2020-2022 Audi e-tron A/C Sensor Failure Service Action

Audi has initiated Service Action 87H9 to address a potential problem with the air conditioning system in certain 2020-2022 Audi e-tron and e-tron Sportback vehicles. This service action focuses on the pressure and temperature sensors within the A/C system, which may fail and cause the air conditioning to stop functioning entirely. This proactive measure ensures customer satisfaction and vehicle performance.

This service action was originally published on February 13, 2024, with updated claiming instructions issued on February 23, 2024, and April 11, 2024.

Symptoms

Owners of affected 2020-2022 Audi e-tron vehicles may experience a complete failure of the air conditioning system. If the pressure and temperature sensors in the A/C system fail, the system will no longer be able to function, leading to a loss of cooling or heating capabilities from the A/C.

Diagnosis and Trigger Conditions

To diagnose the issue, technicians will inspect the G395 and G826 pressure/temperature sensors located in the under-hood compartment. The inspection involves checking for a green dot on the connector housing of both sensors. If a green dot is present on both sensors, no replacement is required. The production date format for these sensors is week/year; for example, a sensor pictured with a production date of calendar week 31 of 2022 would not require replacement.

If a green dot is not present on either sensor, the technician will check the sensor's production date. Sensors manufactured between calendar week 23 of 2020 and calendar week 30 of 2021 are identified as potentially faulty and will require replacement. Technicians are advised to label the sensors and connectors to prevent accidental swapping, as the connectors for the G395 and G826 sensors can be interchanged. If the production information on the connector is not visible, a mirror can be used to aid in inspection.

Important Warnings and Owner Information

Audi has issued several critical warnings and instructions related to Service Action 87H9:

• Dealer Inventory: Dealers must ensure that every affected inventory vehicle has this campaign completed before delivery to consumers.
• Claiming Restrictions: Dealers should not claim wash/loaner services under this action. Additionally, labor operation 7007 19 00 (storage compartment remove+reinstall) should not be claimed if the sensors are being replaced, as it is included in other labor operations (8709 20 51 and 8764 19 50).
• Critical Repair Step: If multiple software update campaigns or actions are open for a vehicle, they must be performed in order of their start date, with the oldest being completed first. All safety recalls must be completed prior to completing this campaign.
• High-Voltage System Safety: When working near the high-voltage system, extreme caution is required due to the danger of severe or fatal injuries from electric shock. Technicians must perform a visual check of high-voltage components and wiring, avoid cutting/forming tools or sharp-edged implements, and never perform work involving welding, brazing, thermal bonding, or hot air in the area of high-voltage components and cables.
• Refrigerant Handling: There is a danger of frostbite due to refrigerant coming out under pressure. Technicians must wear safety gloves and protective eyewear, and evacuate or drain refrigerant immediately. If more than 10 minutes elapse after extracting or draining refrigerant without opening the circuit, the refrigerant must be extracted or drained again due to pressure buildup. The power-activated valves in the refrigerant circuit must be opened through ODIS per ELSA prior to refrigerant recovery.
• Sensor Connector Caution: The connectors for the G395 and G826 sensors can be swapped. Technicians must ensure that the connectors are reinstalled in their correct locations if removed.
• Reassembly: The front luggage compartment liner and foam insert for tool storage must be replaced after removal during the repair process.
• Campaign Expiration: This campaign expires on September 01, 2028. Work must be performed on or before this date to be eligible for payment. If a customer wishes to have this work performed after the expiration date, normal dealership costs will apply.

Repair Procedure Summary

The repair for the Audi e-tron A/C sensor issue, Service Action 87H9, involves a detailed inspection and, if necessary, replacement of the pressure and temperature sensors. The process begins with checking the vehicle's VIN in the Elsa system to confirm the campaign is