OTC 3358 Ready Scan Readiness Monitor Tool A drive cycle is required after any emissions related repair Eliminates drive cycle guesswork by notifying any driver or customer with color coded LEDs and built in speaker that the drive cycle has been completed and the vehicle is ready Once the vehicle's OBD II system is ready repair work is confirmed The compact tool works on 1996 and newer OBD II and CAN compliant vehicles Heat-resistant over molding on battery clips and blow-molded case