2021-2024 Audi 48V System Diagnosis Reference TSB

Audi has issued Technical Service Bulletin (TSB) 2067937, titled "27 48V Reference: diagnosis and system information," to assist technicians with the complexities of the 48V electric system found in many modern Audi vehicles. This TSB, dated September 13, 2022, is purely informational, guiding service personnel to relevant training materials.

Technical Background

The 48V electric system operates differently from the traditional 12V system. To ensure proper understanding and accurate Audi 48V system diagnosis, Audi provides additional training resources. This TSB serves as a directory to these resources, helping technicians bridge the knowledge gap between the two electrical architectures.

Accessing Training Resources

Technicians can access comprehensive 48V system training information through the Audi Knowledge Tank (AKT). The process involves several steps:

1. Log in to AccessAudi and click on "App Links."
2. Navigate to the "Academy site CRC."
3. Once the Audi Academy Certification Resource Center loads, click on "AKT."
4. Complete the login process for the Audi Knowledge Tank.

Recommended Video Content

Within the Audi Knowledge Tank, specific video content is recommended for a thorough Audi 48V system diagnosis. Technicians can find these videos by typing the video code into the search query on the AKT main page.

Key recommended videos include:

• STV_0484: Audi hybrid technology – Overview
• STV_0522: Working on the 48-Volt Mild Hybrid Electric Vehicle
• STV_0524: Working on the 12-Volt Mild Hybrid Electric Vehicle

Market Specific Content (SSP)

In addition to videos, technicians can access Market Specific Content (MSC) or Self-Study Programs (SSPs) related to the 48V system. This content provides in-depth technical details.

To access SSPs:

1. From the AKT main page, click the drop-down menu.
2. Select "MSC" for Market Specific Content.
3. Click the MSC Audi SSP Library.
4. Ensure the MSC tab is highlighted.
5. Type the specific SSP number into the search field to load the document.

Recommended SSPs for 48V system content include:

• SSP 970293: The 2019 Audi A8 Electrics and Electronics
• SSP 990593: The 2019 Audi A7 Introduction
• SSP 990693: The 2019 Audi A6 Introduction
• SSP 990793: The 2019 Audi Q8 Introduction
• SSP 680: Audi A3 (type 8Y)

These resources are vital for technicians performing an accurate Audi 48V system diagnosis and repair.

Important Warnings

Owners should be aware that this Technical Service Bulletin is informational only. It does not apply to any Audi warranty, meaning any diagnostic or repair work performed based on this information would typically fall under standard warranty policies or customer-pay scenarios, not as a direct result of this specific TSB.

Additional Information

All part and service references mentioned in TSB 2067937 are subject to change. Technicians are advised to always consult their Parts Department and/or ETKA for the most current information and parts bulletins. They should also refer to the Repair Manual for details on fasteners, bolts, nuts, and screws that may require replacement during service procedures.

Source: NHTSA ID 10220388