2023-2026 Audi Apple CarPlay Disconnects TSB 2074302/1

Symptoms of Apple CarPlay Disconnects

Owners of 2023-2026 Audi vehicles may experience unexpected Apple CarPlay disconnects. The primary symptom is the periodic appearance of the message "Smartphone interface deactivated" on the infotainment screen. This can occur while listening to the radio, SiriusXM, or using the navigation system, particularly when Apple CarPlay is running in the background.

When these Audi Apple CarPlay disconnects occur, the connection typically re-establishes shortly afterward. However, the system may sometimes bring CarPlay to the foreground, interrupting current audio playback. This behavior can happen multiple times within a short period, regardless of the vehicle's location.

Technical Background

Audi TSB 91 24 21 2074302/1 explains that the root cause of these Apple CarPlay disconnects is a bug within the current iOS version (specifically iOS 17.*) used as the operating system on iPhones. The connection to the Audi MMI (Multi Media Interface) can be interrupted if CarPlay is active in the background while other vehicle functions like the radio or integrated navigation are in the foreground.

While the iPhone typically reconnects within a few seconds, it may then take over as the audio source. This behavior is dependent on the phone's decision to appear in the foreground. The TSB clarifies that this complaint is not caused by the vehicle itself. A change in behavior is anticipated with iOS version 18.*.

Important Warnings for Owners

Audi has issued specific guidance regarding this issue:

• Do not perform any repairs: Dealers are instructed not to perform any repairs for this concern, as such repairs may be denied under warranty. This issue is not a vehicle fault.
• No repair solution from manufacturer: Owners should be informed that this condition is known and caused by a third-party device (Apple iPhone). No repair solution can be offered by the vehicle manufacturer.
• Not covered by Audi Warranty: This concern is due to a third-party system and is not covered by any Audi Warranty.

Owner Action and Recommendations

Since the Audi Apple CarPlay disconnects are attributed to iPhone software, there is no vehicle-specific repair available. Owners are advised to:

• Update iOS: Always update your mobile device to the most current available software level. Future iOS versions (specifically iOS 18.* and later) are expected to address the underlying bug causing the Apple CarPlay disconnects.
• Understand Warranty Limitations: Be aware that any attempts to repair this issue at an Audi dealership will not be covered by your vehicle's warranty, as it is not a defect in the Audi vehicle itself.

By keeping your iPhone's operating system updated, you may resolve the frequent "Smartphone interface deactivated" messages and improve the stability of your Audi Apple CarPlay connection.

SOURCE: NHTSA ID: 11002937, Audi Technical Service Bulletin 91 24 21 2074302/1