2021 Audi Quattro Ultra All-Wheel Drive Malfunction DTC U030000

Symptoms

Owners of affected 2021 Audi Quattro Ultra models may notice an "All Wheel Drive Malfunction Message" displayed prominently in the instrument cluster. This message indicates an issue with the vehicle's all-wheel drive system.

Fault Codes / DTCs

When the "All Wheel Drive Malfunction Message" appears, technicians will typically find the following Diagnostic Trouble Code (DTC) stored in the all-wheel drive control module, J492 (address word 0022):

Code	Description	Status
U030000	Internal Control Module Software Incompatibility	active/static

This DTC, U030000, specifically points to a software mismatch or error within the control module responsible for managing the Quattro Ultra all-wheel drive system.

Technical Background

Audi has identified that the root cause of the "All Wheel Drive Malfunction Message" and the U030000 DTC is a software error within the Quattro Ultra system. This error leads to an internal control module software incompatibility, triggering the warning message and fault code.

Diagnosis

To diagnose this issue, a technician will connect to the vehicle's diagnostic system and check the software version number in the all-wheel drive control module, J492 (address word 0022). They will then compare the installed software part number and version against a table provided in Technical Service Bulletin 39 23 54 2048671/6 to determine if a newer software version is available.

Repair Procedure Summary

The repair for the Audi Quattro Ultra all-wheel drive malfunction involves updating the software of the all-wheel drive control module (J492). The general steps are:

1. Check Current Software: The technician will first verify the current software version installed in the J492 control module.
2. Compare and Confirm: They will compare this version against the latest available software information provided in the SVM (Software Version Management) table within TSB 39 23 54 2048671/6.
3. Perform Software Update: If an update is necessary, the technician will update the J492 control module using the specified SVM action code. This procedure follows the instructions detailed in TSB 2011732, titled "00 Software Version Management (SVM), operating instructions."
4. Road Test: After the software update is complete, a road test is performed to confirm that the repair has resolved the issue and the "All Wheel Drive Malfunction Message" no longer appears.

Required Software Updates and Codes

The following are examples of software part numbers, versions, and SVM codes used for updating the all-wheel drive control module (J492) across various models:

• Hardware Part Numbers: 0CJ927749, 80A927755
• Hardware Version Numbers: H01, 0004
• For A4 allroad (0CJ transmission): Old Software Part Number 8W9927755 (version 0006) to New Software Part Number 8W9927755 (version 0012). SVM Code Input: 22A007.
• For A4/A5 Automatic (0CJ transmission): Old Software Part Numbers 8W6927755A (version 0006) or 8W0927755C (version 0011) to New Software Part Number 8W6927755C (version 0012).
• For A4/A5 Manual (0CX transmission): Old Software Part Numbers 8W0927755 (version 0006) or 8W6927755 (version 0006) to New Software Part Number 8W0927755 (version 0012).
• For Q5 (0CJ transmission): Old Software Part Numbers 80A927755 (version 0006) or 80A927755C (version 0008) to New Software Part Number 80A927755 (version 0012) or 80A927755C (version 0024).
• For A6/A7 (0HL transmission): Old Software Part Numbers 4K0927755C (version 0008), 4K0927755 (version 0008), or 4K0927755A (version 0007) to New Software Part Number 4K0927755C (version 0024), 4K0927755 (version 0024), or 4K0927755D (version 0027).

Important Warnings

Owners should be aware of the warranty implications for this service. "If the vehicle is outside any warranty, this Technical Service Bulletin is informational only." This means that if your vehicle is no longer under warranty, you may be responsible for the cost of the software update.

Warranty Information

This software update for the Audi Quattro Ultra all-wheel drive malfunction is covered under warranty for up to 48 months or 50,000 miles. For Audi Certified Pre-Owned (CPO) vehicles, the claim type is G10, requiring owner verification. The specific warranty details are:

• Claim Type: 110 (up to 48 Months/50,000 Miles) or G10 (for CPO Covered Vehicles – Verify Owner).
• Service Number: 3993
• Damage Code: 0039
• Labor Operations:
  • SVM update: 0151 0000 (Time stated on diagnostic protocol, Max 50 TU)
  • Road test after service procedure: 0121 0004 (10 TU)
• Diagnostic Time: GFF (No allowance, 0 TU), Road test prior to service procedure (No allowance, 0 TU)
• Claim Comment: As per TSB 2048671/6

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Source: NHTSA ID: 10236591