Application / Fitment : OEM Number :EB3T1A180AA, EB3T1A180AB, EB3T1A180AC, EB3T1A180BB, EB3T1A180BC, EB3Z1A189A -------------------------------------------------------------------- Please Confirm The Parts Number Before Order , Thanks ! --------------------------------------------------------------------For FORD FOCUS 2016-2018 The principle of tire preure sensor:The tire preure sensor has its own unique ID. When you buy a new sensor, you need to change the old sensor ID in the car system to the new ID through obd matching, so that the sensor can communicate with the car. (If the car comes with a learning function, the new sensor will activate itself.) FAQ1: What is OME number?Each car production plant in order to facilitate the management of spare parts, for each component of each model are used to distinguish between different claification numbers, this number is the OEM number, also called OE number.2: Why should the owner confirm the part number?Customer service can check the part number through VIN and model, but it may be inaccurate. In order to prevent the buyer from buying the wrong car parts and causing loes, please check the part number or provide the old sensor photos.3:What is the difference between good quality and poor quality?Good quality and bad quality difference is that the chip and battery, chip brand is the best Freescale, the best battery brand is Panasonic. Our factory are based on Freescale's chip and Panasonic batteries, high quality and stability.4: How is the sensor activated?Activate by OBD or self-learning method (Depends on the car's own functions).