Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
I said I was going to send an update and didn't get to it until this last weekend, so here is my experience in case it helps anyone: Tutorial from my Sync 4a did require me to install a sticker on the trailer. I entered some basic dimensions it wanted about the trailer itself first - I believe this was to be able to enable blind spot monitoring. Blind spot will disable, (along with cross traffic alert), if you skip this. Once I got the sticker on and it found it, it needed me to drive through a series of straight, left, right, straight sessions. All of these need to be completed at 2-9 mph. I thought I could get away with it in my neighborhood but no dice. A big empty parking lot is the way to go. I think flat might also be best. I had times it told me to go straight, but I had to put slight pressure on the steering wheel to actually go straight, so am unsure whether I did my calibration correctly.It's flustering to hear how many people are having issues, and how the tutorials/ videos are inconsistent. Multiple 2021 Ford F150 tutorials claim no more stickers and installing a module (my word - may be incorrect terminology) instead. My 2022 Expedition definitely has stickers in the packet. I am not reading anything that says the sticker is optional in the packet nor owners manual. Weather and time permitting, I will attempt to get my 6x10 Suretrac utility trailer set up this weekend and will plan to report back here my experience. Lots of Notes in owners manual about requirements during calibration including driving 2-9mph, slow steady turns, etc., so maybe those are the tricks for folks who can't get the calibration process to complete. More to come. The manual says nothing about taking trailer measurements as part of backup assist setup beyond measuring where the sticker goes, but BLIS section does talk about entering trailer measurements. I'll see what I can poke through in the menus. This is one of those times I hate that a paper owners manual isn't available - hard to read instructions for menu steps if you're reading the manual from another page of the same infotainment system.