mblakele
FSD Beta (99)
During my test drive the salesman had me engage TACC on a divided highway with stop lights. Twice as I approached cars stopped at a light the car began to brake and then stopped braking, forcing me to aggressively brake in order to avoid hitting the stopped car in front of me. The salesman's explanation was that it was a new car that hadn't been driven enough yet for the TACC to work properly. He said it typically takes 2 - 3 weeks of normal driving before TACC, auto-steer and self-parking accumulate enough experience to start working properly.
This was on a car with AP1 and 8.0 firmware.
I think your sales rep was repeating a confused idea of calibration of the ultrasonic sensors for autopark. That is supposed to take a little while.
My experience with a new AP(1) car: I took delivery of the car with 11 miles on it. I drove about five miles on surface streets to a limited-access freeway, merged into traffic and engaged AP. It was fine, even when the traffic turned to stop and go in light rain. I monitored AP closely, but I only had to take over when there was merging traffic. That's always a concern with AP(1), because of its limited sensors.
I would not have trusted AP with traffic lights then, and I still wouldn't. AP(1) doesn't support traffic lights, and they create excellent opportunities for mode errors in human drivers.