I was today years old when I learned this

[NavyChief]

Maybe ive been living under a rock but I just found out late last night that if you pull the trailer wiring plug out with the truck locked the alarm goes off.
My neighbors know about this feature now as well lol

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[Lricaud81]

Thats pretty neat. Would've never thought something like that would happen. Thats what my country self would call .... fancy. Lol
I'll have to try it on mine. I have a stx so wonder if it's across all trims or higher ones.

 

[fordtruckman2003]

Yep it pulses voltage through the trailer wiring. There are threads of people complaining because on some trailers it will light up the trailer lights enough to bother people in camp grounds.

 

[Lricaud81]

So question. Is it 4 flat or round plug or both does this.

 

[FirstTimeFord]

Curious if this is model or package specific? My 23 150 Platinum has the trailer alarm. When I told my buddy about it, he tried on his 23 450 and it did not work.

 

[Lricaud81]

Curious if this is model or package specific? My 23 150 Platinum has the trailer alarm. When I told my buddy about it, he tried on his 23 450 and it did not work.

Does it work with the flat or round plug or both. I'll have to try mine but it's only an stx

 

[FirstTimeFord]

Does it work with the flat or round plug or both. I'll have to try mine but it's only an stx

Can only confirm flat on my Platty. It did work after locking truck with fob or keypad. Checked both

 

[Lricaud81]

Can only confirm flat on my Platty. It did work after locking truck with fob or keypad. Checked both

I'm gonna have to try it.
Quick question you said your platinum has the trailer alarm. Does it say that on window sticker as a package or you just called it that since it set yours off when you unplugged it

 

[FirstTimeFord]

I don't recall ever seeing anything about "trailer alarm". Advanced security was removed, that I do remember. Believe that's just the vehicle motion and interior motion sense though.

 

[Lricaud81]

I don't recall ever seeing anyone about "trailer alarm". Advanced security was removed, that I do remember. Believe that's just the vehicle motion and interior motion sense though.

O ok. I'll have to try it on mine just to see.

 

[fordtruckman2003]

Should probably mention this function is only supposed to work if you have your truck locked up. Then it is "armed."

 

[starr_stealer]

Got a pontoon trailer, one of the running lights got hit and broke off. Every now and then this triggers my alarm for some reason. I have to remember to disconnect the trailer at the ramp

 

[NavyChief]

Mine is a base XL and it was the round plug. I haven't tried it on the flat one. I do have the bluetooth trailer brake controller inline but not sure that makes a difference.

The only options on my sticker are

5.0
3.31 locking diff
Class 4 hitch
Rear Defrost

 

[Roger1108]

Maybe ive been living under a rock but I just found out late last night that if you pull the trailer wiring plug out with the truck locked the alarm goes off.
My neighbors know about this feature now as well lol

Yes, my 2021 has the same system, pull either one works on my F150 hybrid

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