Service bulletins for the 2012 Audi S4
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.
795 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| Executive Servic | 2017-10-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID; POWER TRAIN; SERVICE BRAKES, HYDRAULIC:FLUID; ENGINE AND ENGINE COOLING. This document contains a fluid capacity chart as well as a chart that contains the parts and part numbers needed for service. |
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| A911598 2018187- | 2017-10-27. Service bulletin. ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 91 number 14-50 dated July 10, 2014. Customer may report that cracking, grinding, rattling, humming, whining, or similar interference is coming from one or more speakers. Parts of the speakers (such as the brackets, cables, or covers) or parts of the interior fittings (such as door covers, rear shelf, facings, or covers) can vibrate at certain frequencies, causing noises. The radio tuner or other control modules may be affected by electromagnetic interference from aftermarket electronic devices. |
| A911595 2040926- | 2017-10-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. The navigation map update database 8R0051884CJ cannot be activated using Software Version Management. |
| A871564 2010146- | 2017-10-27. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. Supersedes Technical Service Bulletin Group 87 number 15-63 dated May 18, 2015. 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. |
| A461511 2027636- | 2017-10-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. Supersedes Technical Service Bulletin Group 46 number 14-89 dated July 21, 2014. Customer may complain about brake squeak or squeal with light to moderate pedal pressure. If front brake discs or brake pads are close to their wear limit, foreign objects between brake disc and brake pad, such as small stones, grit, rust build-up, or sand, un-ground or corroded friction materials, or metallic deposits from disc material in brake pad exists, then this TSB does not apply. |
| A421524 2026049- | 2017-10-27. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT. Supersedes Technical Service Bulletin Group 42 number 13-17 dated March 18, 2013. Oil is leaking in the area of the Quattro sports rear differential (PR-PDU, PDR, or GH2) side flange or axle shaft inboard flange. Insufficient sealant on the protective cap on the inboard constant velocity joint at the rear differential on vehicles with a sports differential. |
| A171563 2038129- | 2017-10-27. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 17 number 14-53 dated November 7, 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. |
| A011526 2041120- | 2017-10-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). The MIL is on. DTC P042000 and/or P043000 (Catalyst system Bank 1/2, Efficiency below threshold) is stored in the engine control module (ECM), J623 (address word 01). The diagnostic limitations were too narrow. |
| A011524 2040491- | 2017-10-25. Service bulletin. ENGINE AND ENGINE COOLING. The MIL is on. "Coolant System: Fault Turn Off Engine" and the coolant symbol appears in the information panel. DTC P1B1C00 is stored in the ECM. |
| A661546 2030471- | 2017-10-25. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. Supersedes Technical Service Bulletin Group 66 number 13-30 dated June 4, 2013. Customer may report that the license plate attachment screws do not install properly. License plate mounting bracket threaded inserts stripped. |
| A171555 2030197- | 2017-10-25. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 17 number 13-46 dated November 7, 2013. Customer complains of excessive oil consumption. Production solution is Crankcase pressure reduction starting with model year 2013. |
| A011507 2028344- | 2017-10-25. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 01 number 13-69 dated February 14, 2013. Noises and inconsistent engine operation after cold start during the catalyst heating phase. The customer may misinterpret these symptoms as engine misfiring. This bulletin applies only to non-diesel engines. |
| A171559 2030197- | 2017-10-25. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 17 number 15-55 dated February 9, 2015. Customer complains of excessive oil consumption. Crankcase pressure reduction starting with model year 2013. |
| A171558 2038119- | 2017-10-25. Service bulletin. EQUIPMENT:ELECTRICAL. Supersedes Technical Service Bulletin Group 17 number 14-52 dated September 2, 2014. The message "Oil minimum warning, add one quart of oil" appears in the instrument cluster, but the oil level is above the minimum level (when measured with special tool T40178). There are no DTCs related to oil level stored in the ECM memory. The oil level sensor is defective. |
| A151526 2039995- | 2017-10-25. Service bulletin. ENGINE; POWER TRAIN. Rattling noises are heard from the timing chain drive for about 1-3 seconds after the first engine start of the day. The noises are caused by one of the upper chain tensioners. The noises do not lead to damage. Improved chain tensioner. |
| A971548 2013504- | 2017-10-21. Service bulletin. ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 97 number 10-15 dated October 20, 2010. Sporadic fault memory entries are stored in various control modules. Contacts may be widened (over 0.63 mm) if incorrect pins or incorrect methods for current flow tests are used. Either action may cause intermittent electrical connections, which can cause sporadic DTCs to be stored in various control modules. |
| A941567 2027773- | 2017-10-21. Service bulletin. EXTERIOR LIGHTING. Supersedes Technical Service Bulletin Group 94 number 12-96 dated November 1, 2012. Part or all of the daytime running lights do not work on vehicles equipped with LED daytime running lights. For vehicles with halogen daytime running lights, refer to TSB 2017488: 94 Halogen Daytime running lights do not work. In the past, the daytime running light bulbs were a serviceable part. In this application, the LED strip cannot be replaced, and may have an associated control module. This TSB is for servicing information only. |
| A921510 2038151- | 2017-10-21. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. Supersedes Technical Service Bulletin Group 92 number 14-09 dated September 12, 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. |
| A911588 2026390- | 2017-10-21. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. When a phonebook with a large number of contacts is being downloaded, the MMI screen freezes Briefly after the initial Bluetooth connection (shortly after the phone is bonded to the vehicle), after the ignition is switched on (shortly after the phone automatically reconnects with the vehicle), and after the phonebook has downloaded. When the voice recognition system is used, a message appears in the MMI screen stating that the phone book is too large and that the voice recognition system cannot be used. When music is streamed to the MMI system with the Bluetooth A2DP connection, the music intermittently pauses or seems to skip. The condition goes away once the phonebook transfer is completed. The MMI uses a limited portion of the total memory to convert the name and phone number fields of downloaded contacts into a voice command (text to speech). Extensive processing takes place if too many letters are used in the first and last name fields or if numbers or special characters are entered. The remaining memory is dynamically assigned to different applications which can also affect the capacity of the voice command processing. The MMI does not respond until the process is completed or it may freeze if phonebook fields are too large or do not follow typical formatting. In addition, the text-to-speech capacity is exceeded and the voice recognition system is rendered inactive. |
| A911583 2030465- | 2017-10-21. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE. Supersedes Technical Service Bulletin Group 91 number 13-07 dated September 12, 2013. Group "A" complaints: Valid for vehicles with MMI software below version 566. Group "B" complaints: Valid for vehicles with MMI software at or above version 566 but below 715. Group "C" complaints: Valid for vehicles with MMI software at or above version 715 but not including 814. This bulletin only applies to vehicles with MMI3G+ Navigation (PR Number "7T6") and to vehicles with MMI3G+ Navigation, but without Audi Connect (PR Number "7T6" with additional PR code of "PND"). Continual improvements to MMI software provides solutions to issues experienced in the field. |
| A871563 2010146- | 2017-10-21. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 87 number 14-54 dated August 28, 2014. 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. |
| Dealer Letter - | 2017-10-21. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. This document contains general information on the upcoming warranty extension on the high pressure fuel pump. |
| A941565 2012749- | 2017-10-21. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. Supersedes Technical Service Bulletin Group 94 number 12-92 dated October 24, 2012. Condensation is visible on the inside of the headlight, taillight, fog light, side marker light, front turn signal, daytime running lights, or third brake light lens. |
| A911582 2029903- | 2017-10-21. Service bulletin. EQUIPMENT:ELECTRICAL; BACK OVER PREVENTION: CAMERA SYSTEM. Supersedes Technical Service Bulletin Group 91 number 12-42 dated June 20, 2012. The customer complains about the picture quality of rearview backup camera image in the MMI screen. The picture is fuzzy or distorted. The picture looks too bright, too dark, or opaque in certain areas of the image. The colors of the objects in the image are incorrect or slightly off. The guidelines used for parking are fuzzy, distorted, or pixelated when compared with the guidelines displayed on another vehicle?s MMI. |
| A191559 2034439- | 2017-10-21. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY; ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 19 number 13-45 dated September 3, 2013. The coolant warning light is illuminated. Coolant is leaking from the front intercooler radiator because of stone damage to the radiator. When vehicles are driven on gravel roads, there is a greater chance of front-end stone impact damage to the intercooler radiator. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.