On forums I can see they do connect the rear fog pin, even if the wiring says "Not used". That means the used/not used status is driven by if the fact of using it in the car, and not in the BCM itself (this may be obvious for some, but I'm happy to have this confirmed): https://www.2gfusions.net/showthread.php?tid=8347

Layout-wise Escape 2020 BCM looks like the one in MachE: https://www.macheforum.com/site/threads/looking-for-a-locator-diagram-for-bcm-pinouts.28362/

Thit suggests the rear fog pin for Escape's BCM being C2280F pin 67:

Yes, this is marked as Not Used in Escape's wiring diagrams (other pins for this connector are either matching or Not Used between Escape and MachE).
Will certainly try this in some near future.

 

The reason that it says not used is that the wiring/pin may be missing and it is not considered a defect as it is not used in that model.
To add rear fogs to a Fusion you have to add a wire/pin to the BCM and the headlamp switch to enable the switch, enable the telltale logic in the IPC (which may or may not be available in the IPC firmware since rear fogs didn't come on North American Fusions), then add wires/pins to the BCM to connect the rear fogs to.

 

Have you managed to install the fog light on your Escape MK4?

 

I haven't checked the BCM yet. I won't do that soon, though, as first I need to check my AWD module (issues similar to https://www.fordescape.org/threads/.../got-an-error-message-awd-fault-service-required-on-my-2020-ford-escape.122366/)

 

It seems BCMs may lack the pin, at least a 2021 Escape FHEV Titanium is reported to not have the pin in the socket.

 

It seems BCMs may lack the pin, at least a 2021 Escape FHEV Titanium is reported to not have the pin in the socket.

Well, it occured to be a problem with considering the pinout to be a view of the socket, while in fact this is a view of the connector - the C2280F's pin 67 is on the left when looking at the BCM (and 2.8mm female terminal needs to be added to the connector). The 2021 Escape owner confirmed this works for him: [Escape - Kuga USA] Tylne światło przeciwmgielne jakie zamontować ? - Strona 10 - Forum Ford Club Polska (post #99).
A custom switch may be a cheaper option, but if one manages to find a decent price for the original switch, the factory solution is there.

 

The connector that I plugged at last into my Escape's BCM socket is this one: Superseal dutinka
I can see this is "Superseal" type female connector for wires 0.75-1.5 mm^2 (I used 0m5 mm^2, though), width: external 2.6mm, internal 1.6mm.
It does not sit perfectly, in the meaning that it has some space (3 mm maybe?) for moving in and out (so the latch is not positioned as would be in a dedicated terminal), but the pins are looong enough for it not to be an issue. Since I already had a Kuga switch and BCM/IPC configured, I could check it right away - and indeed when the rear fog light is switched on, I have >14V on the wire.

I will follow up with my idea of a rear fog light project for Escape as soon as I manage to handle the wires in the rear of my car.

 

As some of us know, the rear fog light is obligatory in Europe. As such, the light itsef needs to be ECE approved (homologated) for being in par with requirements. Such light has the "E" letter and a number for the country it was approved in (any number is good for use in all EU countries).
Probably most of US imported cars drive with whatever was at hand and seemed proper as a rear fog light. Yet I wanted to do it right (and police-proof), so I decided to search for ECE approved lights (already having the light switch from Kuga, rear fog enabled in BCM and IPC, and later BCM's pin 67 routed to the rear of the car).
Before this, I saw some brake light test mentioned on fordescape.org, and the brake light was mounted on the hitch receiver. I did not feel excited to have such a brake light, but thinking about the fog light I remembered the hitch one. And I thought maybe this is not the worst idea, to use usually unused part of my car (it would be much easier if Kuga's rear fog lights matched Escape's bumper holes for reflective lights, but as I hear, they do not).
The law requires one or two fog lights. If two, they need to be places symmetricaly. If one, this needs to be centered or on the left, and at least 25cm above the ground. My hitch is around 35cm above the ground, and is centered, so it's ok as a place for the fog light.
I was browsing through available small ECE approved LED fog lights. Most of the lights are designed for trailers, and they are unfortunately neither small nor pretty.
I had decided to check out Fristom (FT-400 and FT-223), WAŚ (W236 and W238), Hella Valuefit (2NE 357 029-041), Ledautolamps (11FM). I also saw offers on some Chinese ones marked with "E11", same looking and sold as different brands and prices - maybe they are clones of an approved one, or they all got an approval out of the same magician's hat - I wasn't convinced.

From those that somehow fit the purpose, that is to have an approved fog light mounted on the hitch receiver and looking acceptable, worth looking at are:

Fristom FT-223: https://fristom.com/en/offer/fog-lamps/ft-223-led/
Hella Valuefit 2NE 357 029-041: https://www.hella.com/truck/assets/media_global/873_Broschuere_HELLA_ValueFit_PL.pdf
(for the photo: Amazon.de)

Now, most of such lights have mounting screws 45 mm apart. This is the case of Fristom and Hella. Together with M5 nuts (they are 8mm each) the total width is 53mm (in the best case, when nuts are positioned correctly). In my Ford Escape the hitch can accomodate this. It would need some adapter, which could be done using an e.g. 3D printer.
Out of the two, I certainly recommend Fristom FT-223 (priced around 16 EUR). Hella (priced around 28 EUR) looks fine, but you can look at it with your eyes even when it is powered. It draws 0.062 A at 12.1 V. Fristom FT-223 draws 0.155 A and you look at it, you get blinded. Hella is the weakest one I had in my hands - all others, including cheap (11 EUR) and not very pretty WAŚ ones, give stronger light.
This is how Fristom FT-223 looks on the hitch of the Escape (no adapter, just put onto the hitch receiver):

Then I stumbled upon the LED Autolamps 11FM: https://www.ledautolamps-uk.com/rear-lamps/single-lamps/11-Series-Low-Profile-Lamps?product_id=1155
"LED Autolamps" seems to be an Australian company (www.ledautolamps.com), they also have a UK site (www.ledautolamps-uk.com), and lamps they sell in Europe are ECE approved. Their "11FM" is priced around 30-50 EUR, has "E9" approval, 5 years warranty, and, most noticeably, is slim - just 8 mm, to be mounted using a 3M tape and two screws. It is bright (draws 0.149 A at 12.1 V).
The size is its biggest advantage. Mounting it on the hitch using an adapter, we are able to left the hitch receiver usable (or, alternatively, you could probably just glue to the left reflective bumper light, only fixing the angle).
It is not so widely available, though possible to buy on Ebay, as well as for example Interlink - Osvetlenie, alternátory a štartéry and Oświetlenie LED do pojazdów, lampy - Sklep online
This is the 11FM fog light sitting on the hitch using a 3D printed adapter designed for it (by my son), and the adapter itself:

The adapter model - "Hitch receiver 11FM fog light mount for Ford Escape" - can be downloaded from here: Printables
(for the interconnectors along the way I used "2 pin superseal" connectors).
This is the rear fog light after routing all the cables, as powered from the BCM:

I still need to do some finishing touches, like securing the wires and glueing the adapter to the hitch receiver.
Anyway, this is how it looks like, and what I wanted to share.