2021-2023 Audi Q5 e / A7 e Shuddering When Charge Low TSB

Symptoms

Owners of 2021-2023 Audi Q5 e and A7 e models may experience a noticeable shuddering sensation. This condition typically occurs after the vehicle pulls away, specifically when the engine is switched on and the charge level of the high-voltage battery is in the red area. This symptom indicates a potential issue with the E-motor's operation under low charge conditions.

Diagnosis / Trigger Conditions

Audi workshops can reproduce the shuddering complaint. The issue is linked to specific vehicle equipment versions. The TSB 93 24 31 2071340/3 applies if the customer's reported symptom matches and the workshop findings confirm the complaint can be reproduced.

Important Warnings

Preventing Damage During Software Update: To prevent potential damage to high-voltage components, it is critical that the high-voltage charging cable on vehicles with high-voltage components be unplugged before any Software Version Management (SVM) code is entered for the update. Charging the high-voltage battery during a software update can cause severe damage.

Normal Operation After Update: In some rare instances, a slight judder might still be noticeable in certain accelerator pedal positions even after the software update. This is considered normal behavior, as it occurs when the combustion engine switches on. Owners should be aware that it is not necessary to replace any parts if this specific type of judder occurs post-update.

Repair Procedure Summary

This Technical Service Bulletin 93 24 31 2071340/3 outlines software updates for the Hybrid Battery Management control unit (J840) to resolve the Audi Q5 e shuddering charge low issue. The procedure involves using the Software Version Management (SVM) system, following instructions detailed in TSB 2011732: 00 Software Version Management (SVM), operating instructions.

There are two main SVM update options:

SVM Update Option 1 (for specific Q5 TFSIe models):

1. Ensure the high-voltage charging cable is unplugged. This is crucial to prevent damage to high-voltage components.
2. Update the Hybrid Battery Management control unit (J840) using SVM action code 8CA009. This update applies to Q5 TFSIe models with old software part number 4M4915233G (version 0371), updating it to 4M4915233K (version 0373).

SVM Update Option 2 (for other Q5 TFSIe and A7 TFSIe models):

1. Ensure the high-voltage charging cable is unplugged. This step is vital for safety and to prevent component damage.
2. This option requires two SVM codes to be run in a specific order: 8CA011 followed by 8CA011KONF.
3. Update the Hybrid Battery Management control unit (J840), the Battery Junction Box (SX6), and the Cell Module Control units (CMC). For Q5 TFSIe models, this involves updating old software part numbers like 4M0915233R (version 0273) to 4M0915233AE (version 0278), and 4K0915233 (version 0275) to 4K0915233A (version 0278). For A7 TFSIe models, old software part number 4M4915233B (version 0371) is updated to 4M4915233J (version 0373).

Software and Part Numbers

Several software and hardware part numbers are involved in this update, targeting the Hybrid Battery Management system. The TSB specifies the following components and their corresponding software versions:

• Hybrid Battery Management (Address 008C): Hardware part number 4M0915233C, Part number 4M0915233AE, Hardware version H08, Software version 0278.
• Q5 TFSIe (Option 1): Old Software Part Number 4M4915233G (Version 0371) updated to New Software Part Number 4M4915233K (Version 0373).
• Q5 TFSIe (Option 2): Old Software Part Number 4M0915233R (Version 0273) updated to New Software Part Number 4M0915233AE (Version 0278). Also, Old Software Part Number 4K0915233 (Version 0275) updated to New Software Part Number 4K0915233A (Version 0278).
• A7 TFSIe (Option 2): Old Software Part Number 4M4915233B (Version 0371) updated to New Software Part Number 4M4915233J (Version 0373).

Warranty Information

This Technical Service Bulletin is informational only if the vehicle is outside of its warranty period. For in-warranty repairs, the Service Number is 9327 and the Damage Code is 0040. Labor operations for the software update are 0151 0060 and 0151 0010, with time stated on the diagnostic protocol or according to the Service Repair Time (SRT) with associated operations. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual, referencing TSB 2071340/3.

Revision History

This bulletin, identified as 93 24 31 2071340/3, was initially published on September 7, 2023. It supersedes Technical Service Bulletin Group 93 number 24-17 dated September 24, 2024. The latest revision (Revision 3) includes updated service instructions and warranty claim types.

Owner Action

If you experience your Audi Q5 e shuddering charge low, or similar symptoms in an affected A7 e model, you should contact your authorized Audi dealership. They will be able to diagnose the issue and apply the necessary software updates as outlined in TSB 93 24 31 2071340/3. Ensure to mention the specific symptoms you are experiencing.

NHTSA ID: 11011293