2022-2024 Audi Wireless ASI Connection Drop-Outs TSB

Symptoms of Wireless ASI Connection Drop-Outs

Owners of 2022-2024 Audi A3, S3, RS 3, Q3, and Q4 e-tron models equipped with MIB3 and ASI (Apple CarPlay or AndroidAuto) may experience intermittent connection issues. The primary symptom is the wireless ASI connection being lost or interrupted, particularly in specific locations such as near toll booths or other areas with microwave transmitters. This can manifest as an interruption in music streaming or a temporary complete loss of the wireless connection to the vehicle. The connection typically reestablishes once the vehicle leaves the affected area. It's important to note that no relevant diagnostic trouble codes (DTCs) are stored for this condition, meaning a check engine light or similar warning will not appear.

Technical Background

Audi Technical Service Bulletin 2068838/2 explains that the root cause of the wireless ASI connection drop-outs is outside interference on the 2.4GHz and 5GHz wireless frequency spectra. This external interference can cause the ASI connection in the vehicle to become unstable, leading to the described symptoms. This issue specifically affects the wireless functionality of Apple CarPlay and Android Auto.

Repair Procedure Summary

For 2022-2024 Audi A3 and Q3 vehicles experiencing wireless ASI drop-outs, a specific diagnostic and adjustment procedure is recommended. This involves turning on the ignition and waiting approximately five minutes for the MMI system to fully initialize. Technicians will then complete the test plan titled "Replace control module J794" using the GFF (Guided Fault Finding) system in ODIS (Offboard Diagnostic Information System), including all populated sub-test plans. Crucially, this procedure is performed without actually replacing any parts.

During the diagnostic process, if prompted whether the old control unit is still installed in the vehicle, the technician must select "no." Following the test plan, a vehicle bus sleep cycle must be performed. This measure aims to improve the system's behavior when encountering strong outside interference on the WiFi spectrum.

For 2022-2024 Audi Q4 e-tron models, an optimization is expected to be released by the end of Q1/2023 (subject to change). This update is designed to reduce the vehicle's susceptibility to external interference on the WiFi frequency spectrum. However, due to physical limitations, strong interference may still cause the ASI connection to drop, and this may not always be preventable. Audi notes that a wired ASI connection can be used as these are not susceptible to the same kind of interference.

Important Warnings for Owners

Owners should be aware of several key points regarding this issue:

• For A3/Q3 models, the repair procedure involves a diagnostic test plan for "control module J794" without actually replacing any parts. Do not consent to unnecessary part replacements for this specific issue.
• For Q4 models, even with the upcoming optimization, strong interference may still cause connection drops due to physical limitations. This issue may not always be entirely preventable.
• If your vehicle is outside of its warranty period, this Technical Service Bulletin 2068838/2 is informational only, and any diagnostic or repair costs may not be covered by Audi.
• Wired Apple CarPlay or Android Auto connections are not affected by this type of wireless interference and can be used as an alternative.

Warranty Information

This service is generally covered under warranty for eligible vehicles. The claim types include 110 for vehicles up to 50,000 miles or 48 months, and G10 for CPO (Certified Pre-Owned) Covered Vehicles, requiring owner verification. The Service Number for this bulletin is 9196, and the Damage Code is 0039. Labor operations for checking the vehicle and performing the bus sleep cycle (0689 0199) are allotted 10 Technical Units (TU). Diagnostic time using GFF (0150 0000) is allocated based on the diagnostic protocol, with a maximum of 50 TU. Road tests before and after the service procedure are not allotted any additional time (0 TU). All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

Owner Action

If you are experiencing wireless ASI drop-outs in your 2022-2024 Audi A3, S3, RS 3, Q3, or Q4 e-tron, schedule an appointment with your authorized Audi dealer. Describe the symptoms, specifically mentioning the wireless ASI drop-outs and when they occur. Referencing Audi Technical Service Bulletin 91 23 62 2068838/2 may help the service advisor quickly identify the correct procedure. The diagnostic and repair work for the Audi S3 wireless ASI drop-outs should be covered under warranty if your vehicle qualifies.

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Source: NHTSA ID 10231079