The contact owns a 2024 Toyota Crown. The contact stated that while driving at 77MPH during rainy weather, the Proactive Driving Assistant (PDA) engaged due to it detecting a vehicle ahead however the system failed and undetected the vehicle while that vehicle was still present. Due to the failure, the vehicle increased in speed however the contact was able to depress the brake pedal and disengage the Proactive Driving Assistant (PDA) in order to avoid a crash. On another most recent occasion; the contact stated while driving at approximately 40MPH, with the cruise control activated the front camera sensor did not detect another vehicle driving ahead and to avoid a collision, the contact swerved to the shoulder of the road. The contact had collided with an unidentified object while attempting to avoid a crash. Partial of the front passenger view mirror and passenger side rear tire rim were damaged. No warning lights had illuminated. No police report was filed. No injuries were sustained. The vehicle was taken to a local dealer where it was diagnosed but no failures were identified. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 4,997.