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.
By type
By component
By trouble code
By topic
| MY 2018 A4-S4-al | 2018-02-05. 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. |
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| MY 2018 Audi Nor | 2018-02-05. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. New Document |
| AWA-17-06 | 2018-02-05. 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-17-05 | 2018-02-05. 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. |
| 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. |
| 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 - Circular | 2018-02-05. 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. |
| A001799 2045316- | 2018-02-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information about the Start/Stop system. |
| 50D3 - Circular | 2018-02-05. 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. |
| A011731 2047707- | 2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This informational bulletin provides instructions for when DTC P195000 appears but there is no customer concern. |
| A011729 2048604- | 2018-02-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains a software update for a MIL on with DTC P008700. |
| A401770 2018194- | 2018-02-05. Service bulletin. SUSPENSION. This informational bulletin contains knowledge on why oil may appear on one or several of the shock absorbers. |
| A941791 2012749- | 2018-02-05. Service bulletin. EXTERIOR LIGHTING. This informational bulletin contains technical information for when there is condensation visible on the inside of the headlight, taillight, fog light, side marker light, front turn signal, daytime running lights, and/or third brake light lens. |
| MY 2018 A4-S4-al | 2018-02-05. 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" |
| A911737 2047576- | 2018-02-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This is a reference bulletin that contains software update information for the MID2 MMI system. |
| A911736 2024323- | 2018-02-05. Service bulletin. FORWARD COLLISION AVOIDANCE: DYNAMIC BRAKE SUPPORT/BRAKE ASSIST. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning. |
| A461774 2047919- | 2018-02-05. Service bulletin. SERVICE BRAKES. This informational bulletin explains why a slight rattling or click noise can be heard from the front of the car at about 25 mph. |
| A191789 2046712- | 2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap. |
| 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-al | 2018-02-05. 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-al | 2018-02-05. Service bulletin. EQUIPMENT:ELECTRICAL. Infotainment Section: Added "with two USB ports" to Audi Music Interface |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.