omar302

Was the drain clogged up or dirty? Being so hidden up there, one might think it is far from any road debris that could get in.

OEM is only available as a complete assembly. If you want cheaper, non-OEM is available for much cheaper. Just search on eBay and you'll many brands available. I don't have experience with them to give any recommendations. As for diagnosis, I had two vehicles with leaking evaporators, in both cases there was a smell inside the car everytime I turned the AC on. Can't describe it, but it was apparent for me.

Did you try to unplug the connector from the Gateway and try to plug it into the other end of the T-Harness, the side not shown in your picture? Even through the plugs look different from the outside, the the one on the T-Harness being straight and the vehicle's sideways (or L-shaped), from online photos, the actual connectors look to be the same and probably should plug in.

The gateway location apparently was moved. Check page 17 in the installation manual here: https://www.fordservicecontent.com/Ford_Content/Catalog/accessory_files/2021_RMST_Common_I_sheet_11_5_20_D1_002.pdf

Newer cars have so much electrics that they become very sensitive to any issues with the batteries. Also, they start quite fast compared to older ones that in many cases you might not notice a "slow start" before it reaches a state of completely not cranking. This is not related to the battery being sealed (maintenance free). Also, what was the battery brand you installed before? Motorcraft batteries would have 3 years warranty, so you might still be covered, even if you had done the installation yourself.

You still have to worry about access your vehicle with the emergency key inside the lost/stolen fob.

You can try the procedure to add it. If it is compatible it'll work. The old key doesn't have to be unmatched/erased from the old car.

As the battery was changed two years ago I would think it is most probably the battery failed and you need a new one. Check what is the warranty on your battery and if it is still valid take it to the shop for checking and replacement if it is bad.

18 lb.ft That's what the 2015 Service Manual indicates (attached). I wouldn't expect it to have changed for later models. 2015 Ford Edge 2.7EB Oil & Filter Change x.PDF

They are two different fob styles. 2015/2016 used the older style (with 2x 2025 batteries) while 2017+ started using the newer type with a single 2450 battery. My 2016 came with the older type and I added fob of the newer style. You can see them side by side In this post I made at the time.

FYI, in case you didn't already know, the ATC is sold separately, in case the differential is good and you don't want to replace the whole assembly.

As far as I know, A/C systems on Ford vehicles come with the dye already inside the system from the factory. So leaks can be detected faster. This is from the 2015 Service Manual, but I would expect it to still be the same. Fluorescent Dye Leak Detection.pdf

This probably indicates a bad (Active Torque Coupling (ATC) solenoid. This is the front part of the RDU and controls how much the rear axle connects with the front.

Hi, Did you eventually change the rears? If so, how did you find the old ones?

My 2016 already had the Sock intake. Hence I only purchased the exhaust kit and installed several years ago. Just to be clear, the back seat is much better with the fix, it does not heat up after some time, and my back does not heat up compared with ot off, but it is no where as effective as the seat bottom.