2025-2026 Audi A3/S3 Seat Heater Button Flashing TSB

Symptoms of the Flashing Seat Heater Button

Owners of 2025-2026 Audi A3 and S3 models may notice that the seat heater button on the air conditioner control console flashes intermittently. When this occurs, the seat heating function becomes unavailable. This can be an unexpected inconvenience, especially in colder weather.

Important Warnings for Owners

Audi has provided specific guidance regarding this issue, identified by Transaction No. 2077639/1. It is crucial for owners to understand these points:

• Do not replace any components for this condition, as this will not resolve the customer's concern. This means that attempting to replace the seat heater button or associated control unit will not fix the problem and could lead to unnecessary costs.
• A permanent solution for the Audi S3 seat heater button flashes issue is not expected before the 3rd quarter of 2025. This timeline is subject to change, but it indicates that owners should not anticipate an immediate fix.

Technical Background

Audi has identified the root cause of the intermittently flashing seat heater button and the unavailable seat heating as a software issue within the control unit responsible for the air conditioner and heater electronics. Despite the visible symptom, workshop diagnostics typically show no event memory entries logged in diagnostic address 0008, meaning no specific fault codes are stored related to this condition. The issue can often be temporarily resolved by pressing the button again or cycling the ignition off and on.

Production Solution

Audi plans to implement a production change to address this software issue. Vehicles manufactured after week 25/24 are expected to include air conditioner software version 5067, which should prevent the Audi S3 seat heater button flashes problem from occurring. This indicates a long-term fix integrated into the manufacturing process for future vehicles.

What Owners Should Do

If you experience the seat heater button flashing in your 2025-2026 Audi A3 or S3, there is no immediate action required on your part beyond noting the symptom. Since a solution is not expected until the third quarter of 2025, Audi advises against attempting any repairs or component replacements at this time. Your Audi dealer will be instructed to create a Pending Service Solutions (PSS) record in their system to document the concern. This TSB is informational and does not apply to any Audi Warranty claims, as it describes an ongoing issue with a future resolution.

PR Numbers Affected

This issue specifically pertains to vehicles equipped with PR numbers 4A3 or GP1, which relate to specific equipment configurations for the seat heating system.

Source: NHTSA ID: 11017633, Transaction No. 2077639/1