How do I disable the 2012 ford f150 alarm?

To disable the alarm on a 2012 Ford F-150 You're first going to need to turn the engine off and take the key out of the ignition. Now look at the instrument cluster and if You see a red lock light that means it isn't recognizing the key You're using. Next You need to put in the original key and move the vehicle in to the on position but do not try and start the engine. The vehicle will take a moment to recognize the key but then it will not disable the alarm. If You're experiencing a different type of problem with the alarm You can remove the battery from the vehicle for 20 to 30 min so that the entire vehicle resets to the factory settings.