Easy to Use:1. Enter the TPMS system of main menu and select your car brand and year;2. Please make sure to set the car into the learning mode (enter the 'Relearn Procedure' after selecting the vehicles to see how to get into learning mode);3. Select the 'Scan Single Sensor' and place the TPS10 on the valve stem for tire sidewall, press the OK key to relearn;4. Tire relearn in the following order: Front Left - Front Right - Rear Left - Rear Right. When you need this tire relearn tool?1. New TPMS sensors installed, letting air out or adding air in to the tire couldn't make the system recognize new sensors.2. Do tire rotation, didn't have a quick and easy way to let ECU relearn new tire information.3.When tire pressure indicator light ON, after the maintenance performed, the tire pressure needs to be reset to turn off the TPMS light.4.Exchanging the winter tires or Summer tires. Low tire pressure or leakage /replacement or installation of tire pressure monitoring equipment / tire replacement, sensor damage, etc. After those problems solved, TPMS needs to be reset. Name:Tire Pressure Reset Monitor Type:Automotive computer tester Colour:Blue Material:Plastic + Electronic Components Package Contents: 1 x Tire Pressure Reset Monitor 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.