A white silicone spray grease will work.  I typically use an actual grease ( apply with your hand ) as it stays longer and you can work it in around the latch.   If the door is actually closed, it doesn't always mean the latch is fully closed.  The latch can be " stuck " so sometimes it fully latches and sometimes it does not.  This is where the application of a good grease comes in.  I would clean up all your door latches first, then properly re-grease them and see if this resolves your issue.   Fully disabling the switch is not the way to fix your issue.  Swapping out a new latch may resolve the issue BUT so would cleaning up and properly re-greasing the door latches.   Another couple of possibilities:   1 )  Does your year Edge have a lot of sensors, ie; proximity sensors for cars getting to close, etc.?  As in my 2020, I have a lot of sensors and these sensors run 24/7, even when the car is shut off.  When the battery drains down to a certain level ( I don't know what that level is ), I get a funny message on my display, telling me to shut the engine off or drive the car.  The car is obviously not running in the garage overnight.  This was resolved by using a Smart Battery Tender to keep the battery charged when I am not driving the car.  Once I did that, the problem never returned.           I presume it's fairly cold in Canada, so this could be a likely culprit.      2 )  Another possibility is that you may have a short somewhere in the wiring.  Picture this:  I know someone who had bought a new car years back.  He came out one winter morning and found all his windows were down in the car.  He knows it wasn't his doing.  This " process " repeated itself intermittently over time, so one winter night he sat in the shadows and watched his car to see who was messing with him.  On this particular night, he watched as all his car windows suddenly went down on their own at 4 AM.            As it turned out, he had a wiring short somewhere but the dealership / manufacturer refused to look for and fix it so he sold the car.   I really think your issue is either dirty latches or option # 1 above.

Super common issue. There are a multitude of ways to either fix it, or disable it. I am surprised a google search for "ford edge door ajar" didn't link to more than one thread here. Once you figure out what door it is, it can be replaced (the latch) or some go so far as to just break out the switch so it never works, which I would find annoying, but not as as annoying as lights on all night or alarm sounding, or errors while driving.

Do you remember where you got power for the front 2 doors. I was able to use the window wire for the rears but all I can find in the front is a constant 12 volt wire that  powers the door.module  I need to find a acc wire so the lights go off with the car.  Did you use one of the small 20 gauge wires?

Door is definitely closed. The door ajar issue is pretty intermittent.  Stays on for a while, can't seem to get rid of it and then just today it is gone again.  I did spray it with some electrical contact cleaner some time ago but didn't seem to make much difference.  I also live in a cold climate so I have been waiting for some better weather to look at it and a nice say yesterday is now snow today. The weird part is the alarm going off randomly, unless that is how it's supposed to work if the interior lights stay on for a certain duration like 3:00 am the other night, then again this morning.  I parked it in the garage at lunch and 'door ajar' was gone and interior lights were off.   So related to a lubricant. I do have some white silicon grease in a spray can.  Is that a good grease option?

First and foremost, as you didn't mention, Is the door ajar alarm actually as a result of you not fully closing the door?   - It may look closed, but doesn't mean it actually is.   First thing I would do is clean up the door latch and use some grease on that latch.  You can spray it with a lubricant, like WD-40 but it doesn't last as long as a good grease will.

I would rip it out in a second if I could get rid of the eject button. It is always being touched and pausing whatever media is playing while it decides if there is a disc or not. I thought it would be easy to get to and disable when I had the center stack out, but it wasn't, and it seems to be logic and not a stand alone circuit to snip. I was happy when my 2017 Escape and 2019 Edge didn't have them.   I did find my old "driving CD's" I burned so many years ago, but with 5 or 6 streaming audio selections, XM, and USB drives, I can deal not using a CD ever again.

I bit the bullet and got an entire new set of tires. Michelin Cross Climate 2. I'm really fussy about tires and was bothered about the mismatch. I am retired and drive only about 4,000 miles/year. These should last a really long time.

I'm jealous you have cd players.

Not sure where to post this exactly so here goes.  Having an intermittent door ajar issue and last night the alarm goes off at 3:00 am and my dome lights won't go off so time to get serious about addressing this. I can find a few suggestions online regarding spraying the door latch etc. but then the last one I found related to an F150 said to check the wiring harness which I think makes sense and I plan on doing.  I was also looking for a replacement wiring harness as an alternative to maybe soldering wires assuming I can even figure out which ones might be broken but not much luck finding that part # and I know in the past the members here have been good at sharing info like that.   Any suggestions on what fixes work here I am also open to hearing about.

This is the route I went with after three plastic pans. Doorman makes one with the similar PCV venting as the 2015 OEM so I didn't have to go the valve cover Ford fix. I did it my way, didn't remove anything but the pan, Sawz-alled the corner off the plastic leaky one and carefully ground out a contoured shape to fit the pan back in. No comments needed as to integrity, I decided it was no big deal and well within the boxed part of the frame. No more problems with future  R&Rs. I also used Flepro paper Karopak gasket from a guy who makes them on eBay. I applied the holy grail of gasket sealants, Permatex No. 2, as God intended for oil pans  Do your own thing with regard to silicon dabbed on seems and perhaps around the vent locations on the pan rail, two small areas. It is fixed, leak free and Ford can stick their plastic pans and zero customer service you know where.