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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

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
A1323162061461_62023-02-07. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides instructions for when there is a grinding/squeaking/tweeting noise coming from the engine compartment OR there is a message in the driver information system stating "Electrical system Malfunction! Please go to workshop". DTC P2BA300 may be stored.
AVIN4PIN202212222023-01-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; ELECTRICAL SYSTEM. 2022 Q3 PDC sensor connector loose at rear bumper 2022 A6 PDC sensor connector loose at front or rear bumper 2021-2022 A5Noise from front door trim panel while driving 2022 Q5 ACC warning is displayed, DTC C110300 Sensor misadjusted in DA 0013 2021-2022 e-tron quattro, e-tron SB Noise from front door trim panel while driving 2020-2021 Q3 Low coolant warning in cluster, coolant level is correct 2021-2022 Q7, Q8 Check engine lamp is illuminated and DTC P05A000: Active Grille Air Shutter "A" Stuck is stored in the ECM. 2022 Q3 Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 2020-2022 A5Rear PDC mount comes loose from rear bumper No new topics for December 2022
AVIN4PIN202210142022-11-04. Service bulletin. ENGINE AND ENGINE COOLING. Q3 2020-2021 Coolant warning Lamp - Customer states they receive a low coolant waning in the cluster. Coolant level appears to be full in the reservoir Q7, Q8 2021-2022 Active Air Shutter - Check engine lamp is illuminated and DTC P05A000: Active Grille Air Shutter "A" Stuck is stored in the ECM. Q5 2022 ACC sensor misadjusted - Customer states they have an ACC warning shortly after PDI (less than 600mi on the odometer) with a misadjusted ACC sensor (DTC C110300 in diag. addr. 0013) Q3 2022 Boost pressure sensor - Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 Q3 2022 Rear PDC sensor connector loose - Parking aid warning is displayed shortly after PDI. DTC B10F914: Right front center parking aid sensor Open circuit/short circuit to Ground (GND) may be set A6 2022 PDC sensor connector loose - Parking aid warning is displayed shortly after PDI. Either a front or rear PDC sensor is found not connected. e-tron GT 2022-2023 Noise from front door trim panel while driving or with audio playback - Video of noise before repair e-tron Quattro, e-tron Sportback 2021-2022 Noise from Front Door Trim Panel - Noise from front door trim panel while driving A5 2021-2022 Noise from Front Door speaker Grill - Noise from front door loudspeaker grille with music playback or while driving
A4722162055646_42022-09-01. Service bulletin. SERVICE BRAKES; ENGINE AND ENGINE COOLING. This bulletin contains repair instructions for when the vehicle sporadically does not start and there is a hard brake pedal concern.
A8722302067716_12022-09-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin advises that techs should document the specific o-ring seal that is replaced if a refrigerant leak is found and caused by the o-ring seal.
A4822282063528_32022-05-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for addressing intermediate shaft noises that are heard in the engine compartment.
A8722242064077_12022-05-05. Service bulletin. ENGINE AND ENGINE COOLING. This TSB describes a method for leak detection for R134A and R1234yf refrigerant platforms only.
A1722172060750_32022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for using the UV additive to find engine oil leaks.
A0122172066257_12022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin describes a software update to address various DTCs in the engine control module which have been stored without good reason.
A9222282065963_12022-03-04. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. This bulletin describes various conditions that may have arisen due to a leak in the corrugated windshield washer hose, and the associated repair.
A1922282025303132022-02-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin contains instructions for identifying and mixing factory fill coolants.
A1922272025303122022-02-04. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT. This bulletin contains instructions for identifying and mixing factory fill coolants.
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.
A4821132063528_22021-12-07. Service bulletin. ENGINE. This bulletin contains instructions for addressing intermediate shaft noises that are heard in the engine compartment.
A0121142063394_22021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for clearing DTCs P023600 and P060600.
A1921222046712_32021-08-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap.
A1321152061461_42021-08-04. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR:INTEGRATED STARTER(OTHER THAN PROPULSION); EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. This bulletin contains repair instructions to address noises or a message in the DIS display.
A1921192061918_32021-07-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
A4821042063528_12021-07-02. Service bulletin. ENGINE; EQUIPMENT. This bulletin contains instructions for addressing intermediate shaft noises that are heard in the engine compartment.
A1021222018288_92021-06-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This technical service bulletin reminds the reader to check for metal debris when replacing an engine.
A5521532062669_12021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin states that this is a normal condition and to not perform any repairs.
A1321132062387_12021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for determining if a repair is needed when coolant touches a poly V-belt and/or a toothed belt.
A1921122061918_22021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
A1721122060750_22021-03-04. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for using the UV additive to find engine oil leaks.
A1921112061918_12021-02-04. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.

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