A telematics control unit (TCU) is an electronic device that connects a vehicle to the outside world through wireless communication. It manages a vehicle's telematics services, including:
Wireless tracking: A TCU can track a vehicle's location
Diagnostics: A TCU can perform diagnostics on the vehicle
Communication: A TCU can communicate with other vehicles and cloud services Emergency calls: A TCU can send a vehicle's location and status to an emergency center in the event of an accident
Over-the-air (OTA) updates: A TCU can receive updates for maintenance and information
Traffic information: A TCU can receive information about traffic
Stolen vehicle tracking: A TCU can track stolen vehicles
