2021-2022 Audi Air Suspension Malfunction Warning TSB

Symptoms of an Air Suspension Malfunction

Owners of affected 2021-2022 Audi models may notice an "Air suspension malfunction warning" displayed in the instrument cluster. This warning is typically accompanied by a specific symbol for the air spring, indicating a problem with the vehicle's adaptive suspension system. This Audi e-tron air suspension warning can point to various underlying electrical or communication issues within the suspension components.

Fault Codes (DTCs)

When an air suspension malfunction occurs, one of the following Diagnostic Trouble Codes (DTCs) may be stored in the suspension control module (J1135 or J775, address word 0074):

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

Both DTCs are associated with symptom code 262400 and relate to the suspension control module J1135 or compressor control unit J1135, indicating a communication problem or a missing message.

Diagnosis and Trigger Conditions

Technicians will first check for any irregularities in the wiring and connector contacts between the suspension control module (J775) and the compressor control module (J1135). This initial inspection helps rule out simple connection issues that could trigger the Audi e-tron air suspension warning.

Repair Procedure Summary

The repair procedure depends on the nature of the stored DTC:

1. Passive/Sporadic DTC: If the DTC is found to be passive or sporadic (meaning it occurred intermittently and is not currently active), the technician will simply delete the DTC from the system and release the vehicle.
2. Active/Static DTC: If the DTC is active or static (meaning the fault is continuously present), the compressor control unit J1135 will need to be replaced. This replacement should be performed according to the detailed instructions found 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."

The labor operations involved include removing and reinstalling the control module, along with road tests before and after the service procedure.

Required Tools or Parts

For repairs involving the replacement of the compressor control unit, the following parts may be required:

• Level Control System Compressor Electronics J1135: One unit, if necessary.
• Fasteners, Bolts, Nuts, and Screws: As needed, per the ETKA/ELSA Repair Manual.

Technicians are advised to consult the Parts Department and/or ETKA for the latest information on parts and bulletins.

Warranty Information

This Technical Service Bulletin outlines specific warranty claim types:

• Standard Warranty: Repairs are covered for up to 48 months or 50,000 miles.
• CPO Covered Vehicles: For Certified Pre-Owned vehicles, the claim type is G10, and ownership verification is required.
• Informational Only: If the vehicle is outside of any applicable warranty, this bulletin serves as informational guidance only, and costs would typically be borne by the owner.

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Revision History

This bulletin, 43 21 53 2059363/2, dated August 12, 2021, supersedes Technical Service Bulletin Group 43 number 20-34, dated April 28, 2020. The revision updated the header to include additional model years.

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Source: NHTSA ID: 10200437