VGS NAG3 Transmission Control Unit Genuine for Mercedes

$399.00

Category: Spare Parts Tags: 7G-Tronic, 9G-Tronic, Auto Parts, Car ECU, Gearbox Computer, Genuine Mercedes-Benz, OEM Car Parts, TCM, TCU, Transmission Control Unit, Transmission Module, VGS NAG3, VGS-FDTR, VGS2-FDTR

Description

The Genuine VGS NAG3 Transmission Control Unit (TCU/TCM) is an authentic OEM replacement component engineered specifically for Mercedes-Benz vehicles equipped with 7G-Tronic and 9G-Tronic automatic transmissions. As the central computer for the gearbox, this advanced module monitors and regulates all electronic and hydraulic transmission functions. Designed to meet strict factory standards, it replaces faulty units that commonly cause transmission limp mode, harsh shifting, or failure to engage gears. Built for maximum durability and reliability, this genuine VGS NAG3 unit ensures seamless plug-and-play installation when properly programmed to your vehicle’s VIN via Mercedes-Benz XENTRY software.

Function

Shift Mapping Optimization: Calculates and executes optimal shift points based on real-time data including vehicle speed, engine load, throttle position, and driving style.
Hydraulic Solenoid Control: Precisely regulates electronic solenoids inside the transmission valve body to manage hydraulic pressure for smooth clutch engagement and gear transitions.
Torque Converter Management: Controls the lock-up clutch of the torque converter to balance power delivery, fuel efficiency, and heat reduction.
Adaptive Learning: Continuously learns the wear characteristics of the transmission clutches and adapts shifting parameters to maintain consistent shift quality over the vehicle’s lifespan.
Diagnostics & Fail-Safe Protection: Constantly monitors sensor inputs for irregularities. If a critical fault is detected, it triggers “limp mode” (restricting the vehicle to a specific gear) to prevent catastrophic transmission damage.

Supported Car Models

Mercedes-Benz C-Class (W205): C200, C300, C400, C43 AMG, C63 AMG (2015-Present)
Mercedes-Benz E-Class (W212/W213): E200, E300, E400, E43 AMG, E63 AMG (2013-Present)
Mercedes-Benz S-Class (W222): S300, S400, S500, S63 AMG, S65 AMG (2014-Present)
Mercedes-Benz GLC-Class (X253): GLC250, GLC300, GLC350e, GLC43 AMG (2016-Present)
Mercedes-Benz GLE-Class (W166/C292): GLE350, GLE400, GLE450, GLE63 AMG (2015-Present)

Note: Compatibility is strictly dependent on the specific part number, hardware index, and vehicle’s VIN. This unit requires online SCN coding and initialization via Mercedes-Benz XENTRY/DAS before operation.