telematics control unit

In the automotive industry, a telematic control unit (TCU) is an embedded system that connects a vehicle to the internet and serves as a hub for external wireless communications. It enables modern connected vehicle services, including telematics, fleet management, and V2X (Vehicle-to-Everything) communication. The TCU's primary functions are to collect data from the vehicle's internal systems, a process known as telemetry, and to facilitate two-way communication with cloud-based services. While the term typically refers to a factory-installed (OEM) unit, its functionality is also available through third-party aftermarket telematic devices that can be installed in vehicles not originally equipped with an OEM system.

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