DSG transmission 4×4 Audi Q3 2.0Tfsi year of manufacture 2020 code RLU with 5,395km

Transmission Type: 7-Speed Dual-Clutch (DQ381 / 0GC)

Mileage: 5,395 km (Delivery Mileage / Grade A+)

Year of Manufacture: 2020

The RLU code identifies the modern 7-speed S-tronic (DSG) transmission used in the second-generation Audi Q3 (Type F3). This is the DQ381 variant (0GC), which was developed as a high-efficiency successor to the older DQ500. It is specifically engineered for the $2.0\text{ TFSI}$ (45 TFSI) engine, balancing the 370 Nm of torque with improved fuel economy and smoother low-speed shifting.

Technical Specifications

• Transmission Family: DQ381 (Generation 2).

• Gearbox Architecture: 7-Speed transverse dual-clutch with wet clutch packs.

• Torque Capacity: Rated for up to $420\text{ Nm}$, providing a robust safety margin for the 2.0L turbo engine.

• AWD System: Integrated Quattro (Haldex-based) output for the rear-drive shaft.

• Lubrication: Features an electric oil pump (in addition to the mechanical one) to support start-stop functions and coasting modes.

Key Performance Features

• Ultra-Low Mileage: At 5,395 km, the internal clutch friction material and the mechatronic solenoids are in virtually new condition.

• Reduced Friction: The DQ381 uses low-friction bearings and seals, contributing to lower $CO_2$ emissions compared to the older 6-speed or 7-speed units.

• Shift Logic: The RLU code is mapped for the F3 chassis’ weight and aerodynamics, offering “predictive” shifting that adjusts based on the Audi Drive Select mode (Efficiency, Comfort, or Dynamic).

Professional Installation & Technical Notes

Despite the nearly new condition, the 2020 electronics architecture (MQB Evo) requires specific integration steps:

1. Component Protection (Anti-Theft): The Transmission Control Unit (TCU) is electronically married to the original vehicle’s VIN. Upon installation, the unit will be “locked” (restricting gears or power) until Component Protection is cleared using Audi ODIS via an authorized online connection.

2. Fluid Requirements: The DQ381 uses a specific high-efficiency dual-clutch fluid (G 055 529 A2).

   • Note: Even with low mileage, check the fluid level after installation, as some may have been lost during the removal of the oil cooler lines.

3. Basic Settings & Calibration: After the software handshake, a “Basic Setting” of the dual-clutch and shift actuators is required. This synchronizes the clutch “kiss points” with your specific engine’s idle characteristics.

4. Haldex Coupling: Ensure the transfer case section is properly mated to the front right driveshaft and the longitudinal prop-shaft. Inspect the O-ring on the transfer case flange (02Q 409 189) to prevent gear oil leaks.