Do you know anyone else that has a newer Ford/Mercury vehicle with remote start near you that May be experiencing similar occurrences?
Unfortunately no, I don't know anyone nearby that I could query about a similar problem.
If It was me, I would reach out to the dealership and see if they can contact someone with Ford/Mercury engineer team and possibly get you an answer what might be causing the issue
That is a goal of mine too as I try to figure this out more. I have my doubts that any technician at the local Ford/Lincoln dealership would have the knowledge or be equipped to troubleshoot this particular problem. But I would hope that they would have a conduit to an engineer at the company that could help.
what I'd suspect is 315MHz for your key fob
I wondered about this and what frequency they operated on. The public safety band and the cellular bands are very close to one another in the 700 and 800 MHz bands. But if the fobs operate in the 300 MHz band, I wouldn't expect there to be any interference from the tower. That is unless of course they're pushing so much transmit power that they're blowing away the channel spacing something awful to reach way down that far. If that were the case, there would be a lot more than my remote starter being affected I surmise.
So if there is at least a 400 MHz difference between the fob and the tower, then there has to be something else causing it. WiFi is usually in the GHz, 2.5 and 5 typically. Military aircraft operate in some of the 300 MHz band and I know this because I used them in the Marine Corps. But there are no bases or airports anywhere near me so I think that is out.
Have you tried various distances, putting the fob right up to the car in different places (not sure where the receiver might be)? Tried going totally dark at your house, i.e., all WiFi, garage door opener, etc?
I think on my Lincoln the transmitter is on the trunk lid by the rear window. I've walked right up behind the car and stood on either side of it pressing the buttons and nothing.
---
This afternoon was interesting. First, on all of my old cars all I had to do was press the starter button 2 times quickly and that was it. But I knew some people's vehicles required them to press the door lock key once and then press the starter twice to get it going. So I tried that this morning from inside my apartment, just a while after my earlier post here, and that worked! It tried it again at the office, press the lock button then the starter button twice and it worked as well.
Then in the midday I had to go downtown for a meeting and while on the steps of the building I got the iPhone out and used the Lincoln Way app to start the car and it failed. I was nowhere near home or my office, but in the middle of town.
I run similar network setups at home and at work and had the idea this afternoon that perhaps something on my network is blocking the App from communicating with the car over the Internet. So I watched the logs and couldn't find anything. Then I switched off the WiFi on the iPhone and tried using the cellular connection only and the car still failed to start. But I was able to start it with the key fob this time.
When I arrived home I had to stop at the managers office for a minute. While I was walking through the courtyard, in-between all the buildings and not within range of my own WiFi, I tried the Lincoln Way app again and this time it worked. The car is parked in the exact same place as I always park it too. The only difference is that I was outside in the courtyard and not inside my apartment just a couple of hundred feet away.
So I come upstairs and inside the apartment and I'm sitting next to my big patio door window and try to start the car from the app and it fails.
The baffling thing to me is that, as far as I know, using the app, it is going over the Internet and searching for the car on the AT&T network to deliver the signal to start it up. My physical location with the iPhone and being on WiFi or cellular Internet should have no bearing on the success or failure of the starter. Yet, it does by all appearances that I've seen.