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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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Bulletins, newest first
MY 2018 A4-S4-al2018-02-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Audi connect® section: Removed:??"Enable Google EarthTM (if equipped)*"
A911732 2033355-2018-02-05. Service bulletin. FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. This informational bulletin contains information on why ACC sensor could be deactivated.
A461773 2047919-2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin explains why a slight rattling or click noise can be heard from the front of the car at about 25 mph.
A461772 20478302018-02-05. Service bulletin. SERVICE BRAKES. This informational bulletin contains instructions for proper brake maintenance.
A441765 2048000-2018-02-05. Service bulletin. TIRES. This bulletin is for gathering data on Pirelli tires to help find a solution for flat spots during transportation.
A011717 2047707-2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This informational bulletin provides instructions for when DTC P195000 appears but there is no customer concern.
Maintenance Sche2017-10-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Additional Maintenance Items Section: Perform first at 60,000 miles: REMOVED RS 3 from Air Cleaner exceptions
Scheduled Mainte2017-10-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. New document
12-13-2016E2017-10-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. New document
12-13-2016C2017-10-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. New document
12-13-2016A2017-10-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. New document
A191777 2046712-2017-10-04. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap.
A921614 2038151-2017-09-27. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. This bulletin provides instructions for repairing a vehicle with a washer solvent light on but the level is correct.
A911641204366022017-03-07. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; SEATS:MID/REAR ASSEMBLY. THIS TECHNICAL SERVICE BULLETIN EXPLAINS HOW TO DIAGNOSE ISSUES WITH THE REAR SEAT ENTERTAINMENT TABLETS AND HOW TO UPDATE THE SOFTWARE OF THE TABLETS.
A911639204201332017-03-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS TECHNICAL SERVICE BULLETIN EXPLAINS HOW TO DIAGNOSE AND RESOLVE ISSUES WITH AUDI CONNECT ONLINE DESTINATION SEARCH, GOOGLE EARTH NAVIGATION VIEW, AND INRIX ONLINE TRAFFIC.
A911637204250622017-03-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE. THIS TECHNICAL SERVICE BULLETIN EXPLAINS HOW TO DETERMINE THE STATUS OF ACTIVATION KEYS (THAT AFFECT THE FUNCTION OF AUDI DRIVE SELECT, CRUISE CONTROL, NAVIGATION, BLUETOOTH, SMARTPHONE INTERFACE AND VOICE RECOGNITION), AND HOW TO UPDATE THEM .
A171672203811962017-03-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY. THIS TECHNICAL SERVICE BULLETIN INSTRUCTS THE READER TO TEST FOR AND REPLACE A DEFECTIVE OIL LEVEL SENSOR.
A171671203811952017-03-02. Service bulletin. ENGINE. THIS TECHNICAL SERVICE BULLETIN INSTRUCTS THE READER TO TEST FOR AND REPLACE A DEFECTIVE OIL LEVEL SENSOR.
A911664204250632017-02-21. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS TECHNICAL SERVICE BULLETIN EXPLAINS HOW TO DETERMINE THE STATUS OF ACTIVATION KEYS (THAT AFFECT THE FUNCTION OF AUDI DRIVE SELECT, CRUISE CONTROL, NAVIGATION, BLUETOOTH, SMARTPHONE INTERFACE AND VOICE RECOGNITION), AND HOW TO UPDATE THEM .
A911664204250632017-02-17. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. THIS TECHNICAL SERVICE BULLETIN EXPLAINS HOW TO DETERMINE THE STATUS OF ACTIVATION KEYS (THAT AFFECT THE FUNCTION OF AUDI DRIVE SELECT, CRUISE CONTROL, NAVIGATION, BLUETOOTH, SMARTPHONE INTERFACE AND VOICE RECOGNITION), AND HOW TO UPDATE THEM .
A171675203811972016-10-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. THIS TECHNICAL SERVICE BULLETIN INSTRUCTS THE READER TO TEST FOR AND REPLACE A DEFECTIVE OIL LEVEL SENSOR.

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