Please Kindly Note:The package does not include the charger and battery.Packing List:1 x EL-50448 ToolHow to use EL 50448 TPMS Activation Tool Step 1- Enter leaning mode Set the gearshift lever to 'P' Put the ignition switch to “ON” Enter the interface of tire pressure display by DIC DIC shows 'Press Set / Ctrl to re-learn' Press “Set / Ctrl” The turn signal is lighted for 3 seconds and the horn beep sound twice to enter the learning mode Step 2- Read tire pressure sensor information Start from the front-left wheel, Make the J-46079 or Diagnostic Tool EL-50448 antenna up against the valve core position & close to the rim of the tire sidewall El-50448 tire pressure tool starts by the start switch Successful to read the tire pressure sensor information when the horn bleeps once Step 3- Same method to read other tire pressure information Follow the instuction above to read tire pussure of the front-right, rear-right, rear-left wheels. Turn signals is lighted for 3 seconds and the horn bleeps twice when the learning is complete. For certain vehicles equipped with a Tire Pressure Monitoring (TPM) system, a 'Sensor Re-Learn Procedure' must be performed after tire rotations, Remote Control Door Lock Receiver Module replacement or Tire Pressure Sensor replacement. This re-learn procedure can be performed by using special tool 50448