2022-2024 Audi e-tron GT Battery Charging Requirements TSB

Audi has issued Technical Service Bulletin (TSB) 00 23 64 2069572/1, dated March 3, 2023, to address critical battery charging requirements for its 2022-2024 e-tron GT and RS e-tron GT models. This bulletin emphasizes the importance of using appropriate charging equipment to maintain the vehicle's 12V battery system, particularly when the vehicle is on display or undergoing service.

This TSB highlights specific procedures to prevent battery damage and ensure the longevity of the LiFePo starter / auxiliary battery -A- in these advanced electric vehicles. Adhering to these guidelines is crucial for both vehicle performance and avoiding potential warranty claim issues related to battery health.

Why Proper Charging Matters

The Audi e-tron GT is equipped with a LiFePo starter / auxiliary battery -A- that operates at a nominal voltage of 13.2V with a capacity of 60Ah. Due to the vehicle's unique architecture and its advanced 12V battery technology, specific charging requirements are necessary.

If the vehicle's ignition is left on for extended periods, such as when displayed in a showroom, or if the vehicle experiences certain electronic malfunctions, the starter / auxiliary battery can be drained. Without a sufficiently sized and correctly configured charger, this drainage can lead to irreversible damage to the battery.

Symptoms of Improper Charging

Failing to use a battery charger that meets Audi's minimum requirements can lead to several issues. Owners or technicians might observe:

• "Starter / auxiliary battery failure"
• "Starter / auxiliary battery discharge"
• "The state of charge (SOC) measured by the battery manager becomes inaccurate"

These symptoms indicate that the 12V battery system is not functioning correctly, which can impact various vehicle systems.

Important Warnings for Owners

Audi explicitly states that warranty claims related to a damaged or drained starter / auxiliary battery -A- may be denied. This denial can occur if the damage is a direct result of not using a battery charger, or using an inappropriately sized battery charger that does not meet the minimum requirements outlined in TSB 00 23 64 2069572/1.

Owners should ensure that any service facility working on their 2022-2024 Audi e-tron GT or RS e-tron GT is aware of and adheres to these specific charging protocols to protect their vehicle's battery and warranty coverage.

Recommended Charging Requirements

All 2022-2024 Audi e-tron GT vehicles must be connected to a 12V battery charger whenever they are exhibited on the showroom floor or undergoing service or repair. The charger used must meet the following minimum specifications:

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

These specifications are crucial for maintaining the health and proper function of the LiFePo auxiliary battery.

Suggested Charging Equipment

Audi recommends specific battery chargers that meet these stringent requirements. The following chargers are suggested:

• Associated ESS6100: When using this charger, ensure it is set to Diag+ mode with a charging voltage of 14.8V.
• Deutronics VAS5908: This charger should also be set to a charging voltage of 14.8 Volt. Depending on the situation, it might be necessary 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 2022-2024 Audi e-tron GT or RS e-tron GT, it's important to be aware of these Audi e-tron GT battery charging requirements. When your vehicle is taken for service or repair, especially if it will be at the dealership for an extended period or displayed, confirm with the service center that they are following the guidelines outlined in TSB 00 23 64 2069572/1.

This proactive approach can help prevent potential battery issues, ensure accurate State of Charge readings, and safeguard your vehicle's warranty against claims related to battery damage from improper charging.

Warranty Information

This Technical Service Bulletin is informational only and does not directly apply to any Audi warranty claims. However, as noted, failure to follow the recommended charging procedures can lead to the denial of warranty claims for battery-related issues.

---

Source: NHTSA ID: 10232751