8-Speed Automatic Transmission Assembly for 2013-2017 Audi Q5

A quick look at your own vehicle makes sure the right transmission shows up:

• Verify the transmission code 'NTB' on the vehicle identification sticker in the maintenance booklet or spare tire well.
• Verify the transmission type plate on the bottom of the transmission oil pan displays '8HP-55' (or '8HP45') and the code 'NTB'.
• Confirm the vehicle is equipped with a 2.0L Turbocharged 4-cylinder engine and is a non-hybrid model with quattro AWD.

What the install really takes — plan and budget with confidence:

Special tools this job needs:

• Audi-compatible diagnostic scan tool (VCDS, OBDeleven, or ODIS)
• Metric Triple Square (XZN) socket set (specifically M14)
• Torx bit set (T40)
• Automatic transmission fluid transfer pump with hook-style fill adapter (VAS6542)
• Engine support bar
• Torque wrenches

Budget for these consumables at install:

• ZF Lifeguard 8 fluid (Audi Spec G 060 162 A2) - 6 to 9 liters
• Integrated plastic transmission oil pan, filter, gasket, and new pan bolts
• Torque converter seal (front pump seal)
• Axle seals
• High-pressure transmission cooler line flush
• Subframe stretch bolts (2x M14 Triple Square WHT005372, 4x 18mm Hex N91151101)
• One-time-use driveshaft, crossmember, and torque converter bolts

What your vehicle’s computers will need after the swap:

What’s involved: Component Protection (Immobilizer Re-marriage) and TCM Adaptive Relearn

The TCM inside this transmission is part of Audi's 5th Generation Immobilizer system. If installed as-is, the vehicle will start but lock into Component Protection mode, preventing shifting out of Park. Unlocking requires an authorized Audi dealer or specialist with an active ODIS subscription and GeKo online access. Alternatively, installers can swap the original Mechatronic unit into the replacement transmission to bypass programming. A TCM adaptive value relearn is also mandatory.

Pro tips for a smooth first start-up — hand them to whoever does the install:

• Torque Converter Seating: Must be spun and pushed until it fully engages with the transmission's front pump, feeling three distinct clicks. If not fully seated, tightening the bellhousing bolts will crack the front pump, destroying the unit.
• Fluid Fill Temperature Window: Fluid level must be finalized with the vehicle level, engine idling, and fluid temperature strictly between 30°C and 45°C. Thermal expansion outside this window causes underfilling or overfilling.
• Aluminum Pan Bolts: Replacement bolts for the plastic oil pan are aluminum and have an extremely low torque spec (4 Nm plus 45 degrees); they snap easily if over-tightened.
• Reset Adaptations: Learned shift pressure values must be reset using a scan tool after installation to prevent poor shift quality and damage.
• Flush the Cooler: Debris from the old transmission must be flushed from the cooler and lines to prevent immediate contamination and failure of the replacement unit.

Easy to get right once you know them:

• Confusing S-Tronic (DSG) with Tiptronic (ZF8): Purchasing dual-clutch DSG fluid or trying to install a DSG mechatronic unit.
• Assuming Plug-and-Play Install: Skipping the mandatory Audi Component Protection programming step and assuming the unit is defective when it won't shift out of Park.
• Reusing Subframe Bolts: Reusing structural subframe X-brace stretch bolts, which can snap under load.
• Ignoring the Transmission Code: Ordering a transmission without matching the three-letter code (NTB).
• Using Incorrect Fluid: Using generic multi-vehicle ATF instead of ZF Lifeguard 8 or equivalent.
• Improper Torque Converter Installation: Forcing the transmission onto the engine without the converter being fully seated.
• Not Flushing the Cooler: Failing to flush the cooler system, which is a primary cause of repeat failures and voids the warranty.

Not issues with the units on this page — the manufacturer documented these for every transmission of this family, wherever you buy one. Handy for your installer: