2021-2022 Audi e-tron Loud Turn Signal Sound TSB

Symptoms

Owners of 2021-2022 Audi e-tron and e-tron Sportback quattro models may notice an unusually loud turn signal sound. The primary symptom reported is that "When using the turn signal, the clicking sound from the internal speaker seems to be about twice as loud as expected on some occasions."

Technical Background

This issue stems from a software bug within the Audi virtual cockpit system. This bug causes the internal speaker to produce the turn signal clicking sound at a volume significantly higher than intended, leading to a noticeable and potentially distracting noise for the driver.

Production Solution

Audi has addressed this issue in current production vehicles by implementing optimized software for the Audi virtual cockpit. This updated software corrects the bug, ensuring the turn signal sound is at the appropriate volume.

Repair Procedure Summary

To fix the loud Audi e-tron turn signal sound, technicians must perform a software update on the Audi virtual cockpit. This update requires specific equipment and adherence to Audi's service procedures.

1. Preparation: Ensure an ODIS Tester is available. The vehicle key must be placed on the emergency key reader coil to start and remain there during the update process.
2. Software Acquisition: The Audi virtual cockpit software update can be obtained via a USB Flash drive (specific part numbers apply based on model year) or downloaded from MirrorServer using the SD Creator Program.
3. Update Process: The update can be performed using one of two methods, as detailed in TSB 2060523: "91 MIB3 Software Update Instructions". The SVM code 17A040 is used for this procedure.
   • Method 1: Automated update using ODIS.
   • Method 2: Manual update, typically used if there are SVM code or server issues.

The entire update process, including the software update and SVM work, is estimated to take approximately 30-60 minutes.

Required Tools or Parts

Technicians will need the following to perform the software update:

• ODIS Tester
• SVM code: 17A040
• USB Flash Drive containing the Audi virtual cockpit software update:
  • For MY2021 vehicles: Part Number 4N0 906 961 AQ
  • For MY2022 vehicles: Part Number 4KE 906 961 A

Additional reference TSBs that may be necessary for this procedure include TSB 2039206 (How to watch TSB videos), TSB 2011732 (Software Version Management (SVM) operating instructions), TSB 2060523 (91 MIB3 Software Update Instructions), and TSB 2047812 (SD Creator: how to set up and use the SD Creator).

Warranty Information

This software update is generally covered under warranty. The claim types are 110 for vehicles up to 48 months/50,000 miles, or G10 for CPO (Certified Pre-Owned) covered vehicles, subject to owner verification. If the vehicle is outside of any warranty, this Technical Service Bulletin serves as informational guidance only.

The relevant warranty codes are:

• Service Number: 9025
• Damage Code: 0039
• Labor Operations: Software Update (includes checking for DTCs) 0151 0000 (Maximum 100 TU)

Important Warnings

Owners and technicians should note the following critical instruction during the update process: "The vehicle key has to be placed on the emergency key reader coil to start and during the update." Failing to do so could interrupt the update.

Source: NHTSA ID 10207100