2023 Audi e-tron Safe CP Message with DTC U110100

Symptoms

Owners of the 2023 Audi e-tron may observe the message "Safe CP" appearing in the instrument cluster. This message is often displayed alongside other various messages, indicating a potential issue with component protection or related systems.

Fault Codes / DTCs

When the "Audi e-tron Safe CP message" appears, technicians may find one or more of the following diagnostic trouble codes (DTCs) stored in various control units:

• U110100: "Component protection active"
  • Found in: Brake Electronics Control Unit (-J104-, diagnostic address 0003), Electronic Central Electrical (BCM) (-J519-, diagnostic address 0009), Airbag Control Unit (-J234-, diagnostic address 0015), Instrument Cluster (-J285-, diagnostic address 0017), or Control Unit for Night Vision System (-J853-, diagnostic address 0084).
• C115E54: "Inertial sensors no basic setting"
  • Found in: Airbag Control Unit (-J234-, diagnostic address 0015).
• U111800: "Data set missing"
  • Found in: Chassis Control with Air Suspension (-J775-, diagnostic address 0074).

Diagnosis / Trigger Conditions

The root cause of the "Audi e-tron Safe CP message" and associated DTCs is identified as a software issue within the Comfort System Control Module (-J393-, diagnostic address 0046). This software anomaly can lead to the incorrect activation of component protection or related sensor errors.

Important Warnings

• TSB Applicability: This Technical Service Bulletin (TSB 2074876/1) does not apply if the DTC U110100: "component protection active" is logged specifically in the Gateway (diagnostic address 0019) and/or in the Comfort System Control Module (diagnostic address 0046). In such cases, further diagnosis beyond this TSB may be required.
• Update Procedure: During the software update, it is crucial that the vehicle's key remains on the emergency reader coil. Failure to do so could interrupt the update process.
• Post-Update DTC C115E54: In some instances, after the software update, the DTC C115E54: "Inertial sensors no basic setting" may still be statically stored in the Airbag Control Unit (-J234-). If this occurs, technicians should perform the basic settings for the inertial sensors to clear the fault. It is not necessary to perform test plans for faults in the Chassis Control with Air Suspension (-J774-).

Repair Procedure Summary

The resolution for the "Audi e-tron Safe CP message" involves updating the software of the Comfort System Control Module (-J393-). This TSB, identified as 2074876/1, supersedes the previous Pending Service Solution (PSS) TSB 2072587. The procedure is as follows:

1. Technicians must follow the operating instructions provided in TSB 2011732: 00 Software Version Management (SVM).
2. The Comfort System Control Module (-J393-, diagnostic address 0046) is updated using the SVM action code 46A034. The new software version is 0630, replacing the old software version 0627 for part number 8W1.907.064.*.
3. After the software update is complete, a bus sleep cycle must be performed. This involves turning the key off and allowing the vehicle to sit for a few minutes to ensure the module resets properly.
4. If DTC C115E54 persists after the update, basic settings for the inertial sensors in the Airbag Control Unit (-J234-) must be performed to make the fault passive, after which all faults can be deleted.

Required Tools or Parts

The primary requirement for this repair is access to the appropriate diagnostic tools for performing a Software Version Management (SVM) update. No specific physical parts are listed for replacement, as the fix is software-based.

Owner Action

If you are experiencing the "Audi e-tron Safe CP message" or any of the associated DTCs (U110100, C115E54, U111800) in your 2023 Audi e-tron, it is recommended to schedule an appointment with an authorized Audi service center. They have the necessary tools and software to perform the required update and address the issue.

Warranty Information

Warranty claims for this repair are processed under Service Number 5789 and Damage Code 0039. Labor operations include Software Update (0151 0010, 0151 0060) and Vehicle Check (0689 0199). If the vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only, and repair costs may apply.

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Source: NHTSA ID: 11007238