2025-2026 Audi A5 / S5 / Q5 / SQ5 Rear Lid Stops Opening/Closing

Symptoms

Owners of certain 2025-2026 Audi A5, S5, Q5, and SQ5 models may experience issues with their vehicle's rear lid. The primary symptom reported is that "The rear lid only opens slightly and then stops." Similarly, the rear lid may also only close slightly before stopping. These issues can occur intermittently, and importantly, no event memory entry or fault code is logged in the vehicle's system, making diagnosis challenging without specific guidance.

Technical Background

Audi Technical Service Bulletin 2080988/1 explains that the root cause of the "Audi A5 rear lid stops" problem lies in the factory calibration process. During the initial setup, the current draw for the rear lid drive motors may be set too low under unfavorable circumstances. This incorrect calibration can lead to the irregular behavior observed when the rear lid is operated, even without triggering any diagnostic trouble codes (DTCs) or storing event memory entries.

Important Warnings

Owners and technicians should be aware of several critical warnings related to this repair:

• "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." This highlights the importance of following the full procedure to avoid recurring issues.
• "It is essential not to hinder or stop the movement of the rear lid under any circumstances. This would interrupt the initialization process." During the initialization, the rear lid must be allowed to move freely.
• "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." This is a crucial safety warning, as the rear lid's safety features are temporarily disabled during the initialization procedure.

Repair Procedure Summary

Addressing the "Audi A5 rear lid stops" condition involves a three-step process outlined in TSB 2080988/1:

1. Check for Software Update: The first step is to verify if a software update is available. This involves performing the software update described in TSB 2079690,00, titled "Combined software update 03.10.00/C (28.13.01) KD2". Technicians should check diagnostic address 0046; if the software version is 0231 or higher, the vehicle already has the optimized software.
2. Check Mechanical Setting of Rear Lid: After the software update, the mechanical fit of the rear lid must be checked. This includes ensuring the precise fit and verifying the permissible buffer forces, which should be between 40 and 60 Newtons (N) at the rear lid buffers. Technicians will refer to the Workshop Manual's "Adjusting rear lid" section and use specialized tools for this measurement.
3. Initialize Rear Lid: The final step is to initialize the rear lid. This requires resetting the initialization and then adapting the system again. The process is initiated through Guided Functions using the function "0046 - Rear lid electronics - basic setting". It is critical that the rear lid's movement is not obstructed during this initialization, as anti-trapping protection is temporarily inactive.

Required Tools and Parts

To perform the mechanical checks and adjustments for the rear lid, specific tools are required:

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

Warranty Information

Audi Technical Service Bulletin 2080988/1 outlines the warranty claim procedures for this repair. The Service Number is 5568, and the Damage Code is KD02. Labor operations include a combined update and adjustment of the rear lid, with specific time units allocated for software updates (0151 0010, 0151 0040), additional attempts after a flash abort (0150 9999), adjusting the rear lid (5559 1599), and self-diagnosis (0129 0050). If the vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only, and repair costs may apply.

Owner Action

If your 2025-2026 Audi A5, S5, Q5, or SQ5 is exhibiting symptoms where the rear lid only opens or closes slightly and then stops, it is recommended to contact an authorized Audi service center. Inform them about the issue and mention Audi Technical Service Bulletin 2080988/1. The technicians will perform the necessary software updates and mechanical adjustments to resolve the problem.

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Source: NHTSA ID: 11029427