Why Does My F150 Beep Twice (When I Lock It)?

why does my f150 beep twice when i lock it

If you’ve recently become a new owner of a Ford F150 and have experienced the honking that happens twice when you lock it, it can be quite disconcerting. If you’re not used to this function it might worry you, or just annoy the heck off you and make you want to turn the beeping off.

If either of those sound like you, here’s why your F150 beeps twice when you lock it, and details on how you can turn off the double honk on a Ford F150. 

Why does my F150 beep twice? Your Ford F150 beeps twice when you lock it to warn you that a door or trunk is not shut properly or if the engine is running. The double honk is a safety feature to tell you to go back and check all doors are closed fully. 

I must give Ford credit for thinking of this feature. 

Not only do they make sure your car will beep twice when you lock all doors, but if an open door is detected then the sound becomes louder and more frequent until it’s closed or locked up tight – which can also happen automatically depending on how things are set. 

It is not intended to be turned off as it is a safety feature to keep you from leaving your Ford F150 accidentally running in an enclosed area such as a garage. But yes, it is annoying for many of us who will want to turn off the double honk on a Ford f150.

Why does my f150 honk when I close the door?

If you open the door of your F150 while the engine is still running, the double honk horn sound will be heard. Some Ford F150 drivers find this annoying as they may have to keep the engine running for some minor outdoor work. 

With keyless entry, however, drivers do not need to provide keys to enter their F150 if they have their fobs with them. The built-in system recognizes that the fob is within range and can unlock the doors and start the engine when you’re in range.

There is a double beep when a Ford F150’s hood is open on remote start vehicles, and the light will not flash. This beep occurs when a door other than the driver’s side door is opened or closed once the car has been shut off, but the key is still in the ignition.

Why your F150 beeps or honks twice (all reasons)

1. Faulty ignition switch: 

If you have a faulty ignition switch, the F150 will think the key is still inside the truck which can trigger a beeping sound.

2. Leave the key in the ignition: 

If you leave the key in the ignition, the truck will think someone is trying to steal it and will trigger an alarm.

Handy Hint: Here are alternative reasons why your Ford F150’s alarm keeps going off.

3. Doors chime contact

If the door chime contact next to the ignition cylinder has fallen out of the slot it can cause a beeping sound.

4. Fob battery fault

A dead fob battery can also cause the truck to think someone is trying to steal it, which will trigger an alarm. Make sure your key fob battery has plenty of life left.

5. Low temperature

Some models have a feature built-in whereby when the temperature gets down to 4°C the car will beep to warn you that there could be ice about and to drive carefully.

6. Seat belts, door ajar, lights on

If any of these things are not working properly, they can also trigger a beeping sound in your truck.

7. Faulty latches

If your door’s latch is sticking and triggering the ajar alarm, try lubricating with WD-40. If it still doesn’t work then you’ll need to replace that lock!

How do you turn off the double honk on a Ford F150?

Whilst not advised as it’s a safety feature, some drivers have figured out how to stop the Ford F150 beeping twice when you lock it open the door. 

Buy a ODB2 adapter (view on Amazon), grab a laptop and the free software download from FORScan. Then follow the instructions below to see how to stop the double honk in your F150…

How to stop the twice beeping in a Ford F150

  1. Download FORScan. This is the software you’ll need to grab in order to fix the double beep issue in your F150.
  2. Connect the OBD2 adapter to the F150’s OBD port.
  3. Download and install the FORScan software on your laptop. 
  4. Start-up the FORScan software.
  5. Click on “Module Programming”.
  6. Click on the “BCM” module.
  7. In the “Base Configuration” section, look for the parameter called “Horn Double Honk”.
  8. Change the value from “Enabled” to “Disabled”.
  9. Save the changes and exit out of FORScan.
  10. Unplug the cable and you’re all set! Your truck will no longer double beep when you lock it.

This video shows you to stop the double honk on a 2021 Ford F150 Lariat which might work on your model.

Take it to a Ford dealership

If you’ve tried all of these things and the beeping persists, then take your F150 to a Ford dealership for further diagnosis.

I recommend that you call the SRS service provider as soon as you feel any of the given reasons above. SRS is a safety restraint system that immediately calls qualified technicians who fix your truck with efficiency.

Handy Hint: If you ever lose keys, here are some tips on how to unlock a Ford F150 without the keys.

Related questions: 

Why my F150 does beep 5 times?

If you’re experiencing 5 long beeps (approximately 1 second apart) for several sets, then this is your truck’s way of telling you something’s wrong.

Beeping 5 times on the Ford F150 is to highlight a problem with the airbag warning lamp and/or the SRS. If the airbag warning lamp is out on the gauge cluster, then the beeps are there to highlight this. If the bulb is not faulty the beeping indicates a problem with the SRS (safety restraint system).

What is F150 FORScan used for?

FORScan is used for curing two beep problems by following methods or steps.

  • Detect and update vehicle’s on-board network configuration.
  • Clear, read and reset Diagnostic Trouble Codes (DTC) from all modules (see the list of modulessupported).
  • Sensors readers from modules sensors.
  • Perform test diagnostic procedures.
  • Perform procedures on services..

What is mislock?

Mislock warns you that your vehicle has not been locked. This happens if any door of your F150 is not shut properly and you try to lock the truck with the fob. Then the indicator won’t blink causing mislock feature.  

How to disable Ford F150 double honk?

The Ford F150 is a workhorse of a truck, but its double honking feature can be more of a nuisance than a help. If you find yourself accidentally honking the horn when you hit the remote start button, there’s an easy way to disable it. Just press and hold the lock and unlock buttons on the remote for five seconds. 

This will disable the double honk feature and prevent any accidental honks in the future. Of course, if you ever need to enable the double honk again, just follow the same steps.

How to fix Ford F150 false alarm?

If your Ford F-150 is prone to false alarms, there are a few things you can do to fix the problem. First, make sure that all the doors and windows are shut properly. If the truck thinks that a door is open, it will trigger an alarm. 

You should also check the door chime contact to make sure it’s in the proper slot. If it’s not, the truck will think someone is trying to break in and will sound the alarm. 

Finally, if you have an aftermarket alarm system, make sure it’s properly installed and that all the wiring is secure. If any of the wires are loose, it could trigger a false alarm.


There’s no doubt that it can be very annoying when your F150 beeps twice when you lock it. But… consider how it might actually be very helpful one day. Based on that, I’d leave the functionality.

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Josh Henderson

Hi I'm Josh and I'm a huge pickup enthusiast. I started this website in 2018 in order to share all my projects and custom mod tips that I've done with my own Ford F-150.

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