2018 Ford Expedition Alarm: Why It Keeps Going Off

There’s nothing more frustrating than being woken up in the middle of the night by your car alarm. And if you own a 2018 Ford Expedition, you’re not alone. This is a common problem with this model, and it can be both annoying and inconvenient.

In this guide, we’ll walk you through the steps to troubleshoot the issue and get your alarm to stop going off. We’ll also provide some tips on how to prevent this from happening in the future.

So if you’re tired of being woken up by your car alarm, read on!

Reasons Why 2018 Ford Expedition Alarm Keeps Going Off

Here are the reasons:

Loose or damaged wiring

The most common cause of a car alarm going off is a loose or damaged wire. This can happen if the wire is pinched or chafed, or if it comes loose from the connector. To check for a loose or damaged wire, you will need to inspect the wiring harness under the hood and in the interior of the vehicle. Look for any wires that are frayed, cracked, or disconnected. If you find a damaged wire, you will need to replace it.

Faulty door or hood switch

The door and hood switches are responsible for telling the alarm system when a door or the hood is open. If one of these switches is faulty, the alarm may think that a door or the hood is open when it is not, and will go off. To check the door and hood switches, you will need to use a multimeter to test their resistance. If the resistance is too high or too low, the switch will need to be replaced.

Faulty alarm system

In some cases, the alarm system itself may be the cause of the problem. This could be due to a software glitch, a hardware failure, or a problem with the battery. To diagnose a problem with the alarm system, you will need to use a diagnostic tool to read the system’s codes. Once you have identified the problem, you can either repair or replace the alarm system.

Other causes

Other causes of a car alarm going off include:

A faulty key fob
A problem with the ignition switch
A problem with the starter
A problem with the battery
A problem with the alternator

How to Troubleshoot: 2018 Ford Expedition Alarm Keeps Going Off

The alarm on your 2018 Ford Expedition may go off for a variety of reasons. It could be a simple problem, such as a loose wire or a faulty sensor. Or, it could be a more serious issue, such as a problem with the alarm system itself.

In this article, we will walk you through the steps to troubleshoot a 2018 Ford Expedition alarm that keeps going off. We will start with the simple solutions and work our way up to the more complex ones.

Step 1: Check the Vehicle’s Manual

The first step to troubleshooting any problem with your vehicle is to check the owner’s manual. The manual will provide you with a basic overview of the alarm system and instructions on how to reset it.

If you do not have the owner’s manual, you can find a copy online or at your local Ford dealer.

Step 2: Check the Door and Window Sensors

One of the most common causes of a car alarm going off is a problem with the door or window sensors. If one of the sensors is not working properly, it could send a signal to the alarm system that the door or window is open, even when it is closed.

To check the door and window sensors, start by opening and closing all of the doors and windows. If the alarm goes off when you open a door or window, the sensor for that door or window is likely faulty.

You can also check the sensors by using a voltmeter. To do this, connect the voltmeter to the positive and negative terminals of the sensor. If the sensor is working properly, the voltmeter should read between 12 and 14 volts.

If you find that one of the sensors is not working properly, you will need to replace it. You can find replacement sensors at your local Ford dealer or online.

Step 3: Check the Hood and Trunk Sensors

The hood and trunk sensors on your Ford Expedition can also cause the alarm to go off if they are not working properly. To check these sensors, open the hood and trunk and look for the sensors. The hood sensor is usually located near the front of the hood, and the trunk sensor is usually located near the back of the trunk.

If you see any damage to the sensors, they will need to be replaced. You can find replacement sensors at your local Ford dealer or online.

Step 4: Check the Alarm System

If you have checked all of the sensors and they are all working properly, the problem could be with the alarm system itself. To check the alarm system, you will need to use a diagnostic tool.

You can find diagnostic tools at your local Ford dealer or online.

Once you have the diagnostic tool, connect it to your Ford Expedition’s OBD-II port. The OBD-II port is located under the steering column.

Once the diagnostic tool is connected, it will scan the alarm system for any codes. If there are any codes, they will be displayed on the diagnostic tool’s screen.

The codes will tell you what is wrong with the alarm system. You can then use the diagnostic tool to reset the alarm system or to repair the problem.

Step 5: Take Your Vehicle to a Dealership

If you have tried all of the steps above and you are still unable to troubleshoot the problem, you will need to take your vehicle to a dealership. The dealership will be able to diagnose the problem and repair it.

Conclusion

The alarm on your 2018 Ford Expedition can be a nuisance, but it is usually easy to troubleshoot. By following the steps in this article, you should be able to get the alarm to stop going off.

If you have any questions or concerns, you can always contact your local Ford dealer.

Also Read: 2018 Ford Expedition Radio Not Working

2018 Ford Expedition Alarm Keeps Going Off: FAQs

Why is my 2018 Ford Expedition alarm going off?

There are a few possible reasons why your 2018 Ford Expedition alarm may be going off. Here are some of the most common causes:

A door or window is open: The most common reason for an alarm to go off is because a door or window is open. Make sure all of the doors and windows are closed and locked before setting the alarm.

The hood is open: Another common cause of an alarm going off is if the hood is open. Make sure the hood is closed and latched before setting the alarm.

The key fob is too close to the vehicle: If the key fob is too close to the vehicle, it can sometimes trigger the alarm. Try moving the key fob away from the vehicle and see if that stops the alarm from going off.

The battery in the key fob is low: If the battery in the key fob is low, it can sometimes cause the alarm to go off. Try replacing the battery in the key fob and see if that stops the alarm from going off.

The alarm is malfunctioning: In rare cases, the alarm may malfunction and go off for no reason. If you have tried all of the above steps and the alarm is still going off, you may need to take your vehicle to a dealer to have the alarm system checked.

How do I turn off my 2018 Ford Expedition alarm?

There are a few ways to turn off your 2018 Ford Expedition alarm. Here are the two most common methods:

Using the key fob: To turn off the alarm using the key fob, press the lock button on the key fob twice.

Using the interior door handle: To turn off the alarm using the interior door handle, open the door and press the inside door handle twice.

How do I prevent my 2018 Ford Expedition alarm from going off?

There are a few things you can do to prevent your 2018 Ford Expedition alarm from going off:

Make sure all of the doors and windows are closed and locked before setting the alarm:

Keep the key fob away from the vehicle when it is not in use:

Replace the battery in the key fob regularly:

Have the alarm system checked regularly to make sure it is working properly:

What should I do if my 2018 Ford Expedition alarm is going off and I can’t turn it off?

If your 2018 Ford Expedition alarm is going off and you can’t turn it off, there are a few things you can do:

Try turning off the alarm using the key fob or the interior door handle:

If that doesn’t work, you can try disconnecting the battery: To do this, open the hood and locate the battery. Disconnect the positive battery cable first, then the negative battery cable.

If you are still unable to turn off the alarm, you can call a locksmith or a Ford dealer: They will be able to help you turn off the alarm and diagnose the problem.

What are the common problems with the 2018 Ford Expedition alarm system?

The 2018 Ford Expedition alarm system is generally reliable, but there are a few common problems that can occur. Here are some of the most common problems:

The alarm goes off for no reason: This can be caused by a faulty sensor, a low battery in the key fob, or a malfunctioning alarm system.

The alarm doesn’t go off when it should: This can be caused by a faulty sensor, a dead battery in the key fob, or a problem with the alarm system programming.

The alarm is difficult to turn off: This can be caused by a faulty sensor, a dead battery in the key fob, or a problem with the alarm system programming.

If you are experiencing any of these problems with your 2018 Ford Expedition alarm system, you should take your vehicle to a dealer to have the problem diagnosed and repaired.