2017-2023 Audi Air Suspension Malfunction Warning TSB

Symptoms

Owners of affected Audi vehicles may notice an "Air suspension malfunction warning" displayed in the instrument cluster. This warning is typically accompanied by a symbol representing the air spring, indicating a problem with the vehicle's adaptive air suspension system. If you see this Audi air suspension malfunction warning, it's important to have your vehicle inspected.

Fault Codes / DTCs

When diagnosing an Audi air suspension malfunction, technicians may find one of the following Diagnostic Trouble Codes (DTCs) stored in the suspension control module, J775 (address word 0074):

Code	Description	Module	Symptom Code
C1260F0	Compressor control unit for adaptive suspension, no communication	J1135	262400
U112100	Data bus, missing message	J1135	262400

These codes point to a communication issue with the compressor control unit for the adaptive suspension.

Diagnosis and Trigger Conditions

Before proceeding with repairs, technicians are instructed to check for irregularities in the wiring and connector contacts between the suspension control module (J775) and the compressor control module (J1135). If no issues are found with the wiring or connectors, further action depends on the nature of the stored DTC.

Repair Procedure Summary

If the DTCs are passive or sporadic, the first step is to delete the DTCs and release the vehicle. This suggests that temporary communication glitches can sometimes trigger the warning without requiring a physical part replacement.

However, if the DTC is active or static, indicating a persistent problem, the compressor control unit J1135 must be replaced. The replacement procedure involves following the detailed instructions provided in the Elsa Repair Manual, specifically under "Chassis >> Suspension, Wheels, Steering >> 43 Self Levelling Suspension >> Air Suspension >> Level Control System Compressor Electronics J1135, Removing and Installing."

Required Tools or Parts

To address the Audi air suspension malfunction, specific parts may be required:

• Level Control System Compressor Electronics J1135: This is the primary component that may need replacement if the DTCs are active/static. Technicians should consult ETKA for the correct part number.
• Fasteners, Bolts, Nuts, and Screws: As needed for the replacement procedure, these should be sourced according to the Repair Manual and ETKA/ELSA.

Warranty Information

This Technical Service Bulletin outlines specific warranty claim types for addressing the Audi air suspension malfunction:

• Claim Type 110: Applicable for vehicles up to 48 months or 50,000 miles.
• Claim Type G10: For CPO (Certified Pre-Owned) covered vehicles, requiring owner verification.
• If the vehicle is outside of any warranty coverage, this Technical Service Bulletin serves as informational guidance only.

The service number for this repair is 4316, and the damage code is 0039. Labor operations include control module removal and reinstallation (4316 1950) and diagnostic time (0150 0000).

Revision History

This bulletin, 43 22 62 2059363/3, dated June 9, 2022, supersedes Technical Service Bulletin Group 43 number 21-53 dated August 12, 2021. The previous revisions primarily involved adding model years to the header.

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Source: NHTSA ID: 10214467