2021-2022 Audi A4/A5 Suspension Warning Light TSB

Symptoms

Owners of affected Audi A4 and A5 vehicles may observe a specific warning message on their instrument cluster. The primary symptom is the "warning light for the suspension comes on in the instrument cluster." This indicates a potential issue with the vehicle's suspension system.

Diagnosis and Trigger Conditions

Audi Technical Service Bulletin (TSB) 43 21 48 2059665/2 identifies the root cause of the suspension warning light. During diagnostic procedures, specifically when performing a "Check control unit configuration," the Software Version Management (SVM) system may report an unknown event. This unknown event prevents the suspension control module, designated as J775 (address word 0074), from being automatically parametrized. This configuration error is what ultimately triggers the "Audi A5 suspension warning light" on the dashboard.

Repair Procedure Summary

The resolution for the suspension warning light involves a software update to the J775 suspension control module. Technicians must follow the instructions detailed in TSB 2011732, which covers the 00 Software Version Management (SVM) operating procedures. The update process requires using a specific SVM action code, such as 74A005, to ensure the correct software is installed.

The update targets existing software part numbers like 8W0907777R and 8W0907777T, updating them to the latest available versions, such as version 1215. New ZDC (Zero-Deviation Calibration) versions, including 8W0909576VC, 8W2909576VC, and 8W5909576VC, are also part of this update. Once the software update is complete, a new adaptation process for the suspension control module is required to finalize the repair and ensure proper system function.

Warranty Information

This repair, outlined in TSB 2059665/2, is typically covered under Audi's New Vehicle Limited Warranty for up to 48 months or 50,000 miles, whichever comes first. For Certified Pre-Owned (CPO) vehicles, coverage may also apply, but verification of ownership is necessary. The service number for this repair is 4316, with a damage code of 0010. Labor operations for the software update, including checking for Diagnostic Trouble Codes (DTCs), are logged under code 0151 0000, with a maximum of 40 Time Units (TU) allocated. Diagnostic time, including road tests before and after the service procedure, is also accounted for.

Important Warnings

Owners should be aware that if their vehicle is outside of the specified warranty period, this Technical Service Bulletin is for informational purposes only. In such cases, the cost of the software update and adaptation procedure may not be covered by Audi.

Owner Action

If you own a 2021-2022 Audi A4 or A5 and are experiencing the "Audi A5 suspension warning light" on your instrument cluster, it is recommended to contact an authorized Audi dealership. Inform them about the suspension warning light and reference Technical Service Bulletin 43 21 48 2059665/2. The dealership will be able to diagnose the issue and perform the necessary software update to the J775 suspension control module.

Additional Information

This Technical Service Bulletin supersedes Group 43 number 20-37, dated June 1, 2020. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual. Parts and service references are subject to change, and it is always advisable to check with your Parts Department for the latest information.

NHTSA ID: 10197895