If your 2020 Ford Expedition alarm keeps going off, it could be due to a variety of reasons. Here are a few common causes and how to fix them
Loose or damaged wiring Check the wiring harness for any damage or loose connections. If you find any, repair or replace the damaged wiring.
Faulty door or window sensors The door or window sensors may be faulty, causing the alarm to go off when a door or window is opened or closed. To test the sensors, open and close each door and window and listen for the alarm to sound. If the alarm sounds when a door or window is opened or closed, the sensor is faulty and should be replaced.
Faulty key fob The key fob may be faulty, causing the alarm to go off when it is in close proximity to the vehicle. To test the key fob, try pressing the lock and unlock buttons on the key fob. If the alarm sounds when you press the lock button, the key fob is faulty and should be replaced.