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Service bulletins for the 2018 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.

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

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Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
A911929 20535982019-04-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin contains instructions for MIB2 Standard on how to update the MMI.
SM 44-2017 EN2019-04-01. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return all part numbers listed in the document and order the superseded part numbers going forward.
Tire Pressure Ta2019-02-19. Service bulletin. EQUIPMENT. New Document
Scheduled Mainte2019-02-19. Service bulletin. EQUIPMENT. Added Oil Capacity Chart at the end of the document.
Scheduled Mainte2019-02-19. Service bulletin. EQUIPMENT. Under Additional Maintenance Items Section: Converted kilometers to miles for all items.
Scheduled Mainte2019-02-19. Service bulletin. EQUIPMENT. Changed format of Service Intervals Table Minor Maintenance Section: Added "Multi-Point Inspection - Completed" to checklist items. Created table for "Additional Maintenance Items"
A511711 2009967-2019-02-19. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for vehicle inspection, protection removal, and detailing.
A011884 2047707-2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin provides repair instructions for when DTC P195000, P10EF00, and/or B10F000 appears with no A/C or a MIL.
2018 A4-S4-allro2018-10-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Reminder Section: Changed GFF statement to the following: All PDI function tests must be run in Guided Fault Finding (GFF) using PDI Total Function Test Plan only.
Service Informat2018-09-24. Service bulletin. EQUIPMENT. Page 2 Disclosure information changed
A9118972018-09-24. Service bulletin. EQUIPMENT. This bulletin contains instructions for when the customer loses audio for the radio after ending an incoming phone call.
A4318292018-09-24. Service bulletin. EQUIPMENT. This bulletin contains repair instructions for DTC B200FF0.
SM 91-20182018-09-17. Service bulletin. EQUIPMENT:ELECTRICAL. The part numbers listed in the document are to be returned if they meet the criteria provided.
A011876 2047707-2018-09-17. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin provides repair instructions for when DTC P195000, P10EF00, and/or B10F000 appears with no A/C or a MIL.
A461891 2050535-2018-09-17. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER; SERVICE BRAKES, AIR:DISC:CALIPER. This informational only bulletin indicates that rear calipers missing the "S" badge are to not to be retrofitted to the old style.
A431829 2051336-2018-09-17. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains repair instructions for DTC B200FF0.
A011861 2050690_2018-05-21. Service bulletin. EQUIPMENT; ENGINE. This bulletin contains a software update for when the "Reduce Oil Level" message appears and the oil level is not over max specifications.
A011859 2050690_2018-05-21. Service bulletin. EQUIPMENT; ENGINE. This bulletin contains a software update for when the "Reduce Oil Level" message appears and the oil level is not over max specifications.
MY 2018 Audi Tec2018-04-16. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technician Reference Document Overview The Pre-Delivery Inspection Technician Reference Document is designed to be a resource used in hand with the Pre-Delivery Inspection Checklist (PDI). The PDI Checklist has been simplified to make the process more efficient, and in doing so, this document has been created to be used as a reference for checklist items that may have additional information. On the PDI Checklist, you find that certain items have been notated with an asterisk symbol (*), this lets you know that additional information can be found in this Technician Reference Document.
PDI 2018 Audi Te2018-04-16. Service bulletin. EQUIPMENT:ELECTRICAL. Audi A3 e-tron Sportback: Audi connect section: ADDED "Turn on the wireless network (if equipped) Ensure the wireless network is turned on (Telephone > Options > Wi-Fi® options > Wi-Fi® Mode ?Hotspot?) " Audi A3/S3/RS 3: ADDED: Verify system connects to mobile network (if equipped) Review TSB 2042942 for additional information Make sure the system fully connects to the wireless network (LTE symbol with service bars)(only applies if in an AT&T service area)
PDI 2018 Audi Te2018-04-16. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. All models: Vehicle Preparation section: ADDED "Using Guided Functions" to "Set adaption channel to enable CD Ripping (if equipped)" A8 and Q3: Audi connection: REMOVED: "Turn on the wireless network (if equipped)"
PDI 2018 A4-S4-a2018-04-16. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Reminders Section: REMOVED: "It is advised to start ODIS with the engine running to enable all 5F Test Plans in GFF and also to ensure SVM sees all control units during the SVM check vehicle configuration" Vehicle Preparation section: ADDED "Using Guided Functions" to "Set adaption channel to enable CD Ripping (if equipped)"
A911755 20484362018-04-16. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin contains repair instructions for when after PDI is performed, the customer states that the Audi connect services are not functioning.
A911768 2037809-2018-04-16. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This informational bulletin contains instructions about updating the navigation map.
MY 2018 PDI 3-8-2018-04-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Reminders: ADDED "For items marked with **, follow instructions for stock inventory vehicle" Under the hood inspection: REMOVED Lighting and Windshield: REMOVED "Install wiper blades" Trunk Inspection: Change "Verify inflatable repair kit" to "Verify inflatable spare tire" Moved "Check battery clamps for proper torque" from Under the hood inspection Interior: Added ventilated "Verify operation of heated seats/ventilated (if equipped) Settings: ADDED: "?Set Time source setting to ?GPS? and set Auto daylight savings time to ?on? CHANGED: Set ?Entertain. Fad.? in Parking aid to an audible level from "Medium". ADDED: Set ?Music volume while parking? to 6 lines ADDED (if equipped) to "Turn off Manual Speed Warning" Audi connect: ADDED: "Check LTE connection is possible (if vehicle is marked retail sold in DMS, data is only available after customer starts 6-month trial in www.myaudiconnect.com)" REMOVED: "?Verify system connects to mobile network (if equipped). Review TSB 2042942 for additional information" REMOVED: "No data available at PDI" from ?"Check Wi-Fi hotspot visibility"On-Hoist Inspection REMOVED: Perform a coolant reservoir cap pressure test Driving Performance: ADDED: "Verify engine Start-Stop System functionality" Post-Road Test Inspection: CHANGED: "Interrogate fault memory and print Diagnostic Log" to "Interrogate fault memory and upload Diagnostic Log to GFF Paperless Server" MOVED: "Check Service Interval and verify correct interval is displayed", "Check engine oil level", "Check all fluid levels and top off if necessary", and "Perform a battery test" from Under the Hood section ADDED: "**" to the end of "Apply Inventory Maintenance Sticker**" "?Install showroom charger to ensure battery remains charged at all times**"

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