I was involved in a rear end collision where I was at fault. I suspect the ADAS in my 2024 F-150 malfunctioned because it did not prevent the collision. I impacted the rear of a minivan at approximately 20 mph. The ADAS did not take evasive action. Previously I have had nuisance activations of the visual and aural warnings for the pre-collision system, followed by a warning message that radar guided cruise control was not available.