2021 Audi Engine Coolant Concentration Service Action 19P9

Why This Matters: Risk of Insufficient Coolant Protection

Audi has identified a potential issue with the engine cooling system in certain 2021 Audi A6, A7, S6, and S7 models. Due to a production irregularity, these vehicles may have been filled with an antifreeze concentration rated for a minimum of -25 degrees Celsius, rather than the required minimum of -40 degrees Celsius. This discrepancy means the engine coolant concentration might not provide adequate protection against freezing in extremely cold temperatures.

If the engine coolant freezes, it can lead to severe engine damage, including cracked engine blocks or cylinder heads, and damage to the radiator or water pump. This can result in costly repairs and potential vehicle immobilization. Ensuring the correct engine coolant concentration is crucial for the longevity and reliable operation of your vehicle, especially in colder climates.

What's Being Addressed: Service Action 19P9

Audi's Service Action 19P9 specifically targets this production irregularity affecting the engine coolant concentration. The issue stems from an initial fill that did not meet the specified -40 degrees Celsius protection level. This service action aims to correct the antifreeze concentration to prevent potential damage from freezing.

The affected vehicles include various 2021 Audi A6, A7, S6, and S7 models. This proactive measure by Audi ensures that all affected vehicles receive the necessary adjustment to their cooling system, restoring the intended level of cold weather protection. This specific action is identified as Service Action 19P9.

Repair Procedure Summary

For vehicles identified under Service Action 19P9, the repair involves a straightforward process. Authorized Audi dealers will check the current engine coolant protection level. If the concentration is found to be insufficient, additional coolant concentrate will be added to achieve the required -40 degrees Celsius protection.

Dealers were informed that the repair became available on March 2, 2021. Detailed repair and claiming instructions are available to technicians through Audi's ELSA/ServiceNet system. There will be no specific parts allocation for this service action, as the repair primarily involves checking and adjusting the existing coolant.

Important Warnings and Information

Audi has issued several important directives regarding Service Action 19P9:

• Inventory Vehicles: Dealers are instructed to repair every affected vehicle in their inventory before delivery to consumers.
• Verification Source: The ELSA system is the only valid source for campaign inquiry and VIN verification to determine if a vehicle qualifies for this repair.
• Owner Notification: Audi initiated an owner mailing in March 2021 to inform affected vehicle owners about this service action.
• Prompt Scheduling: Owners are advised to schedule repairs immediately upon notification.

Owner Action

If you own a 2021 Audi A6, A7, S6, or S7, and are concerned about the engine coolant concentration, you should contact your authorized Audi dealer. The repair for Service Action 19P9 became available on March 2, 2021, and is expected to be performed free of charge under warranty. This service action has an expiration date of December 31, 2023, so it is important to address this issue before then. Your dealer can verify if your vehicle is affected and schedule the necessary service to ensure your vehicle has proper cold weather protection.

Source: NHTSA ID 10188613