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Service bulletins for the 2018 Audi TT

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

532 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

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Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
TSB_2074808_42026-06-04. Service bulletin. POWER TRAIN. The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the energy content, which is due to factors. Revised header. Added Model years
TSB_2074764_22026-02-06. Service bulletin. POWER TRAIN. This bulletin provides information when there are whining noises during deceleration in overrun between 70-50 mph.
TSB_2074808_32026-01-07. Service bulletin. POWER TRAIN. This bulletin provides additoinal information to assist in determining the energy content of lithium-ion high-voltage batteries.
TSB_2060560_42025-08-05. Service bulletin. POWER TRAIN. This bulletin providesi nformation when various DTCs are stored; high maximum temperature recorded for clutch K1.
A0124442075010_22024-12-04. Service bulletin. POWER TRAIN. This bulletin provides information when the engine warning lamp lights up in the instrument cluster, and the vehicle has reduced power. DTCs P256300, P056E00, P00AF00.
A3924712074764_12024-10-28. Service bulletin. POWER TRAIN. This bulletin provides service information pertaining to whining noises in the overrun between 110 - 80 mph.
A0124392075010_12024-10-28. Service bulletin. POWER TRAIN. This bulletin provides information when the engine warning lamp lights up in the instrument cluster, and the vehicle has reduced power. DTCs P256300, P056E00, P00AF00.
A3724222074826_12024-09-06. Service bulletin. POWER TRAIN. This bulletin offers information about the basic information needed for technical requests for gaerbox complaints.
A3724222074826_12024-09-06. Service bulletin. POWER TRAIN. This bulletin offers information about the basic information needed for technical requests for gaerbox complaints.
A4824682028220_112024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information when there is visual damage on the steering wheel.
A3724162074802_12024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information for when there is a leak from the end cover of the dual clutch.
A3724142074751_12024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information about replacing the clutch end cover.
A3724132074750_12024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information about replacing the clutch end cover.
A3524522070217_32024-08-06. Service bulletin. POWER TRAIN. This bulletin provides informatoni when the Gearbox warning comes on; various DTCs in the TCM.
A2424612074810_12024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information when there is a fault shown; Engine: start/stop system, and the start system is not working; mileage below 50 km/32 miles.
A3524502070217_22024-06-25. Service bulletin. POWER TRAIN. This bulletin provides infomrion when the Gearbox warnming comes on; DTC memory entries in the TCM.
A3524502070217_22024-06-25. Service bulletin. POWER TRAIN. This bulletin provides infomrion when the Gearbox warnming comes on; DTC memory entries in the TCM.
A3523442070217_12023-10-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This bulletin provides information for when the Gearbox warning comes on, and various DTC memory entries are stored in the TCM.
A3923532043144_92023-05-05. Service bulletin. POWER TRAIN. This technical service bulletin provides repair instructions for the all-wheel drive coupling.
A3422582067365_12022-08-03. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This bulletin describes the appropriate repairs in instances where an oil leak is found near the transmission oil cooler.
A4022332066441_12022-04-05. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. This bulletin describes the procedure to address a clicking noise from the front axle when turning.
A3920332043144_72020-08-06. Service bulletin. POWER TRAIN:DRIVELINE:HYDRAULIC:MOTOR/PUMP; ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE. This technical service bulletin provides repair instructions for the all-wheel drive coupling.
A3720992060148_12020-08-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION: OIL COOLER; POWER TRAIN:MANUAL TRANSMISSION:INTERNAL:GEARS. This informational bulletin states to not replace parts for the beveling groove as it is normal.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.