2022-2026 Audi e-tron GT Battery Charging Requirements TSB

Audi has released Technical Service Bulletin (TSB) 00 24 96 2069572/3, which details critical battery recovery and charging requirements for 2022-2026 Audi e-tron GT and RS e-tron GT models. This bulletin is essential for maintaining the health of the vehicle's 12V LiFePo starter/auxiliary battery, especially when the vehicle is on the showroom floor or undergoing service or repair. Proper Audi e-tron GT battery charging procedures are crucial to prevent battery drain and potential damage.

Symptoms of Improper Charging

If the specific charging requirements outlined in TSB 00 24 96 2069572/3 are not met, owners or technicians may encounter several issues. These include the starter/auxiliary battery becoming drained or irreversibly damaged. Electronic malfunctions can also occur, particularly when the vehicle is running with only the ignition on. Additionally, the state of charge (SOC) measured by the battery manager may become inaccurate, leading to misdiagnosis of battery health.

Important Warnings for Owners

Audi emphasizes that warranty claims related to a damaged or drained starter/auxiliary battery resulting from the failure to use an appropriately sized battery charger, or not using one at all, may be denied. It is critical to ensure that any service performed on your vehicle adheres to these guidelines.

If the contactors of the 12V battery are open due to a low State of Charge (SoC), it might be necessary to "jump start" the battery charger itself. This involves temporarily touching the charger cable clamps from a 12V source (such as a jump start pack or another 12V battery) to the vehicle's battery terminals for a few seconds until the charger begins its charging process. This step is vital to initiate proper Audi e-tron GT battery charging when the battery is severely depleted.

Technical Background

The Audi e-tron GT is equipped with a LiFePo starter/auxiliary battery, which has a nominal voltage of 13.2V and a capacity of 60Ah. Due to the advanced architecture of the vehicle and its 12V battery technology, specific maintenance and charging requirements are necessary. These requirements apply both during service work and when the vehicle is displayed in a showroom.

Repair Procedure Summary

To ensure the longevity and proper function of the 12V battery, all e-tron GT vehicles must be connected to a 12V battery charger at all times when displayed on the showroom floor or while being serviced or repaired. The charger must meet the following minimum specifications:

• Continuous output current: >= 80A (ideally >= 90A)
• Target charging voltage: 14.8V
• Absolute maximum voltage: 15.5V (any voltage spikes exceeding this limit may damage the battery).

Adhering to these specifications is crucial for effective Audi e-tron GT battery charging and preventing issues.

Required Tools or Parts

Audi recommends specific battery chargers that meet the necessary requirements for the e-tron GT. These include:

• Associated ESS6100: This charger should be used in Diag+ mode, set to a charging voltage of 14.8V.
• Deutronics VAS5908: This charger also requires a 14.8V charging voltage. Technicians may need to release pin 6161 or activate Diag+ mode by pressing and holding the select button if the charger has not been connected to the battery or has not been started.

Owner Action

If you own a 2022-2026 Audi e-tron GT or RS e-tron GT, it is important to be aware of these specific battery charging requirements. If your vehicle is undergoing service, ensure that your Audi service center is following the guidelines outlined in TSB 00 24 96 2069572/3. This will help prevent potential battery issues and ensure your vehicle's warranty remains valid for battery-related concerns. If you experience any electronic malfunctions or suspect battery drain, consult your authorized Audi service center.

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Source: NHTSA ID: 11009922