Service bulletins for the 2021 Audi A4
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.
1057 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| A6924112056406_5 | 2024-07-02. Service bulletin. AIR BAGS. This bulletin provides information when the airbag warning light is on, DTC B13BCF2 stored in the airbag control module. |
|---|---|
| A9124162018187_14 | 2024-07-02. Service bulletin. STRUCTURE:BODY. This bulletin provides information when there are speaker rattles, vibration or audio interference. |
| A9024992069331_4 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there is a message in the instrument cluster: Warning "Instrument cluster: fault. Limited warning messages. Please contact workshop" B200096. |
| A9024982065932_3 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the virtual cockpit display has a white sheen. |
| A9024972064983_8 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulleitn provides information when the virtual cockpit displays a colorful line (pixel error). |
| A9024022064844_3 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the virtual cockpit remains blank on startup. |
| A9024002065960_4 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the display is distorted due to a broken screen. |
| A7024922044417_12 | 2024-07-02. Service bulletin. STRUCTURE:BODY. This bulleint provides information for when noises are heard from the headliner/sunroof area. |
| A5524962070966_2 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when a customer requests that the gesture-ctonrolled rear lid opening/closing (virtual pedal) function be deactivated |
| A3424682067653_7 | 2024-07-02. Service bulletin. POWER TRAIN. This bulletin provides information when there is function restriction with event memory entry P071800 - P276800 (symptom 20736 - 20737). |
| AWA 24-04 | 2024-06-25. Warranty extension. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. Diagnosed and confirmed malfunction of the vehicle’s AEB system that resulted from failure or malfunction of the AEB system’s control unit, camera(s), LIDAR, and/or sensor(s) which enable automatic emergency braking functionality. |
| A9424812073332_3 | 2024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there is noise while steering. |
| A9124152073629_2 | 2024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when Apple CarPlay connection is dropped repeatedly in short intervals. |
| A9124092059528_9 | 2024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when DTC B200096 or B200000 are stored in the telematics control module; ConBox High. |
| A9024962071281_2 | 2024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there is an instrument cluster warning "Fault: Limited warning messges", DTC B174404. |
| A9024952059891_6 | 2024-06-25. Service bulletin. ELECTRICAL SYSTEM. This byulletin provides information when the Audi pre sense icon for restricted function is displayed after the engine starts. |
| A9024872073747_2 | 2024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there are scratches or a coating on the cover of the instrument cluster, or if there are particles inside the housing. |
| A9024862069331_3 | 2024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the warning "Instrument cluster: fault. Limited warning messages. Please contact workshop." B200096 |
| A6624062073860_1 | 2024-06-25. Service bulletin. STRUCTURE:BODY. This bulletin provides information when there are stains/marks on the sill panel trim. |
| A5724432027368_5 | 2024-06-25. Service bulletin. STRUCTURE:BODY. This bulletin provides information when the door handle touch sensors for Audi advanced key are inoperative. |
| A4024762047920_10 | 2024-06-25. Service bulletin. STRUCTURE:BODY. This bulletin provides information when there are noises from the front end and dash panel while the vehicle is in motion. |
| A1124002073917_1 | 2024-06-25. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information for when there is a fluid sample request from Product Support. |
| A0124232073867_1 | 2024-06-25. Service bulletin. ENGINE. This bulletin provides information when DTC U14A00 Terminal 30 is stored in the ECM. |
| A0024852021205_8 | 2024-06-25. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information on the ordering procedures for VIN Plates, and Safety Certification labels. |
| AWA 24-04 | 2024-06-25. Warranty extension. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. Diagnosed and confirmed malfunction of the vehicle’s AEB system that resulted from failure or malfunction of the AEB system’s control unit, camera(s), LIDAR, and/or sensor(s) which enable automatic emergency braking functionality. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.