Why does my alarm go off about an hour after I lock my vehicle with the key fob.

I found on another site (Which I can't find now) is that you sit inside your vehicle with the doors locked. The vehicle was not running. Manually unlock one door. Now this is where I can't remember if the alarm is silent of goes off when you open the door from the inside. I think it should be silent. I tested each door...twice. Relock the vehicle and do this with each door. I could not check the tailgate. When I had the doors locked and manually unlocked the front passenger door and opened it, the alarm went off. Replaced that sensor and the problem was fixed. Again, I can't remember if the alarm goes off or is silent. Sometimes more than one sensor is bad.

my little buddy just bought two of these in the past year, 2007 Escapes.one for $700.00 and one for $500.00.they look brand new,so he got a very good deal on em.he was having the same problem with the door ajar switches sticking,waking him and neighbors up in the middle of the night.i told him to spray wd-40 on/in the door latches until it ran out the bottom of the doors,so he did.he opened and closed the doors several times and the switch(s) quit sticking now,working like they are on steroids,just gob it in there! those switches are $30.00 each at O'reilly Auto Parts for the Motorcraft Brand! he is working part time at a parts house now,so when people come in wanting to buy door ajar switches,he just tells em they don't need em and grabs his can of wd and goes out and fixes them for the folks,they love him!........................................................................................................................................................ 2006 ford escape intermittent alarm and door … www.youtube.com/watch?v=uV1r9wUy6_M

I got my problem solved. I bought this 02 Escape used and here is a little more info. As I mentioned, I never saw a dome light on or an open door indicator on my dash during an alarm event. When I locked w FOB, after about an hour, the horn would go off and the parking lights would flash. I also noticed the horn would not honk when I pressed the lock button twice on the FOB but did not think much of it. No alarms ever occurred when I locked the car with button on door. I bought a wireless OBDII scan tool and downloaded a free program called Forescan to scan my vehicle using my windows 7 laptop. The program is not the most intuitive but it works well. The vehicle stores 8 alarm events most of which were a Panic event. I started thinking more and more that I may have a bad remote that was acting like the panic button was being pressed. Here is where it got really weird. The FOB that I had with this vehicle only had 2 buttons; lock and unlock no red horn button (panic). Remember, I bought the thing used, (actually at an auction). I found and old 3 button remote, programmed it for my 2002 Escape and Problem Solved! I also noticed that with the correct remote, the horn honks when I press the lock button twice as if to arm the alarm. I am guessing with the 2 button remote, the alarm, never full sets and after a period the alarm goes off. It is very unlikely that someone else would have this same scenario as I did but the big takeaway here is that anyone can buy a $20.00 scan tool and download a free program to help trouble shoot their problems. Thanks.