Service bulletins for the 2021 Audi A4 allroad
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.
785 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| A9424762073332_2 | 2024-05-07. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information for when there is noise when steering. |
|---|---|
| A9124992073629_1 | 2024-05-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin provides information when the Apple CarPlay connection is dropped repeatedly in short intervals. |
| A9124982073627_1 | 2024-05-07. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when there is a wrong way driver warning in the MMI with MIB3. |
| A9024852073747_1 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when there are scratches, or a coating on the cover of the instrument cluster, or particles in the housing. |
| A9024842032113_9 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides general information regarding outside air temperature readings. |
| A9024832059335_5 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when there is noise from around the instrument cluster. |
| A7224552062113_6 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when the rear backrest release in the luggage compartment is inoperative. |
| A7224542072225_2 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This Pending Service Solution (PSS) requests that technicians enter a record into the PSS Database in instances where there is noise from the backrest of the front seat. |
| A6024702063187_5 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when the panoramic sunroof opening outer perimeter seal is loose. |
| A9124942073582_1 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides general troubleshooting for connection complaints related to Apple CarPlay. |
| A9124932059528_8 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when the DTC B200096 or B200000 is stored in the telematics control module; ConBox High. |
| A9124902073135_2 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This Pending Service Solution (PSS) requests that technicians create a PSS Database record in instances where the radio favorites are lost/shortcuts are greyed out in vehicles with MIB3. |
| A5724342017082_1 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when the remote control key is inoperative. |
| A3924602059057_8 | 2024-05-06. Service bulletin. POWER TRAIN. This bulletin provides information when there is binding or vibrations in tight turns in vehicles equipped with quattro Ultra. |
| A2724712067906_5 | 2024-05-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information for when DTC P0A7D00 is stored. |
| A942473201274917 | 2024-04-05. Service bulletin. EXTERIOR LIGHTING; UNKNOWN OR OTHER. This bulletin provides information when the exterior lights have moisture accumulation. |
| A9124892069112_5 | 2024-04-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information on various improvements for MIB 3. |
| A8724702064077_4 | 2024-04-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REFRIGERANT HOSES AND FITTINGS. This TSB describes a method for leak detection for R134A and R1234yf refrigerant platforms only. |
| A7024892044417_1 | 2024-04-04. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This bulletin provides information when there are noises from the headliner/sunroof area. |
| A4824642063546_4 | 2024-04-04. Service bulletin. STEERING. This bulletin provides information on the identification of noises in the dynamic steering. |
| A0124142071243_2 | 2024-04-04. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This bulletin provides information when there are whistling noises from the turbo charger at 1500 - 2200 RPM, and approximately 70% load. |
| A9424742073332_1 | 2024-04-04. Service bulletin. UNKNOWN OR OTHER; STEERING. This bulletin provides information if there is noise when steering the vehicle. |
| A9424722073282_1 | 2024-04-04. Service bulletin. UNKNOWN OR OTHER; EXTERIOR LIGHTING:HEADLIGHTS. This bulletin provides information on visual concerns with the headlight lens. |
| A5524942072288_3 | 2024-04-04. Service bulletin. UNKNOWN OR OTHER; LATCHES/LOCKS/LINKAGES:TRUNK LID:LOCK. This bulletin provides information for when the power rear lid does not open or close; DTCs B121102, B120A02. |
| A4624552061403_2 | 2024-04-04. Service bulletin. SERVICE BRAKES, AIR:DISC:PADS; UNKNOWN OR OTHER. This bulletin provides information for when the brake pad wear indicator is on in the instrument cluster. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.