Pre-programmed at the factory with exact OE protocol, so it's ready to be installed and OE-relearned out of the box. Designed and manufactured to meet or exceed OE performance in compliance with all SAE2657 specifications. Undergoes extensive testing-including operational temperature, thermal shock, extreme temperature, humidity, frost, proof pressure, rapid deflation, contamination, salt fog, drop, centrifugal force vehicle speed, mechanical vibration tests-to ensure durab. Validated at independent lab during 168-hour on-vehicle live test. Military-grade lithium battery ensures maximum battery life and sensor performance.