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Service bulletins for the 2018 Audi S5

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
A6423862047061_42023-02-07. Service bulletin. VISIBILITY:WINDSHIELD. This bulletin provides instructions for when faint images appear on the windshield from the production sticker, or an image of the suction cups used to install the windshield in production.
A9623812051239_32023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL; BACK OVER PREVENTION. This bulletin provides instructions for when the customer is unable to program their garage door opener to their vehicle.
A6623952060333_32023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; STRUCTURE. This bulletin provides instructions when the black optic exterior trim is discolored.
A4423972022563_22023-02-07. Service bulletin. VEHICLE SPEED CONTROL. This bulletin provides instructions for when a vibration is felt in the floor, seat, footwell, pedals or steering wheel while driving at highway speeds from 55 - 80 mph.
A4323682059665_42023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides instructions for when the warning light for suspension illuminates in the instrument cluster.
A1023252059446_62023-02-07. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information for when there is oil found in the engine compartment, front end, and around the filler cap, and a smell is coming from the oil compartment.
DC_Alternator_22023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
A9123592036576_72023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin advises that the MMI screen may freeze, or go blank and then restart when a special character like a symbol or emoticon is used in the name field for contact(s).
A8723372055257_62023-02-07. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides directions when the customer describes a problem with the HVAC system DTCs B11AF07 and/or B109207 could be logged as sporadic or static.
A8023122062583_22023-02-07. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides instructions for when the customer advises that there is insufficient or uneven cabin heating from the HVAC system.
A4623402069078_12023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for when the zirconium inserts found to be not firmly attached during service work.
A0123342054893_62023-02-07. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides instructions for when the message "Please reduce oil level" is reported.
DC_Alternator2023-01-06. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Support for Customers Affected by Alternator Back-order
DC_RECALLS2023-01-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SAFETY RECALLS, COMPLIANCE RECALLS and STOP SALES
A5722002022032102023-01-06. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LOCK. This technical service bulletin provides troubleshooting information for the vehicle locking system.
A9722892061976_32022-12-06. Service bulletin. ELECTRICAL SYSTEM:WIRING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains guidance for submitting warranty wiring repairs.
A9122452068435_12022-12-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. This bulletin states that due to a software malfunction in Apple iOS Version 16.0.x there are restrictions with bluetooth connection.
DC_91CD202210212022-11-04. Service bulletin. EQUIPMENT:ELECTRICAL. 3G Turndown (91CD) Warranty Claim Documentation
DC_91CD_202209272022-10-05. Service bulletin. EQUIPMENT:ELECTRICAL. 3G Turndown (91CD) Activation Support – Activation Rate Improvement Reminder
A2422602067937_12022-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin offers further guidance regarding diagnosis and system information for vehicles with a 48 V electrical system.
A1722202067906_12022-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides detailed instructions for diagnosis when DTC P0A7D00 is present.
A1022242059446_52022-09-01. Service bulletin. UNKNOWN OR OTHER. This bulletin advises to replace the membrane in the breather line in instances where oil found in the engine compartment, front end, and around the filler cap, or a smell is detected.
A0022582045316_62022-09-01. Service bulletin. ELECTRICAL SYSTEM:IGNITION. This bulletin contains information for diagnosing the Start/Stop system.
DC_91CD 202208172022-09-01. Service bulletin. EQUIPMENT. 91CD Activation Percentage Improvement Support.
DC_91CD2022-09-01. Service bulletin. EQUIPMENT. 3G Turndown (91CD) Activation Support

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