THE SYSTEM HAS SENSORS INSIDE THE FACTORY WHEELS. YOU MUST REMOVE THOSE SENSORS AND REPLACE THEM ONTO THE NEW WHEELS. THEN MAKE SURE THE SENSORS ARE IN THE EXACT SAME LOCATION THEY WERE ORIGANALY. THE CORRECT AIR PRESSURE SHOULD BE ON THE SIDE OF THE DRIVERS SIDE DOOR. I THINK THE FRONT IS 44psi AND THE REAR IS 39psi. THEN YOU MUST REPROGRAM THE SENSORS THRU THE RADIO. SEE YOUR OWNRES MANUAL. CALLME IF YOU HAVE ANY QUESTIONS 713-526-9454 OSCAR. SOMETIMES THE WHEELS ARE NOT COMPATIBLE FOR SENSORS AND THAT GETS A LITTLE HARD TO DO BUT YOU CAN STILL MAKE IT WORK.