2021-2024 Audi e-tron Mobile Charger Tips for 110V/240V

This Technical Service Bulletin (TSB 93 22 79 2059257/3) from Audi provides important guidelines for owners of 2021-2024 Audi e-tron models regarding the proper use of their Audi e-tron mobile charger with both 110V and 240V household outlets. Understanding these tips is crucial for ensuring efficient and reliable charging of your electric vehicle.

The TSB, originally published on June 12, 2020, and revised on August 4, 2022, supersedes a previous bulletin (Group 93 number 22-72 dated May 19, 2022). It clarifies the conditions and settings necessary for optimal charging performance, addressing common issues that might prevent your Audi e-tron mobile charger from functioning as expected.

TSB Revision History

This bulletin has undergone several revisions to include additional models and clarify charging conditions:

• Revision 3 (August 4, 2022): Revised header to include Q4 and A8 PHEV models, and added model years 2023 and 2024.
• Revision 2 (May 19, 2022): Revised the condition section, specifically updating the verbiage for 240V outlets and Figure 1. This revision also added e-tron GT vehicles, Q5 PHEV, and A7 PHEV to the header.
• Revision 1 (June 12, 2020): Initial publication of the bulletin.

Important Warnings for Owners

Audi has highlighted several critical points to ensure proper charging and prevent unexpected issues:

• "The Mobile Charger rate must be set to 50% charge rate if any of the above criteria are not met." This refers to specific electrical requirements for 240V outlets, emphasizing that if the conditions for 100% charging are not met, the charger must be manually set to 50%.
• If the Audi mobile charger is set to a 50% charge rate when using a 110V outlet, "most vehicles will not charge." Owners must ensure the 100% charge rate is selected for 110V outlets.
• If the charge rate is not adjusted after a previous low-amperage session, "the vehicle will not charge at the rate you are expecting." This is due to the charger's "last mode" feature, which remembers the previous setting for each outlet type.
• "For charging to function under all conditions, make sure any open Campaigns or Service Actions that could affect charging have been performed (for example 57H3, 93G1, 93L9, 93N6 and 93H6)." These service actions are crucial for ensuring full charging functionality.

Understanding Your Audi Mobile Charger

The Audi mobile charger is designed to provide flexible charging options using standard household outlets. Proper setup and understanding of the charger's settings are essential for optimal performance.

Using a 110V Outlet

When charging your Audi e-tron using a standard 110V outlet, ensure the following conditions are met:

• The electrical outlet must be rated at 15 amps or greater.
• The outlet and its associated wiring must be installed in accordance with the National Electrical Code (NEC, NFPA 70) standards.
• The Audi mobile charger must be set to a 100% charge rate. If the charger is set to a 50% charge rate, most vehicles will not initiate charging.

Using a 240V Outlet

For faster charging with a 240V outlet, it is critical to know the amperage capacity of the circuit to correctly set the charging rate percentage. The mobile charger can be used at a 100% charge rate if the following criteria are met:

• Circuit Breaker: A 50 Amp circuit breaker is required.
• Voltage: The outlet must provide Single Phase, 208-240 Volts, 60 Hertz.
• Outlet Type: A high-quality, Industrial Grade NEMA 14-50 receptacle is necessary.
• Conductors: 6 AWG (American Wire Gauge) copper wiring is recommended. Upsized wiring may be required for installations exceeding 150 feet from the electrical panel.
• Weather Protection: For outdoor installations, a NEMA 3R (or higher) weather-resistant enclosure must be installed.
• Ventilation: Follow all local building and electrical codes regarding ventilation.
• Service Disconnect and Ground Fault Circuit Interrupter (GFCI): These components must also comply with local building and electrical codes.

If any of these criteria for 100% charging are not met, the Audi mobile charger rate must be manually set to 50% to prevent electrical issues or charging failures.

How to Change the Charge Rate

The Audi mobile charger features a "last mode" function, meaning it remembers the last charge rate setting (50% or 100%) for each respective outlet type (110V or 240V). To adjust the charge rate:

1. Locate button "1" on the mobile charger, as shown in Figure 1 of the TSB.
2. Press and hold button "1" for approximately 3 seconds.
3. The charge rate will toggle between 50% and 100%. Release the button once the desired rate is displayed.

This adjustment is crucial, especially if you've previously charged on an outlet with limited amperage (e.g., 240V with less than 50 amps at 50% charge rate) and then switch to a 50 amp 240V outlet at home. You must manually switch the rate to 100% for optimal charging.

Warranty Information

This Technical Service Bulletin (TSB) is provided for informational purposes only and does not apply to any Audi warranty claims. Owners will not be reimbursed for costs associated with following these guidelines unless specifically covered by a separate warranty or service campaign.

Additional Resources

For further information, owners and technicians can refer to the "Home HV Charging Quick Start Guide," which is attached to the TSB in ELSA (Audi's electronic service information system). It is always recommended to check with your Parts Department and/or ETKA for the latest information on parts bulletins and to consult the Repair Manual for specific fastener requirements.

NHTSA ID: 2059257/3