2025-2026 Audi Adaptive Cruise Control Unavailable TSB

Revision History

Technical Service Bulletin (TSB) 2080189/2 was initially published on December 9, 2025, as Revision 1. The current version, Revision 2, released on January 15, 2026, includes revised service verbiage.

Technical Background

Audi has identified a software issue within the exterior door handle sensor as the root cause for the "Audi adaptive cruise control unavailable" messages. This condition is not related to hardware failure but rather an internal software anomaly.

Symptoms

Owners may observe specific warning messages displayed in the instrument cluster. The primary symptoms include the verbatim messages: "Adaptive cruise control: currently unavailable. See owner's manual" or "Adaptive cruise assist: currently unavailable. Door open." These messages indicate a malfunction within the vehicle's adaptive cruise control system, specifically for vehicles built with KD2 from the factory.

Fault Codes / DTCs

When diagnosing this issue, technicians may find specific event memory entries logged in diagnostic address 0013. The following Diagnostic Trouble Code (DTC) and associated symptom numbers are relevant:

Code	Description	Symptom Number	Affected Door	Diagnostic Address
U112200	Data bus implausible message	16776924	Rear passenger side door	00BC
U112200	Data bus implausible message	16776925	Rear driver side door	00BB
U112200	Data bus implausible message	16776926	Front passenger side door	0052
U112200	Data bus implausible message	16776927	Driver side door	0042

For vehicles with diagnostic address 008B (and without diagnostic address 0013), no relevant event memory entries are typically logged.

Workshop Diagnosis Procedure

For vehicles displaying the "Audi adaptive cruise control unavailable" message, diagnosis involves checking the vehicle's diagnostic memory. The procedure varies slightly depending on the diagnostic address:

For vehicles with diagnostic address 0013:

1. Technicians will identify the affected door using the symptom number associated with DTC U112200. This code indicates a "Data bus implausible message" originating from the exterior door handle sensor.
2. Run the test plan titled "Read/erase event memory" in the door control unit using the Guided Functions (GFF) diagnostic tool. This is performed via specific diagnostic addresses: 0042 (Driver side door), 0052 (Front passenger side door), 00BB (Rear driver side door), and 00BC (Rear passenger side door).
3. Upload and review the diagnostic log to confirm if the entry "Sensor for exterior door handle - no communication" was read out under the respective function test.

For vehicles with diagnostic address 008B (and without diagnostic address 0013):

1. Run the program "Read/erase event memory" for all doors in the corresponding door control units using GFF, specifically through the Door electronics functions (0042 / 0052 / 00BB / 00BC).
2. Subsequently, upload and check the diagnostic log to see if the entry "Sensor for exterior door handle - no communication" was read out under the respective function test.

Important Warnings

Audi has issued specific instructions regarding this issue to prevent unnecessary repairs. Do not replace any components for this condition since this will not resolve the customer's concern. This TSB (2080189/2) explicitly states that the problem is a software issue in the exterior door handle sensor. If the entry "Sensor for exterior door handle - no communication" is stored in one or more door control units, technicians are instructed to postpone any repair, as there is currently no permanent solution available for the customer complaint. For vehicles still within the new model launch repair authorization period, workshops must create a web ticket with the Technical Assistance Center (TAC) and reference this TSB in the TAC case, in addition to entering the vehicle into the PSS database.

Repair Status and Temporary Remedy

As of the release of TSB 2080189/2, a sustainable software solution for the "Audi adaptive cruise control unavailable" issue is currently under development. This permanent fix is planned to be available by the end of the second quarter of 2026. Audi notes that this target date is based on planning and is subject to change due to potential delays in validation and regulatory approval. In the interim, the issue can be temporarily remedied by simply opening and closing the doors. Dealers are required to create a Pending Service Solutions (PSS) record when a customer reports this concern, documenting the issue for future resolution.

Warranty Information

For vehicles still under warranty, this Technical Service Bulletin is informational, guiding technicians on how to handle the customer complaint and record the issue. If the vehicle is outside of its warranty period, the TSB remains informational only. The relevant warranty claim details are:

• Claim Type: Informational only if outside warranty.
• Service Number: 5711
• Damage Code: 0039
• Labor Operations:
  • GFF / Guided Functions (0150 0010): See SRT with associated operations.
  • GFF / Guided Functions (0150 0060): Time stated on the diagnostic protocol.
• Claim Comment: As per TSB 2080189/2.

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 your Audi displays the "Audi adaptive cruise control unavailable" message, it is important to understand that this is a known software issue, not a mechanical failure requiring part replacement. While a permanent fix is not yet available, a temporary workaround involves opening and closing the vehicle's doors. Contact your authorized Audi dealer to report the issue. They will document the concern by creating a PSS record, which helps Audi track affected vehicles and ensures you are informed when the permanent software solution becomes available, expected by the end of Q2 2026.

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Source: NHTSA ID: 11028429, Transaction No.: 2080189/2