On a bright sunny day, the Hyundai Forward Attention Warning (FAW) SHUT OFF my adaptive cruise control while doing 70 mph, indicating that I was not focused on the road. I was looking straight ahead at the road the whole time. I later determined that the system was reacting to glare on my glasses (not sunglasses, no tint whatsoever, just glass). This led to a very dangerous condition because I was fighting with the car to determine what had happened (at 70 miles per hour), not focused on the road as I just had been prior. The system is checked as OFF in setup (as described in the manual) but clearly that was not the case. The driver CAN NOT shut the system like the manual says. I actually love the car, EXCEPT for that ‘feature’. This subsystem should never have been permitted into a production vehicle and, had I known, I would never have purchased. It’s that big of a problem. The system appears to be very dependent upon ambient light because I never have this issue when it’s cloudy, raining, or at dawn or dusk. I have complained at 2 Hyundai dealerships here in the Chicago area, to a total of 4 Hyundai personnel, even sent a video my daughter recorded of me driving and exhibiting the issue. In 3 of the 4 cases, they replied the ‘system was performing as designed’. That appears to be their mantra. The one service person replied that they had never heard that before. I guess they don’t ever check Reddit or write down my many complaints. I think it’s clear Hyundai, as a service organization does not intend to do anything about this and, perhaps worse, the company at large has no intention of doing anything as this same subsystem is part of an extensive line of their 2025 models as well.