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Lift gate won't open and is constantly triggering alarm

travish325

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#1
Ok get ready for a wild ride....

My lift gate has been intermittent recently. Sometimes it will open sometimes not. Sometimes it will close, sometimes not. Sometimes it will open slightly and stop or close slightly and stop.... Now it's not working whatsoever and soon as I lock my car a few seconds later the alarm goes off and I get a message that the rear lift gate triggered the alarm.

At first I suspected a bad battery as the lights would randomly click on and off at times as if the key was unlocking the car, then I would get a message saying remote features have been disabled as the battery was low. I checked the battery and with the car off it was reading 11.4v. I just replaced it tonight, still no working lift gate and still getting the alarm.

Next, I disabled the lift gate in the vehicle settings, same thing with the alarm going off when I lock it. Then I disconnected the wire for the hands free foot sensor, same thing still, no lift gate with the button or key, and the alarm goes off after locking.

Next, I pulled the 30A fuse in the engine bay for the lift gate module, guess what... Same thing still. I then pulled the 5A fuse inside the cabin for the telematics/hands free lift gate as well, and then finally with both fuses pulled I can lock the car without the lift gate triggering the alarm; however, now I have no lift gate operation whatsoever, and also everything else on that 5A fuse is inop as well because apparently fuse 8 and 9 are the same circuit.

Just to test it, I put the 30A fuse for the lift gate module back in while leaving the 5A hands free fuse out just to see what would happen and immediately the lift gate goes back to triggering the alarm within seconds after locking the car.

So that's where I am at. I can only keep the alarm from going off if I completely disable the rear lift gate by having both the 30A module fuse, AND 5A hands free fuse pulled. What the hell is going on?

*Well update, after having both these fuses pulled, about 20 minutes later the alarm went off again; however, I did not get any Ford pass app message this time. So now back to square one? Even though with both fuses pulled it took longer for the alarm to go off now lol This makes absolutely zero sense.

**Second update. Re-locked it with both fuses out and the alarm has not gone off for a few hours now.
 

Last edited:

23 Explorer ST

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#2
Man that’s crazy! Could be a sensor in the hatch that’s bad causing the alarm to go off.
Also have you replaced your key FOB battery?
I wonder if the FOB itself could be the issue?


Sent from my iPhone using Tapatalk
 

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travish325

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Thread Starter #3
Man that’s crazy! Could be a sensor in the hatch that’s bad causing the alarm to go off.
Also have you replaced your key FOB battery?
I wonder if the FOB itself could be the issue?


Sent from my iPhone using Tapatalk
Brand new battery in both FOBs actually.
 

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#4
Wonder if the latch mechanism is bad…I would assume the latch has a built-in sensor to recognize whether it’s closed or not. Had a similar issue with the hood latch on a previous car, and I just cut the wire and permanently looped them together so that the latch thought it was permanently closed.
 

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travish325

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Thread Starter #5
Changed the latch/actuator today and it made no difference. Alarm still goes off when I lock it, lift gate won't open it close.
 

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#6
My only other guess is a faulty control module or something of that nature.

I assume this happens anywhere and not just when the car is parked in once specific location (making me think about interference)?
 

Wholdy

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#7
This situation happened to me around 2.5 yrs ago after a family member of mine manually closed the lift gate because they were unaware it was powered. They did this 2 separate times and for about next 3-4 weeks after each instance it triggered the alarm randomly but eventually went away. Dealer was unable to diagnose anything at that time and thought maybe manually attempting to close/open was triggering the issue for what’s it’s worth
 

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travish325

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Thread Starter #8
My only other guess is a faulty control module or something of that nature.

I assume this happens anywhere and not just when the car is parked in once specific location (making me think about interference)?
I was thinking the module next as I have checked everything else. It does it anywhere yes, seems to do it every single time now rather than randomly.
 

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travish325

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Thread Starter #9
This situation happened to me around 2.5 yrs ago after a family member of mine manually closed the lift gate because they were unaware it was powered. They did this 2 separate times and for about next 3-4 weeks after each instance it triggered the alarm randomly but eventually went away. Dealer was unable to diagnose anything at that time and thought maybe manually attempting to close/open was triggering the issue for what’s it’s worth
Interesting. I've only manually used it with the lift gate switch disabled in settings. Even then with it disabled and all the fuses pulled for the module and the hands free it still triggers the alarm when locked... It will also give me a random "lift gate ajar" warning even with all those fuses pulled and everything disabled. That light/warning comes and goes though.
 

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travish325

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Thread Starter #10
Just swapped out the lift gate control module and no change. The lift gate unlocks but doesn't move and after closing and locking the car the alarm triggers within a minute.... So the latch and module have been swapped at this point, sensors cleaned, even the hands free antenna wire unplugged and nothing has changed. What else is there at this point? Wiring that I can see all looks fine. The only thing left in the system component wise would be the hands free sensor and lift gate sensors. My local Ford dealer service department is backed up until August right now as well, so I currently have a car that I cannot lock without a working lift gate...
 



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