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
| A2724762074729_1 | 2024-08-06. Service bulletin. STRUCTURE:BODY. This bulletin provides information when there are noises/vibration from the front of the vehicle while in dynamic mode. |
|---|---|
| A2424622074811_1 | 2024-08-06. Service bulletin. POWER TRAIN. This bulletin provides infomration when the Engine: coasting function not available - 4-cyl. 2.0 ltr. TFSI mild hybrid. |
| A2424612074810_1 | 2024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information when there is a fault shown; Engine: start/stop system, and the start system is not working; mileage below 50 km/32 miles. |
| A1324252061461_10 | 2024-08-06. Service bulletin. ENGINE. This bulletin provides information when the starter/generator drive belt is noisy or came off. |
| A0124312072273_2 | 2024-08-06. Service bulletin. ENGINE. This bulletin provides information when the MIL is on; electric changeover valve N316 - P2004, P2006, P2014, P2015. |
| A0124302074640_1 | 2024-08-06. Service bulletin. ENGINE. This bulletin provides information when the defrost function deactivates after 5-10 seconds and/or MMI settings are lost. |
| A0024872002047_12 | 2024-08-06. Service bulletin. UNKNOWN OR OTHER. This bulletin provides Audi technicians with information to prepare for contact to the Technical Assistance Center (TAC). |
| A9424822074347_1 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informationw hen there are optical concerns with the tail lights. |
| A9124252018187_15 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informaiton when there are speaker rattles, vibrations, or audio interference.A1 |
| A9124232059528_10 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there is an eCall fault/eCall LED red with DTC B200000 in vehicles with ConBox High. |
| DC_Q5 Hybrid | 2024-07-02. Other. UNKNOWN OR OTHER. This document provides clarity on the MY24 Audi Q5 Hybrid fault code with technical service bulletin release on Monday, June 24. |
| 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). |
| A9424822074347_1 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informationw hen there are optical concerns with the tail lights. |
| A9124252018187_15 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informaiton when there are speaker rattles, vibrations, or audio interference.A1 |
| A9124232059528_10 | 2024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there is an eCall fault/eCall LED red with DTC B200000 in vehicles with ConBox High. |
| DC_Q5 Hybrid | 2024-07-02. Other. UNKNOWN OR OTHER. This document provides clarity on the MY24 Audi Q5 Hybrid fault code with technical service bulletin release on Monday, June 24. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.