2021-2026 Audi A3/S3/RS3/Q3 Tire Pressure Warning TSB

Symptoms

Owners of 2021-2026 Audi A3, S3, RS3, and Q3 models may experience a "44 Tire pressure warning in instrument cluster" message, even when there is no actual loss of tire pressure. This false warning can reappear shortly after the tire pressures have been stored or reset in the vehicle's system. The issue is specifically noted as a "tire pressure loss warning display" or "tire pressure information display" activating without cause.

Diagnosis / Trigger Conditions

This persistent Audi S3 tire pressure warning is typically linked to the Anti-lock Braking System (ABS) control unit. Workshop findings indicate that diagnostic trouble codes (DTCs) related to tire pressure warnings are stored in this unit. The technical background explains that if dirt, foreign objects, or grease accumulate around an ABS speed sensor or on the sensor ring of the wheel bearing, the signals from the ABS speed sensor can become distorted. This signal distortion prevents the tire pressure monitoring system from correctly adapting after a reset, causing the warning to reappear quickly.

Repair Procedure Summary

To resolve the false Audi S3 tire pressure warning, technicians should thoroughly inspect the ABS speed sensors and the sensor rings on the wheel bearing. The primary focus is to identify and carefully clean any foreign objects, grease, or dirt from these components. Once all affected dirty components are cleaned, any stored DTCs in the ABS control unit must be erased. This cleaning process aims to restore accurate signal transmission from the ABS speed sensors, allowing the tire pressure monitoring system to function correctly.

Important Warnings for Owners

Audi emphasizes that this repair, identified by TSB 2075088/2, should only be performed if the customer complaint can be clearly reproduced and all specific vehicle criteria (such as model/type, chassis number, engine/motor, gearbox code, PR number(s), part number, software version, and other codes) apply exactly. If the solution is applied to a vehicle that does not meet all criteria, it may not resolve the problem, potentially leading to repeat repairs. In such cases, Audi may reject warranty claims and charge back the cost of parts.

Warranty Information

For warranty claims related to this issue, Audi of America (AoA) provides specific accounting instructions. The relevant service numbers are 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 associated damage code for this repair is 010. Dealers must adhere to Audi's warranty guidelines when submitting claims for this service.

Revision History

This Technical Service Bulletin (TSB) 2075088/2 was initially published on September 6, 2024 (Revision 1). A subsequent Revision 2 updated the header to include additional model years.

Source: NHTSA ID: 11025341