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Service bulletins for the 2018 Audi A3

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
A4820912053869_42020-11-05. Service bulletin. STEERING:STEERING WHEEL /HANDLE BAR:HAND HEATER/COOLER. This bulletin contains repair instructions for when DTC B145504 with symptom code 7340800.
A9120232060681_12020-11-05. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains instructions to update eligible cars from Google Earth to the new service provided by HERE.
A6620672060333_22020-11-05. Service bulletin. EQUIPMENT; STRUCTURE:BODY. This bulletin contains instructions for when the black optic trim is discolored.
A1720112060750_12020-11-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; EQUIPMENT. This bulletin contains instructions for using the UV additive to find engine oil leaks.
A0020422045316_52020-11-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:ENGINE. This bulletin contains information for diagnosing the Start/Stop system.
21AUTIRECHAINS2020-10-06. Service bulletin. TIRES; EQUIPMENT; WHEELS. Added new graphic to reflect where to find MY 21 information
A9120142060675_12020-10-06. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; EQUIPMENT:ELECTRICAL. This bulletin contains instructions for addressing the issue when the parking assist will intermittently alert the customer to an obstruction and the sensors look 'pushed in'.
A9120132042506_12020-10-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. This technical service bulletin explains how to determine the status of activation keys (that affect the function of Audi drive select, cruise control, navigation, Bluetooth, smartphone interface and voice recognition), and how to update them.
A9120112037809_72020-10-06. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This informational bulletin contains instructions about updating the navigation map.
A9120092060568_12020-10-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. This bulletin contains a software update that addresses mutiple concerns (CarPlay display blank, Andriod Auto screen not filled, MMI reboots, Subwoofer setting missing, etc.).
A9020652032113_42020-09-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM. This information bulletin contains a background on the outside air temperature reading.
A3020292060560_12020-09-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CLUTCHES/BANDS. This bulletin contains instructions for when the clutch is slipping, there is a gearbox malfunction message, and the vehicle shudders on odd number digits (several DTCs could be stored as well).
A0120832060429_12020-09-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This bulletin contains instructions for when there may be a noise from the exhaust flap or there are DTCs sporadically stored in the ECM.
A3720022060146_22020-09-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; VEHICLE SPEED CONTROL. This bulletin contains a software update that addresses a brief but sudden increase in engine speed without DTCs or leaks.
A9120952055591_32020-09-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update for when the MMI screens go blank and the system reboots, it may have stored DTC U10CF00 and/or B13B901.
A9120942045106_62020-09-03. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This bulletin provides instructions on how to properly replace a coaxial connection if it is damaged.
2010-2021EngOil2020-09-03. Service bulletin. ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. New document
Audi Part Labels2020-09-03. Service bulletin. EQUIPMENT. Recall Reminder Part Labels
A9320322049384_32020-09-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for replacing a HV battery.
A9120902060346_12020-09-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for creating a PSS record when the satellite map setting is lost.
A9020632054351_42020-09-03. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin contains instructions for submitting a PSS when the instrument cluster map display is blank after start-up or following TSB 2052820.
A6620662060333_12020-09-03. Service bulletin. STRUCTURE. This bulletin contains instructions for when the black optic trim is discolored.
A9120892047576_42020-08-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This informational bulletin contains software instructions for vehicles with MIB2 with Navigation plus.
A4020132059474_22020-08-06. Service bulletin. SUSPENSION:FRONT:SHOCK ABSORBER; EQUIPMENT. This bulletin contains instructions for correcting buffer stop noise (rumbling or squeaking from the front end).
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.

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