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Service bulletins for the 2021 Audi A5

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.

1071 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
A5521652062730_22022-01-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin explains why the compartment lid cannot be closed using the buttons on the key sometimes.
A4421862056386_72022-01-05. Service bulletin. STEERING; SUSPENSION. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked.
A4021312024318_12022-01-05. Service bulletin. WHEELS. This technical service bulletin provides instructions for correcting a clicking sound from the wheel bearing(s).
A4021302023187_62022-01-05. Service bulletin. STEERING. This information bulletin provides an explanation for squeaking noises heard when the steering wheel is turned or maneuvered.
A3521402064312_22022-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This repair bulletin describes the process to address a DTC stored in the transmission control module
A1921262061918_42022-01-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
A0021552011732122022-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
A9721822061976_22021-12-07. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin contains guidance for submitting warranty wiring repairs.
A9021272064844_12021-12-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT. This bulletin contains repair instructions for when the Audi virtual cockpit does not start-up with no DTCs.
A4421842065160_12021-12-07. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; TIRES:TEMPORARY/EMERGENCY SPARE TIRE. This informational bulletin explains how the temporary/collapsible spare wheel inflates.
A9121502062115_72021-12-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains instructions for when the nav files are corrupted during an update.
A3921452048671_52021-12-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains instructions for when DTC U030000 appears and “All Wheel Drive Malfunction Message” is displayed in the instrument cluster.
A9021222064983_12021-12-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin states to replace the instrument cluster when there is a colorful vertical line (pixel error) in the Audi virtual cockpit.
A5721862058452_32021-12-07. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. This bulletin contains repair instructions for when the rear window defog button will light up and then turn off.
A4821132063528_22021-12-07. Service bulletin. ENGINE. This bulletin contains instructions for addressing intermediate shaft noises that are heard in the engine compartment.
A9121472061625_32021-12-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin states to create a PSS record when the message "SOS - Emergency call malfunction, please contact service" is displayed in the instrument cluster and DTCs B129B11 and B239C11 are stored in the control module for emergency call module and communication unit.
A9121462063702_32021-11-05. Service bulletin. UNKNOWN OR OTHER. This bulletin states to create a PSS when the MMI display turns blue. Workaround provided.
A9121442062942_32021-11-05. Service bulletin. UNKNOWN OR OTHER. This bulletin states to create a PSS record when the detailed interaction map flickers.
A9121422062266_32021-11-05. Service bulletin. UNKNOWN OR OTHER. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
A9121412064818_12021-11-05. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI; UNKNOWN OR OTHER. This bulletin contains repair instructions for when it is not possible to establish a bluetooth connection with DTC U110300.
A9121402063702_22021-11-05. Service bulletin. SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING; FORWARD COLLISION AVOIDANCE: CRASH IMMINENT BRAKING. This bulletin states to create a PSS when the MMI display turns blue. Workaround provided.
A9021162063913_32021-11-05. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains a software update for when the cluster's driver information system is blank.
A6921722063398_22021-11-05. Service bulletin. UNKNOWN OR OTHER. This informational bulletin outlines what is damage due to outside influence on a seat belt.
A3521392064312_12021-11-05. Service bulletin. POWER TRAIN. This bulletin contains three different repair scenarios for when DTC P17F900 is stored in the TCM with symptom code 22345 and there is a gearbox malfunction message.
A3421532064848_12021-11-05. Service bulletin. POWER TRAIN. This bulletin addresses an issue where basic settings cannot be performed as DTC P17F900 is stored in the TCM.

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