2024-2026 Audi Warning Lamps Instrument Cluster TSB

Owners of 2024-2026 Audi vehicles may experience various warning lamps illuminating in the instrument cluster. This can occur when starting the vehicle or while driving. Audi Technical Service Bulletin (TSB) 2077819/2 details a software update designed to resolve these intermittent electrical system warnings.

This TSB, released on August 1, 2025, supersedes TSB 2075405 and applies to a wide range of Audi models from the 2024-2026 model years. The core problem lies with the data bus diagnostic interface (J533) experiencing sporadic resets, leading to communication faults and the display of an "Audi warning lamps instrument cluster" message.

Symptoms

Owners might observe a variety of warning messages and indicators in the driver information system. These include, but are not limited to:

• "transmission malfunction display"
• "driver assistance malfunction display"
• "shock absorber control system malfunction display"
• "ABS malfunction display"
• "power steering malfunction display"
• "engine start malfunction indicator"
• "interference display for emergency call service"
• "Vehicle lights: fault"
• "Emergency call function: fault"
• "Start/stop system: fault"
• "Stabilization control (ESC): fault"

In some cases, various warning lamps are active, and the side windows may even lower automatically. These symptoms point to an underlying issue with the vehicle's communication systems.

Fault Codes / DTCs

Workshop diagnostics often reveal various intermittent Diagnostic Trouble Codes (DTCs) logged in diagnosis address 0019 (Data Bus OBD Interface). These DTCs indicate temporary failures in the gateway J533 and communication issues across CAN and FlexRay bus systems. The following DTCs may be stored:

Diagnosis and Trigger Conditions

The root cause of the intermittent "Audi warning lamps instrument cluster" issue is a sporadic reset of the data bus diagnostic interface J533. This can be triggered by an online data campaign, causing the interface to become stuck for approximately 30 seconds before automatically resetting. While the complaint cannot always be reproduced easily in a workshop setting, the presence of various DTCs with identical timestamps in the event memory of the data bus diagnostic interface (address 0019) is a key diagnostic indicator.

Important Warnings for Owners and Technicians

Audi has issued several critical warnings regarding this software update:

• "To prevent the high-voltage battery from charging during the software update, the high-voltage charging cable on vehicles with high-voltage components must be unplugged BEFORE the SVM code is entered."
• "Please note that charging the high-voltage battery during a software update can cause damage to the high-voltage components."
• "The software for the diagnostic interface must be updated on this vehicle. Please observe the information and instructions under 'Customer information' regarding this."
• "CAUTION: the following SVM code must be input exactly as written below (incl. commas and without spaces; copying and pasting is recommended): ZGDOIP,19A027,19B027"
• "Damage to the control unit(s) resulting from chip tuning is not covered under warranty."
• If a vehicle has been