Alientech 144300K267 KESSv2 – VAG DSG DQ250-DQ250MQB 20 pin Connector

This is a 20‑pin DSG/Transmission Control Module (TCM) interface cable/connector designed specifically for certain VAG group DSG gearboxes — notably the DQ250 and DQ250‑MQB variants. It’s used to establish a direct connection between the vehicle’s TCM and Alientech ECU tuning tools such as KESSv2/KESS3.

Primary purpose:
The connector allows your tuning or diagnostic tool to communicate directly with the Transmission Control Unit for tasks like:

• Reading and writing TCM firmware and maps

• Diagnostics and error code access on the DSG transmission

• Bench programming of the transmission module

  Compatibility:
  Designed for vehicles in the Volkswagen Auto Group (VAG) that use DQ250 / DQ250MQB dual‑clutch gearboxes, such as many VW Golf, Audi A3, Seat Leon and Skoda models with DSG transmissions in that series.