2022-2024 Audi A3/S3/RS3 Radiator Blind Fault TSB

Symptoms

Owners of 2022-2024 Audi A3, S3, and RS 3 vehicles may observe a specific message in the instrument cluster: "Radiator blind fault Maximum speed limited to 10 mph. please contact workshop." This message indicates a potential issue with the radiator blind system and imposes a significant speed restriction on the vehicle. In some cases, the vehicle's maximum speed limit may incorrectly display as 10 mph instead of the intended 100 mph.

Fault Codes (DTCs)

When this condition occurs, the Engine Control Module (ECM), specifically J623 (address word 0001), may store one or more of the following Diagnostic Trouble Codes (DTCs):

These codes indicate issues with the radiator blind's operation or communication, contributing to the "Radiator blind fault Maximum speed limited to 10 mph" message.

Diagnosis

Technicians should first connect to the vehicle's diagnostic system to confirm the presence of the listed DTCs in the ECM. If no fault is found with the component using Guided Fault Finding (GFF), the memory entry can be deleted. It's important to note that this issue is often related to an engine control unit problem, and the complaint may sometimes resolve after simply cycling the ignition off and on again.

Important Warnings for Owners

Audi has issued specific guidance regarding this issue under TSB 2073088/2. Owners should be aware of the following critical information:

• Do not replace components: Audi explicitly states, "Do not replace any components for this condition since this will not resolve the customer's concern." This means that replacing parts like the radiator blind or related modules will not fix the underlying problem and should be avoided.
• Solution expected: A permanent solution from Audi is "expected to be available by the end of the 1st quarter of 2025 (subject to change)." This indicates that the current issue is a known software or design anomaly that will be addressed in a future update.
• Temporary fix: "In many cases, the complaint is fixed after an ignition cycle." If you encounter the "Radiator blind fault" message, turning the vehicle off and on again may temporarily clear the warning and restore normal operation.
• Speed display discrepancy: The maximum speed limit displayed may incorrectly show 10 mph instead of 100 mph. Refer to TSB 2074984 for more information regarding this display issue.

Repair Procedure Summary

For the 2022-2024 Audi A3, S3, and RS 3 models, the primary action for technicians under TSB 2073088/2 is to document the occurrence. If a customer reports the "Radiator blind fault Maximum speed limited to 10 mph" message, and the associated DTCs are found, technicians are instructed to create a Pending Service Solutions (PSS) record. This is done through the PSS application via the AccessAudi portal. The TSB emphasizes that no physical repairs or component replacements are to be performed at this time, as the issue is an engine control unit problem awaiting a future resolution.

Warranty Information

This Technical Service Bulletin is informational only if the vehicle is outside of its warranty period. For in-warranty claims, the Service Number is 1935, and the Damage Code is 0016. Labor operations include GFF 0150 0010 and GFF 0150 0060, with the claim comment referencing TSB 2073088/2. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

NHTSA ID: 11012480