.

What is the battery voltage on a 2001 Ford F-150?

On my 2001 F-150, I have changed out the battery and alternator, and serpentine since I had it off, anyway. Batter light stays on. Battery Voltage gauge is at about 75% to the top. With engine off, I’m getting 12.4 volts at the battery.

Why does my Ford F-150 won’t start?

Reply to Steve’s Post: the only lights that are inlluminated are the three in the original message. i replaced the throttle body assembly right before the truck died. it started before the replacement but when i went to start it after there was nothing. i disconnected the battery during the exchange. HELLO! Glad to have you back online.

What do you do when the lights go off on a Ford F150?

I disconnected the battery cable and the lights went off. I then straight wired the parking light-tail light circuit to the hot wire in the socket (with switch removed) and the lights came on. I broke the circuit and the lights stayed on.

Why does the battery light not come on?

If your alternator is putting out 10-10.5 volts or less means one of the diode pairs are bad, 5-5.25 volts or less 2 diode pairs are bad. Either way the alternator is not charging the battery and it’s the fault of the voltage regulator. Ask the person doing the test if he can tell you what the field voltage is on the alternator.

When does the battery light come on on a Ford F150?

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. You may have noticed your F150 struggling to start, and then the battery light stays on after the start.

Why does my battery light not come on when I start the car?

Excessive corrosion at the battery terminals can cause a low voltage condition which makes the starter turn slowly when trying to turn on your vehicle, but it will not illuminate the battery light if the alternator is charging properly once the car is started. Step 4: Secure the clamps on to the battery terminals.

Why is the battery light not working on my Ford F-150?