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Service bulletins for the 2012 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.

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

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Bulletins, newest first
A911736 2024323-2018-02-05. Service bulletin. FORWARD COLLISION AVOIDANCE: DYNAMIC BRAKE SUPPORT/BRAKE ASSIST. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.
A191789 2046712-2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap.
Dealer Letter -2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Effective immediately, the work procedure for Service Action 20U3 has been revised to include an owner supplement that must be provided to customers upon completion of this repair. An allocation of supplements was sent to your dealership in early September. If you need additional copies, please see the revised campaign circular for ordering instructions. An updated campaign circular has been posted to ServiceNet and will be visible in ElsaWeb shortly. Please ensure that everyone in your dealership with campaign-related responsibilities has been made aware of this updated information.
Email - 2.0L and2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 2.0L & 3.0L TDI Settlement Updates
SM E-20162018-01-08. Service bulletin. ELECTRICAL SYSTEM. This special notice is to inform dealers to return all engine control modules listed in the document.
A871447 2010146-2017-12-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 87 number 12-27 dated April 24, 2012. There is an unpleasant, musty odor coming from the heating and ventilation system. The odor usually occurs when the vehicle has been sitting unused for five hours or more. The odor usually occurs within 20 to 60 seconds after the vehicle is started. Condensation, which is a normal condition in all A/C systems, can cause a musty odor. If the odor is noticeable in the vehicle when the engine is not turned on, the cause may be mold and mildew in the passenger compartment, and not be related to the A/C system. All other possible sources of the odor must be investigated before this bulletin can be performed.
A741418 2036572-2017-12-14. Service bulletin. SEATS. The panel on the back of the front seat is warped or dented. The headrest on the rear seatback may also be damaged. The damage is caused when the headrest of the rear seat backrest comes in contact with the back of the front seat. This occurs when the rear seat is folded down with the headrests installed, and the front seat is moved back far enough to make contact with the rear seat headrest.
A001459 2029737-2017-12-14. Service bulletin. ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 00 number 12-34 dated June 6, 2012. The process of draining oil through the drain plug is not always tidy. When oil is drained through the drain plug, the oil might spill on components around the oil pan area. If it is not properly cleaned up, this spilled oil could drip after the procedure is complete, causing unnecessary customer complaints.
A011396 2023360-2017-12-05. Service bulletin. ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 01 number 13-79 dated March 20, 2013. MIL on. DTCs are stored in the engine control module (address word 01). Excess rattling (?diesel clatter?) coming from engine. No start or hard starting condition. Contaminated fuel found in fuel system. Rust or metal debris found in fuel system. Contaminated or incorrect fuel can cause performance, drivability, and/or fuel delivery problems. Additional component replacement may be necessary to ensure that no contamination or debris remains after repair. Reasons for fuel contamination can include: water ingress in the fuel station?s holding tanks, errors made in fuel transport, or incorrect fuel has been dispensed into the vehicle.
A001349 2033576-2017-12-05. Service bulletin. ENGINE. Although the correct amount of oil was added to the engine during an oil change service, a check of the oil level shows that the oil level is not okay. When an unapproved aftermarket speed-filling device is used to add oil to the engine, the increased oil flow rate may force oil into the intake manifold or combustion chamber, creating the potential for engine damage.
Campaign Circula2017-12-05. Service bulletin. FUEL SYSTEM, DIESEL. As diesel engine passenger vehicles become more popular, auto manufacturers have seen an increase in the number of misfueling cases where diesel engine vehicles are mistakenly fueled with gasoline. The resulting fuel system contamination can lead to costly repairs that are not covered under warranty. As an additional safeguard to help prevent a gasoline fuel pump nozzle from being used to fuel a TDI® Clean Diesel engine vehicle, dealers will install a misfueling guard in the fuel filler neck of vehicles affected by this action. Additionally, a new fuel filler neck cap will also be installed.
Dealer Letter -2017-12-05. Service bulletin. FUEL SYSTEM, DIESEL. Audi will soon launch Service Action 20U3 (Misfueling Guard) for certain 2010-2012 model year Audi A3 TDI® Clean Diesel engine vehicles. Because some vehicles affected by this upcoming service action will also have the 55H1 (?Diesel Fuel Only? Information) service action open, enclosed please find a supplemental allocation of ?Diesel Fuel Only? kits for your dealership.
Dealer Letter-FA2017-12-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. We would like to inform you of upcoming Service Action 20U3. Please refer to the attached Campaign Data Sheet for additional information.
Accessories Oper2017-12-05. Service bulletin. EQUIPMENT. This is an advance notice for Audi of America employees. This notice contains information for the accessories operations technical bulletin.
A911472 2024323-2017-12-05. Service bulletin. EQUIPMENT. Supersedes Technical Service Bulletin Group 91 number 13-74 dated February 5, 2013. Parking aid sporadically warns of obstacles when none exist. Parking aid is inoperative or provides constant warning. Various parking aid sensor fitting issues. Environmental conditions.
A901451 2021151-2017-12-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 91 number 12-63 dated October 4, 2012. The customer may report flickering of the dash insert lighting, of the A/C control panel lighting, or of the inside light. The condition occurs when the accelerator is pressed while the vehicle is in P or N, or when the vehicle is shifted down when moving downhill. Only vehicles with PR number 8GH may be affected. When high electricity consumers are switched off when the battery is fully charged, the energy generated by the alternator is sometimes too great for the power system to absorb. This may lead to briefly-increased voltage, causing the lights to flicker.
A441456 2022563-2017-12-05. Service bulletin. EQUIPMENT. Supersedes Technical Service Bulletin Group 44 number 14-50 dated May 14, 2014. Customer feels vibration in the seat, vehicle floor, footwell, pedals, or steering wheel. This condition does not lead to any handling concerns or loss of vehicle control. Customer feels the vibration while driving at highway speeds from 55 ? 80 mph (88 ? 128 km/h). This bulletin is not applicable if this vehicle has a Repair Authorization on this topic. If an applicable Repair Authorization is not followed, the claim will not be paid.
A001470 2039206-2017-12-05. Service bulletin. ELECTRICAL SYSTEM. High quality media files (video and sound) are now integrated into technical service bulletins on a case-by-case basis. Media files can now be viewed on any smartphone or tablet. Audi of America has started to host its TSB videos outside of ElsaPro. Doing so provides higher-quality videos, more reliable access to the videos, and the ability to view the videos on different devices.
A911469 2038824-2017-12-05. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES. The following message appears on the MMI display: ?Device or cable type not supported?. The ?Device or cable type not supported? message may be displayed when the wrong AMI cable type is used. See the Service section of this bulletin for an overview of the AMI cables that support iOS devices.
A191453 2039018-2017-12-05. Service bulletin. ENGINE AND ENGINE COOLING. A small amount of dry or crusted coolant is seen on the coolant pump housing. The coolant level warning is not on. A minor coolant leak is possible during the break-in phase of the coolant seal on the coolant pump. The dry coolant marks are normal.
A171453 2038129-2017-12-05. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 17 number 14-50 dated August 15, 2014. A check with the engine oil service dipstick T40178 is necessary, but the adjustment values for the dipstick are not available in the Elsa repair manual. Because of a system change, the adjustment values for the service dipstick T40178 were removed from the repair manual.
A011403 2033223-2017-12-05. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 01 number 13-29 dated September 16, 2013. The engine warning light is on after engine replacement. The engine is not running roughly. However, the engine control module, J623 (address word 01), is storing one or more engine misfire fault codes. The fault codes occur at light load, between 8% and 14% accelerator pedal position. The programmed values for the misfiring recognition are not automatically reset by deleting the memory once.
A011491 2028842-2017-12-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Customer vehicle is fitted with unauthorized ECM tuning. All systems on Audi vehicles are engineered to work together using the factory calibrations, which have been extensively tested and validated before the vehicle is released for sale. The Audi warranty coverage is based on the results of developing the vehicle under the factory calibration. If a vehicle is equipped with unauthorized hardware or software tuning, it can cause stress on vehicle components outside of intended design limits, and can cause damage and additional wear. Subsequently, factory powertrain warranty coverage is reduced or voided.
A641436 2020552-2017-12-05. Service bulletin. VISIBILITY:WINDSHIELD. Windshield is streaked, has a snakeskin appearance, or its surface feels rough. Residue from industrial fallout as well as normal road dirt and grime may accumulate on windshield.
A921409 2038151-2017-12-05. Service bulletin. VISIBILITY:WINDSHIELD. Supersedes Technical Service Bulletin Group 92 number 14-08 dated August 19, 2014. The washer solvent level warning is on in the DIS, but the washer solvent level is correct. There is no functional restriction in the windshield washer system. The sensitivity of the washer solvent level sensor (G33) can be affected by the type, concentration, and the presence of additives in the washer solvent currently in the tank. The operation of the level sensor relies on the composition of the solvent to provide an accurate message on the solvent level. Incorrect concentration and the presence of additives can contaminate the sensor and reduce its sensitivity.

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