Wow… looking at the 2010 AsBuilt data versus modern Fords, there is a lot more data!

Now, someone please tell me if 2015-2018 tail lights will fit 2019-2024

Ford has issued CSB 24B54 Supplement #1 to Dealers, with a revised date for Owner Letter mailing...     ...increases the allowable Labor Time to conduct the Service Procedure...     ...and revises the Service Procedure to improve the programming success rate.   The updated Service Procedure with revised instructions shown in red text, formulated for dealership professional technicians using the Ford Diagnosis and Repair System (FDRS) to perform the software updates, is attached below as a PDF document...   Owners who opt to perform the software updates on their own, will use the Over The Air (OTA) automatic download and installation method.   In Canada, the only Supplement #1 difference is Canadian Owner Letters are expected to be mailed by mid-December 2024.   CSP 24B54 Supplement #1 - Revised Service Procedure.pdf

Thank you both. I doubt I'll dig very far into this. The memory seat 1/2/3 has worked for the most part since we purchased the Edge new in April 2021. The easy exit/entry never worked properly, sometimes putting us right on top of the steering wheel, despite a new DSM, so we just disabled that feature in the settings menu. So seeing the heat/cool is controlled by the DSM is deflating for me. This has been the biggest POS I have ever owned to be honest and I am a pretty loyal Ford guy. This Edge has tested me and more so my wife so we will likely go in a different direction on our next purchase. Sad because we love the damn thing otherwise, just wish it wasn't constantly needing fixed.     Looking thru the PDF documents that HAZ kindly posted, I feel I can eliminate F74 & F77 because they would affect both front seats and passenger is working. Potentially S374 & S376 could be the culprit, but that seems highly unlikely. My best guess is either at one of the connectors like 341B/C or the DSM itself since they also share the ground G303, again a splice in there that seems unlikely to be bad. Snowing today, so it may be months before I can actually unbolt the seat and get a good look. If we even have the Edge that long. 

So I’m finishing up now. I ended up going to the auto parts store and buying two relays. I’m using the wires tapped from the front turn signals to pull the coils on the relays, and then I ran a separate 12v power from the battery to power the signals. It works perfect. I wired two load resistors to the un uses turn/stop wire in the taillights so I don’t get hyper flash. Tapped into the third brake light to get my brake signal for the new lights. Everything works great as long as the relays and resistors hold up. What an absolute nightmare. I would suggest to anyone else to just buy a 2011 + lol

@MDrumm03: The 2010 Workshop Manual indicates enabling/disabling hyperflash is programmable in the Smart Junction Box, via As-Built data in Line 726, with emphasis added...     Module Configuration and Parameter Chart   Module Module Address Requires PMI Reprogram/ Flash Capable Requires Adaptive Learning or Calibration Available Programmable Parameters Smart Junction Box (SJB)   726 Yes Yes Tire Pressure Monitoring System  (TPMS) sensor training Autolock Auto-unlock Daytime Running Lamps (DRL) Global open Perimeter lighting mode Stop lamp outage enable/disable Tire placard pressure   Hopefully, Forscan will allow the change via its menu of modifications, rather than you having to manually edit your Edge's Line 726 As-Built values to disable hyperflash.   Good luck!   Module Configuration - Diagnosis and Testing - 2010 Edge Workshop Manual.pdf

No, there is only 1 module for each seat. The part numbers are from two differing generations of the Edge. Gen 2 2015-2018, and Gen 2.5 2019-2024

Heating/cooling for both front seats is regulated by Driver Side Front Seat Module (DSM) that you have pictured.   Power to the DSM is protected by fuses F74 and F77, located beneath the underside cover of the Battery Junction Box.   From the 2020 Edge Workshop Manual and Wiring Resource, attached below as PDF documents...   Good luck!   Climate Controlled Seats - Power Distribution - Wiring Diagram - 2020 Edge.pdf Climate Controlled Seats, Left Hand - Wiring Diagram - 2020 Edge.pdf Climate Controlled Seats, Right Hand - Wiring Diagram - 2020 Edge.pdf Driver Front Seat Module (DSM) Connectors Loctation Illustration - 2020 Edge.pdf Front Seats - System Operation and Component Description - 2020 Edge Workshop Manual.pdf Driver Front Seat Module (DSM) - Removal and Installation - 2020 Edge Workshop Manual.pdf Battery Junction Box (BJB) - Top View - 2020 Edge.pdf Battery Junction Box (BJB) - Bottom View - 2020 Edge.pdf Battery Junction Box (BJB) - Fuse-Circuits Listing #1 - 2020 Edge.pdf Battery Junction Box (BJB) - Fuse-Circuits Listing #2 - 2020 Edge.pdf

No, I didn't upgrade the battery just went with the recommended one from the Interstate website for my 2018 Edge 3.5L.   Thanks. Just wanted to be sure.