Forward Collision Warning on Tuscon

I became a proud owner of Hyundai Tuscan Hybrid 2025 SEL. Driving yesterday, I came pretty close to another vehicle in front however there was no FC warning or emergency braking. I checked the driver assist settings and it is turned on.

This morning I tried to move the car closer to my garage door to test FC out but no warnings or alert. Am I missing something?

Thanks for help here.