2024-2025 Audi Q5 e HV Battery Charger Software Update

Audi has announced a new Service Action, identified as 93SG, to address a software issue affecting the High-Voltage (HV) Battery Charger in certain 2024-2025 Audi Q5 e hybrid vehicles. This action is crucial for owners experiencing specific charging and warning light problems. The core issue stems from overly sensitive diagnostic software within the vehicle's charging system.

This service action ensures that your Audi Q5 e battery charger functions correctly and provides accurate information. The repair, a software update, became available on October 29, 2024, and is being rolled out to affected vehicles.

Symptoms You Might Notice

Owners of affected 2024-2025 Audi Q5 e models may observe an "erroneous warning message" appearing in the instrument cluster. This message indicates a problem with the high-voltage battery charging system. Accompanying this warning is a "fault stored in the control unit for high-voltage battery charging."

Critically, this issue can also lead to a functional problem: the vehicle "prevents charging at 100% with a 110V cable." This means that even if you connect your Audi Q5 e to a standard household outlet, the battery may not reach its full charge capacity, impacting your vehicle's electric range.

The Underlying Problem

The root cause of these symptoms is overly sensitive diagnostic software within the high-voltage battery charging control unit. This software incorrectly detects an issue, triggering the warning message and imposing the charging limitation. It's not a hardware defect, but rather a calibration or logic error in the software that manages the Audi Q5 e battery charger.

The Solution: Software Update

To resolve these issues, Audi is implementing a software update. This update will recalibrate the diagnostic software, preventing the erroneous warning messages and allowing the high-voltage battery to charge to 100% capacity when using a 110V cable. The repair procedure involves flashing new software to the relevant control unit.

Audi dealers will use instructions found in ELSA and Elsa2Go for complete repair and claiming procedures. This ensures that the update is performed correctly and efficiently. The service action, 93SG, is designed to be a straightforward software reflash.

Important Information for Owners

Audi has identified a total of 9,410 vehicles in the USA and 162 in Canada that are affected by this service action. These include 2024-2025 Audi Q5 HYBRID models. Audi is taking steps to ensure all affected vehicles are updated promptly.

Dealers have been instructed to "repair every affected inventory vehicle before delivery to consumers." This means any new 2024-2025 Audi Q5 e on a dealer lot that is subject to Service Action 93SG will receive the software update before it is sold. Owner mailings regarding this service action are scheduled for November 2024. Additionally, loaner or rental vehicle coverage may be available; owners should inquire with their dealer for details.

What Owners Should Do

If you own a 2024-2025 Audi Q5 e and have experienced an "erroneous warning message" related to battery charging or are unable to charge to 100% with a 110V cable, you should contact your authorized Audi dealer immediately to schedule the necessary software update. Even if you haven't noticed these specific symptoms, it's advisable to check if your vehicle is covered under Service Action 93SG to ensure your Audi Q5 e battery charger operates optimally.

Source: NHTSA ID 11009993