I don't know what you guys are talking about. I have a 2018 Raptor with 802A and Tech. I do have ACC with Stop n Go. If traffic comes to a complete stop in front of you...truck will come to a complete stop. If traffic remains stopped for 3 seconds or more...it flashes orange and turns ACC off. You will have to press Resume for ACC to kick back in.
Our trucks (2018 with Tech Pkg -- where it is listed as Adaptive Cruise Control w/Collision Mitigation) work exactly as this Ford ACC Stop n Go video describes:
https://owner.ford.com/how-tos/vehi...and-go.html?year=2017&model=Fusion&sync=sync3
when driving cross country on I-70 it was a welcome addition every time I hit a construction zone...and only occasionally does it beep and turn off for too long of a stop...so you do have to pay attention, it ain't driving for you.
the inside rear view mirror in my truck is a Gentex product (a version of GNTX-939). Part number is hu5a-17e678-hd. This is not to say that this is what you need to implement stop-n-go ACC on a 2017...it's just letting you know what is on a 2018 with 802A and Tech.
and I don't think Ford is using LiDAR for this tech to work. Just radar ACC with maybe some camera assist.
and here is what the mirror looks like through the glass and the steering wheel controls:
My 2017 has an identical camera in the mirror and buttons on the steering wheel as you do in your 2018. Makes me suspect your stop-and-go capability. Take a video and share it with the rest of us so we can finally put this to bed. But be careful because another member tried to do the same thing in his 2018 and had to quickly slam on the brakes so he didn't crash into the stopped car in front of him. I tried to find the video, but I don't remember which thread it was in.