2021-2025 Audi Air Suspension Warning DTC C1260F0 U112100

Owners of various 2021-2025 Audi models may encounter an "Air suspension malfunction warning" displayed in the instrument cluster. This issue is addressed by Audi Technical Service Bulletin (TSB) 2059363/6, which provides diagnostic and repair procedures for the underlying cause.

The TSB details specific diagnostic trouble codes (DTCs) that may be stored in the suspension control module J775 when this warning appears. The primary focus is on ensuring proper communication and function of the air suspension system's components.

Symptoms

The primary symptom owners will notice is the illumination of an "Air suspension malfunction warning in the instrument cluster," typically accompanied by a symbol for the air spring. This indicates a potential problem with the vehicle's air suspension system, which could affect ride height, comfort, and handling.

Fault Codes / Diagnostic Trouble Codes (DTCs)

When the "Air suspension malfunction warning" appears, technicians may find one of the following DTCs stored in the suspension control module, J775 (address word 0074):

| Code | Description | Symptom Code | | :--- | :---------- | | C1260F0 | Compressor control unit for adaptive suspension, no communication | 262400 | | U112100 | Data bus, missing message | 262400 |

These codes point to communication issues or malfunctions within the air suspension system, specifically involving the compressor control unit J1135.

Diagnosis

Diagnosis for the Audi e-tron air suspension warning begins with a thorough check of the wiring and connector contacts between the suspension control module J775 and the compressor control module J1135. Technicians will inspect for any irregularities that could disrupt communication.

If the diagnostic trouble code (DTC) is found to be passive or sporadic, meaning it occurred temporarily and is not currently active, the technician will delete the DTC and release the vehicle. However, if the DTC is active or static, indicating a persistent problem, further action is required.

Repair Procedure Summary

If initial checks of wiring and connectors do not resolve the issue, the repair procedure depends on the nature of the stored DTCs. For an active or static DTC, the compressor control unit J1135 must be replaced. This replacement should follow 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.

Audi TSB 2059363/6 also notes that improved software for the J1135 unit is currently under development, though no specific software update procedure is provided in this bulletin. The repair process involves labor operations such as control module removal and reinstallation, along with diagnostic and road test times.

Important Warnings for Owners

Owners should be aware of a critical detail regarding the Audi e-tron air suspension warning. If either DTC C1260F0 (262400) or DTC U112100 (262400) is stored for a second time in the suspension control unit J775 as passive or sporadic, the compressor control unit J1135 must be replaced. This means even if the code initially clears, its recurrence as a passive fault necessitates a component replacement.

Required Parts and Tools

For the repair of the Audi e-tron air suspension warning, the primary component that may need replacement is the Level Control System Compressor Electronics J1135. Technicians should consult ETKA for the specific part number. Additionally, fasteners, bolts, nuts, and screws, as needed per the repair manual, should be sourced from ETKA/ELSA.

Warranty Information

Warranty claims for this issue are typically covered for vehicles up to 48 months or 50,000 miles, whichever comes first. For Certified Pre-Owned (CPO) vehicles, a G10 claim type applies, requiring verification of owner eligibility. If the vehicle is outside of its warranty period, this Technical Service Bulletin 2059363/6 serves as informational guidance only, and repair costs would be the owner's responsibility.

NHTSA ID: 11002125