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Service bulletins for the 2011 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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
A9020452059335_12020-05-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information on noises from the instrument cluster installation area.
A9020442032113_32020-05-07. Service bulletin. ELECTRICAL SYSTEM. This information bulletin contains a background on the outside air temperature reading.
A0019252011732_12019-10-21. Service bulletin. ELECTRICAL SYSTEM. 00 Software Version Management (SVM), operating instructions
19AUUSMaint87192019-09-09. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. ADDITIONAL MAINTENANCE ITEMS: Sparkplugs: Change at 35K miles: Updated all models. Sparkplugs: Change at 55K miles: Updated all models.
A001915 20478122019-04-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin contains instructions for setting up and using the SD creator program.
A011902 20330012019-04-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides instructions on how to clean the secondary air ports if they have too much carbon and cause a restriction.
A011685 2041120-2018-03-13. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This bulletin provides information regarding a software update for DTC P042000 and/or P043000.
A011688 2040403-2018-03-13. Service bulletin. ELECTRICAL SYSTEM. This technical service bulletin instructs the reader to replace either a combi valve or vacuum solenoid valve depending on the circumstances under which DTC P244000 and/or P244200 were stored.
A0115362041120-22018-02-05. Service bulletin. ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 01 number 15-26 dated June 30, 2015. 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). The diagnostic limitations were too narrow.
A351623 2032211-2018-02-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This technical service bulletin provides instructions for diagnosing an issue with the G676 sensor module and replacing it.
A001684 2037949-2018-02-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This technical bulletin provides instructions for an an error message and updating with an SVM code.
A911743 2042097-2018-02-05. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin contains resource information for when the traffic feature is inoperative in the MMI navigation.
A011732 2033001-2018-02-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides instructions on how to clean the secondary air ports if they have too much carbon and cause a restriction.
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.
A451408 2033412-2017-12-14. Service bulletin. STEERING; ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 45 number 13-07 dated September 25, 2013. Steering wheel does not lock. Various warning lights are on. Steering feels stiffer than usual. The engine cannot be switched off. The ignition key cannot be removed. There are DTC entries present in the system (either static or sporadic). DTCs with description ?Brake control module - no signal/communication? are present in several control units. DTCs are stored in the ABS control module. This condition does not result in any drivability concerns. The steering system is fully connected. The insulation for the ABS wheel speed sensor is damaged in production. Over time, this can lead to corrosion on the wires and restricted functions with the ABS control module. Only the wires in the left bulkhead grommet are affected.
A011390 2033767-2017-12-05. Service bulletin. ELECTRICAL SYSTEM. 01 MIL on (DTC P1196/P1197/P0135, heater circuit fault lambda sensor) - Repair Authorization.
A011389 2033768-2017-12-05. Service bulletin. ELECTRICAL SYSTEM. MIL on. A cylinder misfire fault (DTC P0301 ? P0306) with DTC P130A is stored in the engine control module (ECM), J623 (address word 01).
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.
A171452 2038119-2017-12-05. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Supersedes Technical Service Bulletin Group 17 number 14-51 dated August 18, 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.
A351417 2032211-2017-12-05. Service bulletin. ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 35 number 12-08 dated December 21, 2012. The driver information system displays the message ?Gearbox malfunction: you can continue driving?. Gearbox warning light on (DTCs P179E00, P179F00, P0700, P060A).
A911463 2028190-2017-12-05. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE. Supersedes Technical Service Bulletin Group 91 number 13-08 dated September 20, 2013. The customer would like to add a different navigation map database for countries outside of the USA or Canada. The customer would like to change the MMI system language to a different language that is not already supported by MMI. When a song is being played and the track information for that song contains foreign language characters, the driver information system (DIS) in the cluster correctly displays the characters, but the MMI display does not.
A011400 2026299-2017-12-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. Supersedes Technical Service Bulletin Group 24 number 12-40 dated August 28, 2012. MIL on. DTCs for air-fuel ratio imbalance are stored in the engine control module (ECM). An incorrect software setting causes the DTC to be stored.
A911392 2030947-2017-12-05. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:SOFTWARE. Supersedes Technical Service Bulletin Group 91 number 12-61 dated September 25, 2012. The customer complains that when he or she is trying to place a phone call from the vehicle while using a Bluetooth®-connected phone, the phone call disconnects before it begins and an error shows on the MMI display. The message may be "Function not supported" or "Network error". The customer is using a phone with the Android operating system. In addition, Skype®, or another network-based communication software, is installed on the phone. Call can be placed directly from the phone without a problem. When the phone gets the request to place a call from the vehicle, a prompt appears on the phone asking the user to choose how the call should be placed. If the prompt is ignored, the MMI system disconnects the call assuming the phone is not responding.
A911388 2021780-2017-12-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Supersedes Technical Service Bulletin Group 91 number 10-70 dated October 26, 2010. Sequence of error messages are seen on the radio display screen after a CD was loaded into or removed from the internal CD drive. "Drive defective. The error could be corrected by resetting it (see radio system owner's manual). Otherwise, contact your Audi dealer." "The CD-drive is damaged and was therefore deactivated." The CD drive cannot be selected in the Source list and is described as "damaged." After the ignition is cycled or a radio reset performed, the CD drive is fully operational. DTC 00468 (CD-ROM Drive -R92- Faulty) is stored in the radio (address word 56). The DTC will be sporadic if the ignition has been cycled or a radio reset performed and will automatically be cleared after 40 ignition cycles without a reoccurrence. Only vehicles with the CAN-based generation 3 radio (Concert (PR 8UQ) or Symphony (PR 8YN)) are affected.

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