I have a safety concern. i bought a new car a couple of weeks before this incident; this is what i experienced with the pcs system. it went off with warning buzzer, retracting the seat belts. to my surprise, the frontal car was more than 120 to 150 feet away!; i believe i was driving at about 50-55 mph. since this is my first experience with the pcs system, i am not sure if this was normal or whether i should bring the car in for inspection. i took the car to the dealer; they gave me a toyota case no. 152660366 ; mechanic said he performed health check on the vehicle and passed. i have not heard from either the dealer nor the manufacturer since then. please advice. additional info: vehicle in motion about 50 mph, city street driving, straight broad