2022-2024 Audi A3 Radiator Blind Fault Warning TSB

Owners of 2022-2024 Audi A3 models may encounter a warning message in the virtual cockpit related to a radiator blind fault. This issue, addressed by Audi Technical Service Bulletin (TSB) 2074984/2, specifically highlights a software error that causes an incorrect speed limit to be displayed. This bulletin supersedes TSB 90 24-24 dated August 29, 2024.

The primary concern for the Audi A3 radiator blind fault is the misleading information presented to the driver. While the virtual cockpit may show a 10 mph speed limit, the actual vehicle speed limitation is 100 mph.

Symptoms

Drivers may observe the message "Radiator blind: fault. Maximum speed limited to 10 mph. Please contact workshop" appearing in the Audi virtual cockpit. This message typically clears after the ignition is switched off and then on again, but the underlying Audi A3 radiator blind fault persists.

Fault Codes / DTCs

When diagnosing the Audi A3 radiator blind fault, technicians may find one or more of the following Diagnostic Trouble Codes (DTCs) stored intermittently or statically in the engine control unit J623 (diagnostic address 0001):

Diagnosis / Trigger Conditions

The root cause of this issue is a radiator blind fault, coupled with a software anomaly within the Audi virtual cockpit. This software glitch leads to the incorrect display of the maximum speed limit in the warning message.

Important Warnings for Owners

It is crucial for owners to understand that despite the message "Radiator blind: fault. Maximum speed limited to 10 mph. Please contact workshop" displayed in the virtual cockpit, the vehicle's actual maximum speed is limited to 100 mph, not 10 mph. The correct message that should be shown for a radiator blind fault is "Radiator blind: fault. Maximum speed limited to 100 mph. Please contact workshop". The discrepancy is due to a software issue in the virtual cockpit.

Repair Procedure Summary

The repair for the Audi A3 radiator blind fault involves updating the software of the Audi virtual cockpit (diagnostic address 0017). The procedure outlined in TSB 2074984/2 requires specific steps:

1. Check Current Software: First, the technician must determine the current software version installed in the Audi virtual cockpit.
2. Activate DoIP Communication: Before proceeding with the update, Diagnostics over Internet Protocol (DoIP) communication must be activated in the ODIS tester. This is done via "Administration" → "General" → "GFF Process" → option to select communication path → "Only allow DoIP communication". This setting will reset after each diagnostic session.
3. Software Update (Scenario 1): If the virtual cockpit currently has software versions 0212, 0218, 0220, 0222, 0224, 0226, 0228, 0230, 0308, 0310, 0316, 0318, 0320, 5330, 5345, 7340, 7362, 7364, or 7380, the update is performed using SVM code 17A051. The target software version will be 0232, 0322, 5350, or 7390, depending on the installed version and vehicle model year.
4. Software Update (Scenario 2): If the virtual cockpit currently has software version 7370, a two-step update is required. First, update to software version 7380 using SVM code 17A049. Then, perform a second update to software version 7390 using SVM code 17A051.
5. Initiate Update: The update is started on the workshop tester by selecting "flash" and entering the specified SVM code, following the on-screen instructions.

Required Tools or Parts

To perform the software update, a diagnostic interface such as VAS 6154 or VAS 6154A is required for DoIP communication.

Warranty Information

For vehicles still under warranty, this Technical Service Bulletin is informational. The service number is 9025, and the damage code is 0039. Labor operations include 0151 0010 for software update (with associated operations) and 0151 0060 for software update (time stated on diagnostic protocol). The claim comment should reference "As per TSB 2074984/1". All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Owner Action

If you experience the "Radiator blind: fault. Maximum speed limited to 10 mph. Please contact workshop" message in your 2022-2024 Audi A3, it is recommended to contact your authorized Audi dealership. They can diagnose the issue, confirm the presence of the relevant DTCs, and perform the necessary software update to correct the virtual cockpit display and address the Audi A3 radiator blind fault.

Source: NHTSA ID 11012508