Mercedes 9-speed automatic transmission (9G-Tronic) Mechanical-Electrical Control Unit (TCU)：

Chinese NameMercedes VGS-NAG3 transmission electrical-mechanical control unit

It is the core component of the Mercedes 9G-Tronic (725.0 series) transmission, integrating the electronic control module and the hydraulic valve body. It is responsible for the precise switching of 9 gears, torque distribution, and fault diagnosis, compatible with multiple models such as the Mercedes C-class, E-class, S-class, GLC, and more.

"英文名称"的英文翻译是 "English name".Mercedes-Benz VGS-NAG3 Transmission Mechatronic Unit