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Service bulletins for the 2018 Audi A4 allroad

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.

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

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Bulletins, newest first
SM 89-20182018-09-17. Service bulletin. EQUIPMENT:ELECTRICAL. The part number listed in the document are to be returned only if they meet the criteria in the document
A911802 2051664-2018-09-17. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin contains repair instructions for when there is an emergency call function message in the instrument cluster with DTC B191604.
A391821 2051558-2018-09-17. Service bulletin. EQUIPMENT:MECHANICAL; POWER TRAIN:CLUTCH ASSEMBLY. This bulletin contains repair instructions for when the message "four-wheel drive malfunction" shows up sporadically in the instrument cluster with DTC C05ED00.
A341834 2051575-2018-09-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT. This bulletin contains repair instructions when there is a squeaking noise from the MTF pump.
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.
Service Informat2018-09-17. Service bulletin. TIRES. Page 2 Disclosure information changed
A961826 2051239-2018-09-17. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains repair instructions for adapating the garage door opener when there is a programming error.
A911898 2051389-2018-09-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains instructions for when the MMI starts in the wrong menu.
A901892 2050584-2018-09-17. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains repair information for when the Key User login screen cannot be accessed.
A431829 2051336-2018-09-17. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains repair instructions for DTC B200FF0.
ATU_Electrical_J2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. Media playback - Overview of file formats
ATU_Chassis_Janu2018-05-21. Service bulletin. PARKING BRAKE. EPB ?Driver absent application? function
ATU_Body_January2018-05-21. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. power-operated rear lid, known issues and Analysis of causes
A961824 2050818_2018-05-21. Service bulletin. LANE DEPARTURE: WARNING. This bulletin contains a software update for when false warnings appear from the lane change assist.
A911887 2045106_2018-05-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL. This bulletin provides instructions on how to properly replace a coaxial connection if it is damaged.
A901891 2050584_2018-05-21. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair information for when the Key User login screen cannot be accessed.
A901890 2050584_2018-05-21. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair information for when the Key User login screen cannot be accessed.
A641853 2049661_2018-05-21. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update for when the exterior mirror tilt function is inoperative.
A401878 2047920_2018-05-21. Service bulletin. SUSPENSION:FRONT:WHEEL BEARING; WHEELS; STEERING; SUSPENSION:FRONT. The bulletin contains diagnosis information for noises on the front end of the vehicle. Potential rolling sounds.
A011855 2045673_2018-05-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This bulletin provides instructions regarding an SVM update needed when a DTC is stored in the engine control module.
2018 Audi Tire C2018-05-21. Service bulletin. TIRES. New Document Added
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.
Scheduled Mainte2018-04-16. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Additional Maintenance Section: Added, "(if applicable)" to Battery - Connected gateway - Replace
Scheduled Mainte2018-04-16. Service bulletin. ELECTRICAL SYSTEM. Additional Maintenance Section: CHANGED: "RS 7 Plus" to "RS 7 performance" on Rear Axle every 40,000 miles and Spark plugs - Replace every 30,000 miles or 3 years ADDED: "(except RS 7 performance)" and "(except S8 plus)" to Spark Plugs - Replace every 40,000 miles or 6 years
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)

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