2025-2026 Audi A6 Rear Lid Fault TSB 2080913/2

Audi has issued Technical Service Bulletin (TSB) 2080913/2 to address concerns with the power rear lid on certain 2025-2026 Audi A5, S5, Q5, SQ5, and A6 models. Owners may experience the rear lid failing to open or close properly, or closing with excessive speed. This TSB provides a detailed procedure for technicians to diagnose and resolve the Audi A6 rear lid fault.

This bulletin, initially published on February 6, 2026, and revised on February 12, 2026, clarifies the conditions under which this issue occurs. The underlying cause is often related to the rear lid control unit, specifically software version 0231, located at diagnostic address 0046 (convenience system central module).

Symptoms of the Rear Lid Fault

Owners of affected Audi vehicles may observe one or more of the following behaviors with their power rear lid:

• "The rear lid does not open as normal - it does not open fully."
• "It closes into the lock at full speed without the power latching system activating."
• "The rear lid does not close as normal and opens again."

These symptoms can occur sporadically and may not always trigger a fault code in the vehicle's event memory.

Workshop Findings and Diagnosis

When diagnosing this Audi A6 rear lid fault, technicians typically find that the complaint is intermittent and does not always leave a diagnostic trouble code (DTC). A key indicator is the presence of software version 0231 within the convenience system central module (diagnostic address 0046).

The technical background explains that the control unit might detect excessive force, causing it to stop the rear lid's movement. In some cases, the control unit may lose track of the rear lid's precise position, leading to the observed malfunctions.

Important Warnings for Service and Owners

Audi provides critical notices and cautions within TSB 2080913/2 that technicians and owners should be aware of during the repair process:

• NOTICE: "It is imperative to reset initialization of the rear lid and then adapt it again. If this is not performed, the parameters logged in the control unit no longer match the preload of the rear lid and a repeat repair may be required."
• NOTICE: "It is essential not to hinder or stop the movement of the rear lid under any circumstances. This would interrupt the initialization process."
• CAUTION: "Anti-trapping protection is NOT active for the entire duration of the initialization process. Make sure that there is no risk of trapping for you or other persons at any time."

Repair Procedure Summary

Addressing the Audi A6 rear lid fault involves a two-step service measure that must both be performed by a qualified technician:

1. Check Mechanical Setting of Rear Lid

The first step requires a thorough inspection of the rear lid's mechanical fit. Technicians must ensure the rear lid is precisely fitted and that the buffer forces at the rear lid buffers are within the specified range of 40N to 60N. This involves consulting the Workshop Manual's section on "Adjusting rear lid" and using specialized tools to measure forces. These tools include the spring pressure gauge VAS 895 035 and measurement film VAS 895 037, or alternatively, spring scales as described in the SOST article on spring pressure gauge VAS 895 035.

2. Initialize Rear Lid

After verifying the mechanical settings, the rear lid must be initialized. This process involves resetting the existing initialization and then adapting it again. Technicians will perform this using Guided Functions in the diagnostic system, specifically selecting the function "0046 - Rear lid electronics - basic setting." It is crucial that the rear lid's movement is not interrupted during this initialization to prevent issues with parameter logging and potential repeat repairs.

Required Tools or Parts

To perform the repair outlined in TSB 2080913/2, technicians will need specific tools:

• Spring pressure gauge VAS 895 035
• Measurement film VAS 895 037

Alternatively, spring scales compliant with the SOST article on spring pressure gauge VAS 895 035 can be used.

Warranty Information

For vehicles still under warranty, claims for this repair should be submitted in accordance with the Audi Warranty Policies and Procedures Manual. The service number for this repair is 5568, with a damage code of 0039. The labor operations associated with this TSB are:

• Adjust rear lid: Labor operation 5559 1599 (20 Technical Units)
• GFF / Self-diagnosis: Labor operation 0129 0050 (10 Technical Units)

If the vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only.

What Owners Should Know

Even after the TSB procedure is correctly performed, a repeat repair may sometimes be necessary. This can occur if the rear lid control unit (0046) is frequently woken up, causing it to forget the lid's position. One identified cause for this is the use of an adapted mobile key (vehicle key on a phone app). To reduce the likelihood of this specific Audi A6 rear lid fault recurring, owners may consider deactivating the mobile key or disabling the mobile phone's Bluetooth connection to the vehicle overnight.

Audi anticipates a production solution for this particular issue, involving software optimization, by Q3 2026.

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Source: NHTSA ID: 11029417