P0003899-AD Cruise Control Radar Sensor Precision Detection Replacement

P0003899-AD Cruise control radar sensor uses high-density engineering plastic housing and precise welded circuitry; accelerated aging tests confirm resistance to long-term vibration and temperature changes. The sensor transmits/receives millimeter waves to monitor distance and speed of the vehicle ahead, providing stable signals for adaptive cruise control. Installation requires removing front bumper and calibrating angle; professional technician recommended to avoid signal deviation. Compatible with most vehicles equipped with the system (verify original part number).