2021-2022 Audi A/C Compressor Replacement TSB

Why This Matters

Audi Technical Service Bulletin (TSB) 87 21 16 2041717/7, issued on September 14, 2021, specifies a mandatory procedure for all A/C compressor replacements across various 2021-2022 Audi models. This TSB supersedes an earlier bulletin, Group 87 number 19-91, dated June 21, 2019.

The core requirement is that any A/C compressor replacement, regardless of the initial reason for failure, must include an ODIS GFF cooling performance test plan. This test, specifically the Function Test Log version, must be performed and documented, including the recovered refrigerant volume. This ensures proper diagnostic steps are followed for any Audi e-tron A/C compressor replacement.

Important Warnings

This bulletin emphasizes that the variation in test plan location within the ODIS system does not waive the requirement for this test plan to be run before an air conditioning compressor is replaced. If the test plan is missing or cannot be found in ODIS, technicians must file an ODIS Feedback report.

Diagnosis and Trigger Conditions

The ODIS GFF cooling performance test plan is required whenever an A/C compressor is replaced. This test is considered a 'function test' and its location within the ODIS diagnosis program can vary based on the specific vehicle and its equipment level.

For vehicles equipped with 08 - Heating and Air Conditioning Electronics, technicians can navigate to the Guided Functions tab, then select 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, select Body >> Heating / Air Conditioning >> 01 - On Board Diagnostic (OBD) capable systems >> 08 Climatronic control module, functions J255 >> 08-General function tests.

For BEV vehicles with C5 - Thermal Management Control Module, the path is Diagnostic capable system >> 00C5 - Thermal Management Control Module -J1024- >> 00C5 - Thermal management control module, functions >> 00C5 - Basic Setting >> 00C5 - Basic setting complete.

For PHEV vehicles with C5 - Thermal Management Control Module, the navigation is Body >> Heating / Air Conditioning >> 01 - On Board Diagnostic (OBD) capable systems >> C5 - Thermal Management Control Module -J1024- >> 00C5 – Thermal management control module, functions >> 00C5 - Basic Setting >> 00C5 - Basic setting complete.

Repair Procedure Summary

Once an A/C compressor replacement is being performed, the ODIS GFF test plan must be executed. The general steps are as follows:

1. Navigate to the appropriate test plan location in ODIS based on the vehicle type, as outlined in the diagnosis section above.
2. Add the function test to the list of "Tests in current test plan".
3. Select the option "Vehicle is not cooling" to proceed with the specific test.
4. Complete the cooling system performance test plan by following the prompts within the ODIS system.
5. If the A/C performance test returns "No malfunctions", then no further repairs are needed, as the system is operating properly.
6. If the A/C performance test returns a malfunction, further diagnosis and repair of the system are required. If the compressor is found to be faulty and is replaced, specific documentation steps must be followed:
   • Upload a final protocol of the Diagnostic Log to GFF Paperless.
   • Print out and attach the "Function Test” version of the diagnostic log to the replaced compressor for return to the WPRC. It is not necessary to print and attach the complete diagnostic log; only the test plan section is required.

This procedure ensures proper verification of the repair, especially for an Audi e-tron A/C compressor.

Warranty Information

Warranty claims related to this procedure are handled under specific conditions:

• Claim Type: 110 for vehicles up to 48 months or 50,000 miles. For CPO (Certified Pre-Owned) covered vehicles, use G10, and owner verification is required.
• If the vehicle is outside of any warranty, this Technical Service Bulletin is for informational purposes only.
• Service Number: 8734
• Damage Code: 0016
• Diagnostic Time: GFF, with a labor operation code of 0150 0000. The time stated on the diagnostic protocol (maximum 100 Time Units) will be used.
• No allowance is provided for road tests prior to or after the service procedure (0 TU).
• Claim Comment: Claims must include "As per TSB #2041717/7".

All warranty claims must comply with the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

Additional Information

Another Technical Service Bulletin, TSB 2035582, titled "87 A/C compressor replacement," may be necessary to complete this procedure. This related TSB provides information on required documentation for recovered refrigerant volume for models up to and including MY2017.

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Source: NHTSA ID: 102041717