2023-2025 Audi 'SAFE CP' Warning TSB 2073601/5

Owners of certain 2023-2025 Audi Q7, SQ7, Q8, SQ8, RS Q8, A4, A5, S4, S5, RS 5, e-tron GT, and RS e-tron GT models may experience a "SAFE CP" warning message in their instrument cluster. This issue is detailed in Audi Technical Service Bulletin (TSB) 2073601/5, which supersedes previous bulletins 57 24 47 and PSS 2072587.

This TSB specifically addresses a software problem within the Comfort System Control Module (J393, diagnostic address 0046) that can lead to the "SAFE CP" warning and related diagnostic trouble codes.

Symptoms

Owners will notice the message “SAFE CP” appearing in the instrument cluster. This warning may be accompanied by other various messages, indicating a potential issue with component protection or related systems.

Fault Codes / DTCs

Technicians investigating the Audi 'SAFE CP' warning 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), 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 'SAFE CP' warning and associated DTCs is identified as a software issue within the Comfort System Control Module (J393, diagnostic address 0046). This software anomaly can incorrectly trigger component protection messages and related fault codes.

Important Warnings

• This TSB does not apply if the DTC "U110100: component protection active” is logged in the Gateway (diagnostic address 0019) and/or in the Comfort System Control Module (diagnostic address 0046).
• During the software update procedure, the vehicle's key must be placed on the emergency reader coil.

Repair Procedure Summary

The repair for the Audi 'SAFE CP' warning involves updating the software of the Comfort System Control Module (J393, diagnostic address 0046). The general procedure outlined in TSB 2073601/5 includes:

1. Following the instructions provided in TSB 2011732: 00 Software Version Management (SVM) for operating software updates.
2. Updating the J393 control unit (diagnostic address 0046) using the specific SVM action code provided in the TSB.
3. After the software update, performing a bus sleep cycle. This is achieved by turning the key off and allowing the vehicle to sit for a few minutes to ensure the module resets properly.
4. If DTC C115E54 is stored after the update, basic settings for the inertial sensors must be performed. It is not necessary to perform test plans for faults in the Chassis Control with Air Suspension (-J774-).

Required Tools or Parts

The software update requires specific software versions and part numbers for the Comfort System Control Module (J393). The SVM code input for the update is 46A034.

For A4, A5, Q7, and Q8 models:

• Old Software Part Number: 8W1.907.064.*
• Old Software Version: 0627, 0628
• New Software Part Number: 8W1.907.064.EA
• New Software Version: 0630

For e-tron GT models:

• Old Software Part Number: 992.907.064.*
• Old Software Version: 0627, 0628
• New Software Part Number: 992.907.064.EA
• New Software Version: 0630

Warranty Information

This Technical Service Bulletin 2073601/5 specifies a Service Number of 5789 and a Damage Code of 0039. Labor operations for the software update include 0151 0060 (software update with DTC check), 0151 0010 (software update), and 0689 0199 (Vehicle Check for data bus sleep mode). If the vehicle is outside of warranty, this TSB is for informational purposes only, and charges may apply.

Owner Action

If your Audi is displaying the "SAFE CP" warning or you suspect your vehicle is affected by the issues described in TSB 2073601/5, it is recommended to contact an authorized Audi dealership. They can diagnose the issue, confirm if your vehicle is covered by this TSB, and perform the necessary software update to resolve the problem.

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Source: NHTSA ID: 11007318