I said autopilot when I meant FSD, but yes I see on the manual it defines TACC under AP.
I'm thankful we didn't drive the Y on our last trip just a couple months prior on the same route b/c we had snow and ice. That'd be a quick and shitty way to end it all
I feel like a lab rat seeing that TACC is listed as a beta feature in the manual after experiencing this. If that's the case there should be a warning you have to accept when enabling TACC that says Vehicle can unexpectedly and aggressively enable the brakes whether or not there is a real immediate danger and I can and will send your luggage, your snacks, drinks, and any pets hurling towards the front seats
They need to add an option to set the cruise mode when not using any other auto driving features since this problem has been ongoing for many years already