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Welcome. The only suggestion I have is to use an auto-switching type of adapter instead of the elm327 manual switch adaptor. I recommend this: OBDLink MX+ OBD2 Bluetooth Scanner

Welcome. What's the mileage on your Edge and what type of issues have you encountered?

@STBEAST I estimate that you have two or more years left on your original battery. My recommendation is to get a battery health tester or take it to a place like Autozone at least once a year to test the battery and that will give you advanced notice of when replacement is due before you experience a slow crank. Then search the forum for the option to upsize the battery and reset the BMS when a new battery is installed.

@marekrbk thanks for you prompt reply. I got out my black&white hard copy and its virtually identical and can most certainly be used for the US version - I'll definitely be using this colour copy whenever I have the need - thanks. .

Welcome and thank you for that. Do you think it's much the same as the US 2017? If not, is there any chance you could post the wiring schematics for the US 2017?

Welcome. Try a search on one of these websites using your VIN and see what that specifies. https://www.ford.com/parts https://www.fordpartsgiant.com/

You could look at the suggestions in the below thread, but it looks like you'll need a new APIM.

@Wubster100 I think you missed that in the wall of text.

This video shows the location:

My 2017 Edge Factory and Extended warranty ran out some time back, so don't expect there'd be any warranty cover remaining on a 2016 model. Some used car sales places offer some warranty but its usually very limited cover and very short duration. The vehicle under discussion may have had some 3rd party service and repairs done to the entertainment system. Not enough information offered by @CassieB1990 to offer any reliable advice.

Who did you purchase the vehicle from?

Thanks for updating. What do you think caused the wiring to deteriorate like that?

My advice would be to use a reliable scanner like Forscan as a first step in the diagnostics, and monitor the O2 and fuel trim data.

Welcome. The smell of rotten eggs comes from the CAT which only happens when un-burnt fuel get into the CAT which is a sign of an ignition or injector issue. If its been going on for a while you may need new CAT's by now but address the fuel issue first or the new CAT's will be toast in a short time. The fact that its getting in to the cabin is a secondary issue. Have you used a reliable scanner such as Forscan to check for codes?

Is this one of the models where Ford did away with the aesthetic / acoustic cover?