Telematic control unit

A Telematic Control Unit (TCU) is a device that connects to a vehicle and helps it communicate with other devices, like your smartphone and a website. It sends and receives information about the vehicle's speed, location, direction, and other data. This allows you to control the vehicle from your smartphone or from a computer from far away. The TCU can also send messages to your phone, like when you need to refuel or when something is wrong with the vehicle.