2021-2026 Audi High-Voltage Battery Abnormal TSB 2079520/1

Audi has released Technical Service Bulletin (TSB) 2079520/1 to provide essential information regarding the handling of damaged high-voltage batteries. This bulletin is crucial for dealerships to ensure that any Audi high-voltage battery abnormal condition is processed correctly and safely, adhering to stringent safety and quality requirements. The TSB outlines procedures and references for various aspects of high-voltage battery management.

What This TSB Addresses

This TSB, identified as Transaction No. 2079520/1, specifically addresses situations where a High-voltage battery classified as abnormal is identified. This condition can manifest through issues related to the vehicle's power supply, electrical system, or data transfer, often resulting in error messages displayed via control modules or services. The primary focus is on providing a structured approach to manage damaged high-voltage batteries.

Why This Information Matters: Technical Background

The technical background of TSB 2079520/1 emphasizes the importance of additional documentation for dealerships. This ensures that the complex process of handling high-voltage batteries, particularly when they are classified as abnormal, is carried out safely and effectively. The goal is to standardize the process, ensure thorough documentation, and maintain high safety and quality standards throughout the procedure. This service information aims to provide a structured approach for processing damaged lithium-ion batteries.

Important Warnings for Owners and Technicians

Owners and technicians should be aware of several critical points outlined in this TSB:

• Future Implementation Date: The processes and documents described in this TSB will not be implemented and available to use in Audi systems until 10/29/2025. This means that while the information is released, the official system integration for these procedures is future-dated, and technicians should consult current systems for active procedures.
• Warranty Exclusion: This TSB is informational only and not applicable to any Audi Warranty. This implies that any work performed under the guidance of this TSB may not be covered by standard warranty provisions, and customers should inquire about potential costs.
• Ongoing Updates: Due to the complexity of the topic, Audi anticipates continuously adding more documents to this TSB. Therefore, complete documentation for all models may not always be immediately available, requiring technicians to stay updated with the latest releases.
• Parts and Service References: All part and service references provided in this TSB (2079520/1) are subject to change and/or removal. Technicians must always check with their Parts Department and/or ETKA for the latest information and parts bulletins. It is also crucial to check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during repair procedures.

Comprehensive Documentation for Damaged High-Voltage Batteries

TSB 2079520/1 serves as a central reference point, linking to numerous detailed documents that cover various aspects of handling an Audi high-voltage battery abnormal situation. These attachments provide in-depth guidance for technicians:

General Information and Processing Guidelines

These documents offer foundational knowledge and recommendations for addressing damaged high-voltage batteries. They include general information on processing damaged lithium-ion batteries, ensuring technicians understand the specific characteristics and hazards associated with these power sources. Key documents in this category include basic_information_on_processing_damaged_lithium-ion_batteries.pdf and basisinformation_havarie.docx, which provide essential background and recommendations.

Personal Protective Equipment (PPE) Requirements

Given the inherent risks of working with high-voltage systems, specific guidelines for personal protective equipment are crucial. The TSB references documents like ppe_instructions.pdf, ppe_instruction.docx, ppe_table.pdf, tabelle_psa.xlsx, and unterweisung_psa.docx. These resources provide recommended briefings for Category III personal protective equipment, detailing the protective functions and requirements for various PPE items necessary when handling damaged high-voltage batteries.

Workshop Procedures and Flow Plans

To ensure a standardized and safe approach, the TSB includes documents outlining typical workshop procedures. The workshop_flow_plan_high-voltage_vehicles_v1.21.pdf provides a diagram illustrating the steps involved in processing high-voltage vehicles, along with the necessary qualification requirements for technicians. This helps ensure that all work is performed consistently and safely, minimizing risks associated with high-voltage battery handling.

Vehicle-Specific Damage Assessment Catalogues

For accurate assessment and processing, the TSB refers to example catalogues tailored for specific Plug-in Hybrid Electric Vehicles (PHEVs) and Battery Electric Vehicles (BEVs). These catalogues, such as comparison_sample_catalogue_a5_a6_q5_e-hybrid_q7_q8_tfsie.pdf, comparison_sample_catalogue_e-tron_gt.pdf, comparison_sample_catalogue_q4.pdf, and comparison_sample_catalogue_q6_a6_e-tron.pdf, provide aids for assessing damage to high-voltage batteries across different Audi models. They are crucial for technicians to identify specific characteristics and potential issues related to various vehicle platforms.

Additional Technical Resources

Beyond the attached documents, the TSB also points to other valuable resources for technicians:

• Service TV Updates: Several Service TV updates are referenced, including 0815_HVE update: introduction, 0816_HVE update: classification, 0817_HVE update: moisture, and 0818_HVE update: thermal event. These updates likely provide video-based training and detailed explanations on various aspects of high-voltage battery handling, covering topics from initial introduction to specific event classifications like moisture intrusion or thermal events.
• Vehicle-Specific Workshop Manuals: Information on Flushing processes for high-voltage batteries can be found in vehicle-specific Workshop Manuals, offering further detailed instructions for service procedures that may be required after certain types of battery damage or events.

Applicable PR Numbers

This TSB is relevant for vehicles equipped with specific PR numbers, indicating particular configurations or options related to the high-voltage system. These include vehicles ?:with 0K9, ?:or?:with G1X, ?:or?:with G1Z, and ?:or?:with 0K3. Technicians should verify these PR numbers to confirm applicability to a specific vehicle.

NHTSA ID

This information is based on NHTSA ID: 11025249.