Need help with front collision avoidance system

Hoping to get some info and advise if possible. I’m wondering if I should risk paying $250 dealer service fee or not.

I have a lease for 2025 Hyndai Tuscon. From the very beginning the car would put the brake pedal down in slow moving traffic situations when there is no reason for emergency braking.

What would usually happen is I would start gently applying the brake to stop after pulling up to the car in front of me while moving less than 20 miles an hour and all of a sudden the car would just floor the brake pedal and stop abruptly, no reason or need for this. A few times it got close to being rear ended but luckily did not. The delayed settings does not make any difference.

Needless to say, I can’t drive the car like this so I turned front driver assist off. Especially after complaining to the dealer and getting “that’s how the car is” answer.

But after the last update or for some other reason the feature turned back on without my knowledge. Sure enough caught me by surprise in bumper to bumper traffic with 2 unnecessary hard stops in a row. I was surprised to see frontal collision warning turned back on.

Called hyndai customer service they do not diagnose or assist with anything vehicle issue related, they told me the dealer service center needs to assist with this. I called a different service center but they will charge $250 if they can’t replicate an issue.

My concern is A — is this how the system functions? And B— I don’t trust the dealer and if they choose to just dismiss the issue like the first service center did and collect $250 what path do I have to getting this resolved?