Ford F150 F250: Why Does My Alarm Keep Going Off?

This article applies to the ford F-150 (2004-2014) and F-250, F-350 Super Duty (2005-2014).

A faulty alarm can mean a number of things, but if you are not near a garage when it happens, there are a few simple procedures you can follow to diagnose the problem.

Step 1 - Try resetting the alarm

Put the key in the ignition and turn the ignition until it reaches the point just before the engine starts. In the next five seconds, locate the valet/override button and press it until either the LED light in your dash turns solid or the siren chirps once, or both.

That worked, but why did this happen in the first place?

Faulty door latches, bad wiring, and various other reasons could be attributed to the problem.

Step 2 - Adjust or replace the hood pin

Locate the hood pin tied to your car alarm and replace or adjust if necessary.

All fixed, but what could have caused the malfunction?

Your hood pin was probably out of alignment.

Step 3 - Clean out keyless entry controls and replace the batteries

Sometimes the interior of your keyless entry control can get a little cruddy. If this is a problem, a deep cleaning and battery replacement will stop your car from sounding random sirens.

If all else fails, disarm the alarm.

So you’re stranded in an unfamiliar place, your car is making strange sounds, and you’re light years away from a garage. Maybe your car really is haunted. On the other hand, it’s possible that one of the doors on your F-150 or Super Duty is simply ajar. If you open and close all doors and still have a problem, it’s best to attempt to disarm the alarm.

Related Sites

• Alarm Won't Shut Off with Battery Replaced - F150forum.com
• Fixed F-150 Problem: Car Honking Won't Stop - AR15.com