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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
A911691 2042506-2018-03-13. Service bulletin. EQUIPMENT. 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 .
A871679 2041717-2018-03-13. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin applies to any repair that requires replacement of the air conditioning compressor and details how to run a ODIS GFF test plan.
MY 2018 Audi A4-2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This document contains the revised checklist for the Audi Technician Reference Document. Please see PDF change file for details.
MY 2018 Audi A4-2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Settings: REMOVED: "Load On-Board Tutorials"
MY 2018 A4-S4-A42018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Settings: REMOVED: "Load On-Board Tutorials"
MY 2018 A4-S4-al2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Owner's Documents: REMOVED: "Explain the ?text to phone? features for viewing tutorials on a smartphone or at the Audi Technology website: www.auditechnology.com" Infotainment Section: REMOVED: "Explain and configure preset hard keys"
MY 2018 A4-S4-al2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This document contains the revised checklist for the Audi A4/S4/A4 allroad Delivery Guidelines. Please see PDF change file for details.
AWA-17-062018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin explains the details of the Audi Launch Allowance Program for the new EA839 V6 TFSI engine.
ATE-17-052018-02-05. Service bulletin. EQUIPMENT. Due to increasing requests for high voltage personal protective equipment (HVE PPE) for dealer technicians working with high voltage vehicles (Hybrid, Plugin Hybrid, Electric Vehicle), the Volkswagen Tools and Equipment Team has identified two US based suppliers to support dealers in USA and Canada.
A921613 2038151-2018-02-05. Service bulletin. EQUIPMENT. This bulletin provides instructions for repairing a vehicle with a washer solvent light on but the level is correct.
A921612 2038151-2018-02-05. Service bulletin. EQUIPMENT. This bulletin provides instructions for repairing a vehicle with a washer solvent light on but the level is correct.
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.
A911746 2048436-2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains repair instructions for when after PDI is performed, the customer states that the Audi connect services are not functioning.
50D3 - Circular2018-02-05. Service bulletin. EQUIPMENT:OTHER:LABELS. Vehicle Emissions Control Information Label - Certain model year 2018 vehicles have been incorrectly labeled with model year 2017 Vehicle Emissions Control Information labels instead of the correct model year 2018 label. This issue will not cause an emissions impact over the standard. Labor operation updated in claiming instructions.
50D3 - Circular2018-02-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT:OTHER:LABELS. Vehicle Emissions Control Information Label - Certain model year 2018 vehicles have been incorrectly labeled with model year 2017 Vehicle Emissions Control Information labels instead of the correct model year 2018 label. This issue will not cause an emissions impact over the standard.
MY 2018 A4-S4-al2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. Infotainment Section: Added: "If Audi connect is not functioning with an error message, ?The myAudi Server is currently unavailable?, reference TSB 2048436 to activate service"
A001798 2042954-2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions and trouble shooting for how to take the vehicle out of transport mode.
MY 2018 A4-S4-al2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Audi connect Section: Added: "If Audi connect is not functioning with an error message, ?The myAudi Server is currently unavailable?, reference TSB 2048436 to activate service"
A911735 2048436-2018-02-05. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This bulletin contains repair instructions for when after PDI is performed, the customer states that the Audi connect services are not functioning.
MY 2018 A4-S4-al2018-02-05. Service bulletin. EQUIPMENT:ELECTRICAL. Infotainment Section: Added "with two USB ports" to Audi Music Interface
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.
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

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