2021 Audi e-tron Battery Monitoring Control Module Issue

Audi has released Service Action 93K4 to address a manufacturing issue affecting the Audi e-tron battery monitoring system in certain 2021 models. This communication, issued on May 24, 2021, informs dealers about a necessary repair involving the battery module control unit.

Issue Description

During a specific production period, a process discrepancy occurred where battery module control units were incorrectly interchanged in a small number of Audi e-tron vehicles. The battery monitoring control module is crucial for accurately assessing the health, charge level, and overall performance of the high-voltage battery system. An incorrectly installed or mismatched control unit could lead to inaccurate battery readings or improper management of the battery's functions, potentially impacting vehicle operation and longevity.

What's Being Addressed

Service Action 93K4 specifically targets the replacement of the control unit responsible for battery module monitoring. This ensures that the correct and properly functioning module is installed, restoring the intended performance of the Audi e-tron battery monitoring system. A total of 15 vehicles in the U.S. market are identified as potentially affected: 12 units of the 2021 Audi e-tron Quattro and 3 units of the 2021 Audi e-tron Sportback Quattro.

Repair Procedure Summary

The repair involves replacing the control unit for battery module monitoring. Audi dealers are instructed to refer to ELSA/ServiceNet for comprehensive repair and claiming instructions. This procedure ensures that the vehicle's battery management system operates as designed, providing accurate data and optimal performance for the electric powertrain.

Important Warnings for Owners and Dealers

Audi has issued several key directives regarding this service action:

• "Repair every affected inventory vehicle before delivery to consumers." This means any new or used 2021 Audi e-tron vehicle on a dealer's lot that falls within the affected VIN range must have this repair completed before it can be sold or delivered.
• "Schedule owner repairs immediately." Owners of affected vehicles should arrange for the service action to be performed without delay.
• "Owner mailing – May 2021." Audi planned to notify affected owners via mail in May 2021, informing them of the necessary repair.

How to Check if Your Vehicle is Affected

Owners concerned about this Audi e-tron battery monitoring issue should contact their authorized Audi dealer. Dealers can verify if a specific vehicle's VIN qualifies for this repair by checking the Campaigns/Actions screen within the ELSA/ServiceNet system. Audi explicitly states that "Elsa is the only valid campaign inquiry & verification source."

Owner Action

If you own a 2021 Audi e-tron Quattro or e-tron Sportback Quattro, it is recommended to contact your local Audi dealership to determine if your vehicle is included in Service Action 93K4. This repair will be performed at no cost to the owner.