2023-2024 Audi MLB evo Gateway Software Update TSB

Audi has issued Technical Service Bulletin (TSB) 2078077/2 to address a software-related issue affecting the data bus diagnostic interface, also known as the gateway, in various 2023-2024 Audi MLB evo platform vehicles. This TSB outlines a necessary software update to resolve functional restrictions that can impact several vehicle systems.

Symptoms

Owners might experience functional restrictions related to various vehicle operations. These can include issues with deactivating transport mode, activating the swap function, activating and flashing control units, adapting the 12V battery, and activating the high-voltage system. These problems typically manifest as error messages or general software faulty indications within the control modules and services.

Diagnosis / Trigger Conditions

The need for this software update is typically identified if the vehicle exhibits the aforementioned functional restrictions. Technicians should check the software version of the control unit for information electronics J533 (diagnostic address 0019). If the current software version is 0025, this TSB applies, and the Audi MLB evo gateway update should be performed.

Repair Procedure Summary

The repair involves updating the software for the data bus diagnostic interface J533 (0019) using the SVM (Software Version Management) system via an ODIS tester. The high-level steps are:

1. Preparation: For vehicles with high-voltage components, the high-voltage charging cable must be unplugged before entering the SVM code to prevent damage during the update. The control unit's software version for information electronics J533 (0019) must be 0025 to proceed with this TSB.
2. Software Update: Update the data bus diagnostic interface J533 using the ODIS tester in "Flash" mode. The required SVM code is ZGDOIP,19A025. This code must be entered exactly as written, including the comma and without spaces.
3. Post-Update Steps: After the update is complete, unplug the diagnostic connector and the charger from the vehicle. Start the engine and let it run for one minute, then lock the vehicle and wait for five minutes. Finally, complete the diagnostic procedure via ODIS to clear any event memory entries created during the flashing process.

Required Tools or Parts

This procedure requires an ODIS tester for the software update. The specific SVM code ZGDOIP,19A025 is essential for initiating the flash process. No new hardware parts are typically required, as this is a software-only update.

Owner Action

If you own a 2023-2024 Audi model listed above and are experiencing functional restrictions related to your vehicle's systems, it is recommended to contact an authorized Audi dealership. They can diagnose the issue and perform the necessary Audi MLB evo gateway update under TSB 2078077/2. This software update is typically covered under warranty if the vehicle is within its warranty period. If the vehicle is outside of warranty, the TSB serves as an informational guide.

Source: NHTSA ID 11023784