2010-2026 Audi A/C Compressor Test Plan TSB 2041717/14

Audi has released Technical Service Bulletin (TSB) 2041717/14, which outlines a mandatory diagnostic procedure for all A/C compressor replacements across a wide range of its models from 2010 to 2026. This bulletin emphasizes the critical need for a specific ODIS GFF cooling performance test plan to be performed whenever an A/C compressor is replaced.

This requirement ensures that technicians accurately diagnose the root cause of air conditioning issues and properly document the repair process. The Audi A/C compressor test plan is a crucial step to prevent unnecessary part replacements and ensure the A/C system functions correctly after service.

Symptoms

Owners of 2010-2026 Audi vehicles might experience various issues related to their air conditioning system that would lead to a compressor replacement. These include:

• The A/C system switch being "functionality -> too difficult to move."
• The A/C compressor experiencing "activation\deactivation functionality -> no function."
• The A/C compressor control having "functionality -> no function."
• A noticeable 'noise' from the air conditioning system when it is active, even if it otherwise operates normally.
• The air conditioning system not cooling sufficiently, or displaying a "MIL and / or electrical error" in the instrument cluster, particularly in vehicles with an HV compressor.

Diagnosis / Trigger Conditions

Any repair that involves replacing the air conditioning compressor requires the use of the ODIS GFF cooling performance test plan. This test plan is mandatory without exception and includes documenting the recovered refrigerant volume. The Audi A/C compressor test plan helps confirm the compressor's condition and guides further diagnosis if needed.

For vehicles with 08 – Heating and Air Conditioning Electronics, technicians will navigate to the Guided Functions tab of the diagnosis program, selecting '08 – Front A/C display control head –E87– >> 08 Heating/Air Conditioning Electronics, functions >> 08-Other Functions'. Alternatively, they can go to the Test plan tab, selecting 'Body >> Heating / Air Conditioning >> 01 – On Board Diagnostic (OBD) capable systems >> 08 Climatronic control module, functions J255 >> 08-General function tests'.

For BEV and PHEV vehicles equipped with a C5 – Thermal Management Control Module, the navigation path is 'Diagnostic capable system >> 00C5 - Thermal Management Control Module -J1024- >> 00C5 - Thermal management control module, functions >> 00C5 – Thermal management – Basic setting >> System function test >> Interior cooling'.

Vehicles with HVAC control in the 09-Vehicle Electrical System Control Module will follow 'Body >> Electrical Equipment >> 01-On Board Diagnostic (OBD) capable systems >> 09-Vehicle Electrical System Control Module J519 >> 09-Electric Central Electric, functions >> 09-Other functions, Air Conditioning test plan'. Once the function test is added, technicians select "Vehicle is not cooling" to complete the performance test plan.

Important Warnings

Repair Procedure Summary

Before replacing an A/C compressor, the ODIS GFF test plan must be run. This test determines if the compressor is indeed faulty or if other components are causing the issue. The TSB 2041717/14 outlines specific scenarios:

• For A/C noise complaints: If the customer reports a 'noise' when the A/C system is active, but it otherwise functions normally, and the root cause analysis points to the compressor, a cooling system performance test plan must still be performed with the original compressor. A final log must be uploaded to GFF Paperless, and an audio/video file confirming the compressor as the noise source must be uploaded to Doc-IT.
• For HV compressor electrical failures: In vehicles with an HV compressor where the A/C system does not cool, and a MIL (Malfunction Indicator Lamp) or electrical error is displayed, but no specific cooling performance test plan is provided by the DTCs, an ODIS test plan for the relevant DTCs must be completed. The results must clearly indicate the HV compressor as faulty, and the log uploaded to GFF Paperless.
• For insufficient A/C cooling: If the cooling performance test concludes that system pressures and evaporator temperatures are within specification, the A/C compressor should not be replaced. If the test reveals an imbalance of cooling, further diagnosis for other components like faulty temperature regulating doors, motors, or vent temperature sensors is required.

If the compressor is confirmed faulty and replaced, technicians must upload a final protocol of the completed test plan to GFF Paperless. They must also attach a printout of only the "Function Test" section of the diagnostic log to the replaced compressor for return to the WPRC, and print a summary report of refrigerant recovery/discharge from the A/C service machine, uploading an image to Doc-IT.

Owner Action

If you are experiencing any of the described A/C issues with your 2010-2026 Audi, it is important to have your vehicle inspected by an authorized Audi service center. Inform the technician about the specific symptoms you are observing. The service center will follow the mandatory Audi A/C compressor test plan outlined in TSB 2041717/14 to accurately diagnose and address the problem.

This Technical Service Bulletin is for informational purposes and is not applicable to any Audi Warranty.

NHTSA ID: 11023734