2021-2025 Audi A3/S3/RS3/Q3 Tire Pressure Warning

Audi has issued Technical Service Bulletin (TSB) 2075088/1 to address a specific concern where a "tire pressure warning" appears in the instrument cluster of certain 2021-2025 Audi A3, S3, RS3, and Q3 models. This warning occurs even when there is no actual loss of tire pressure, leading to unnecessary concern for drivers. This TSB provides essential guidance for technicians on accurately diagnosing and effectively resolving this particular issue, ensuring that owners searching for "Audi tire pressure warning" can find relevant and actionable information.

Symptoms

Owners of the affected Audi vehicles frequently report seeing a persistent or recurring "tire pressure warning" message displayed prominently in the instrument cluster. A key characteristic of this problem is that the warning appears despite all tires maintaining their correct and recommended pressure levels. Furthermore, the warning often reappears shortly after the tire pressures have been manually reset or stored within the vehicle's system, indicating an underlying fault rather than a genuine pressure drop. This intermittent or constant false "Audi tire pressure warning" can be both confusing and inconvenient for drivers.

Fault Codes / DTCs

When this condition is present, diagnostic scans performed by workshop technicians typically reveal Diagnostic Trouble Codes (DTCs) that are directly related to the tire pressure warning. These DTCs are stored specifically within the Anti-lock Braking System (ABS) control unit. Although TSB 2075088/1 does not list specific DTCs by their alphanumeric codes, it confirms that the presence of these codes signifies an anomaly within the tire pressure monitoring system, triggered by the distorted signals from the ABS sensors.

Diagnosis and Trigger Conditions

The technical background detailed in TSB 2075088/1 provides a clear explanation for the occurrence of the false "tire pressure warning." The primary cause is identified as the accumulation of dirt, foreign objects, or grease on the ABS speed sensors or their corresponding sensor rings, which are located on the wheel bearings. Such contamination leads to distorted signals being transmitted by the ABS speed sensors. This signal distortion prevents the vehicle's tire pressure monitoring system, which relies on ABS sensor data, from accurately adapting tire pressure readings after they have been stored. Consequently, the erroneous warning message reappears after the vehicle has been driven for a short distance.

Repair Procedure Summary

The recommended service procedure outlined in TSB 2075088/1 for resolving the "Audi tire pressure warning" involves a meticulous inspection and thorough cleaning of the implicated components. Technicians are instructed to carefully examine both the ABS speed sensors and the sensor rings located on the wheel bearings for any signs of foreign objects, excessive grease, or accumulated dirt. It is crucial that all identified contaminated components are meticulously cleaned to restore proper signal transmission. Following this comprehensive cleaning process, any Diagnostic Trouble Codes (DTCs) related to the tire pressure warning that are stored in the ABS control unit must be erased to clear the system. The TSB notes that no production changes have been implemented to address this issue, meaning the solution focuses on maintenance and cleaning rather than component replacement.

Important Warnings for Owners and Technicians

Audi has included a critical "NOTICE" within TSB 2075088/1, emphasizing that this repair should only be performed under specific conditions. Technicians must first successfully reproduce the customer's reported complaint and ensure that all specified criteria, including the exact model, year, chassis number, engine type, and other vehicle-specific details, are precisely met. Failure to confirm these conditions before proceeding with the repair may result in the problem persisting or recurring, leading to repeat service visits. Furthermore, Audi explicitly states that in such instances, they reserve the right to reject warranty claims and charge back the cost of any parts or labor involved. This highlights the importance of accurate diagnosis before undertaking the cleaning procedure.

Warranty Information

For dealerships processing warranty claims related to this Technical Service Bulletin, Audi of America (AoA) has provided specific accounting instructions. The service numbers designated for this repair include 4526 for the front sensor ring, 4527 for the rear sensor ring, 4511 for the front speed sensor, and 4515 for the rear speed sensor. The appropriate damage code to be used when submitting these warranty claims is 010. This ensures proper tracking and reimbursement for the service performed.