Transmission Code: TNQ Model Family: ZF 8HP95 (AL952-8Q) Mileage: 51 km (Delivery Mileage / Virtually New) Year of Manufacture: 2022

The TNQ is the heavy-duty 8-speed automatic transmission specifically engineered for the high-performance Audi RS6 Avant and RS7 Sportback (C8/4K). This is the “high-torque” variant of the ZF 8HP family (the 8HP95), designed to manage the massive $800\text{ Nm}$ ($590\text{ lb-ft}$) produced by the $4.0\text{L}$ Twin-Turbo V8.

Technical Specifications

• Gearbox Type: 8-Speed Tiptronic (Torque Converter).

• Torque Rating: Rated for up to $1,000\text{ Nm}$, allowing for significant engine tuning headroom.

• Drive System: Permanent Quattro All-Wheel Drive with integrated self-locking center differential.

• Compatibility: 2019–Present (C8 Chassis).

• Engine Pairing: $4.0\text{ TFSI}$ V8 (DJPB / DYGA / EA825).

Key Performance Features

• 51 km Condition: This unit is essentially “factory-fresh.” It likely originated from a delivery-mileage vehicle, meaning the internal friction plates and solenoids have zero wear.

• Hybrid Integration: The TNQ code is designed for the 48V Mild Hybrid (MHEV) system. It features an electric oil pump that maintains hydraulic pressure when the engine is in “coasting” mode or active start-stop, ensuring an instant transition back to drive.

• RS-Specific Calibration: Features ultra-aggressive shift mapping in “RS1” and “RS2” modes, with faster downshift blips and “AMAX” shifting for $0\text{–}100\text{ km/h}$ sprints in $3.6\text{ seconds}$.

• Quattro Center Differential: The 8HP95 housing contains the mechanical center differential, which provides a default $40\text{:60}$ torque split but can send up to 85\text{%} to the rear axle.

Professional Installation & Technical Protocols

Given the sophisticated electronics of the 2022 C8 platform, the following steps are mandatory:

1. Component Protection (Anti-Theft): The Transmission Control Unit (TCU) is hard-coded to the original vehicle’s VIN. Upon installation, the gearbox will remain in a “locked” state. You must use Audi ODIS Online to perform the “Component Protection” removal and authorize the gearbox for the new vehicle.

2. Fluid Requirements: Even with only $51\text{ km}$, ensure the unit is topped up with Audi G 060 162 A2 (ZF Lifeguard 8) fluid. Check all external cooling lines for debris from the previous unit.

3. Basic Settings & Adaptation: After the software handshake, a “Clutch Adaptation” must be performed. This allows the mechatronic unit to calibrate the solenoid pressures to the specific idle torque of your engine.

4. Hardware: The mounting bolts are aluminum stretch bolts. Do not reuse old bolts. Use new hardware and torque to the Audi-specified sequence to prevent transmission casing vibration.

Inventory Note: This “TNQ” code is a direct replacement for other C8 RS6/RS7 codes like SHT, but software updates via ODIS may be required to ensure the most recent shift logic is applied.