2021 Audi A4, A5, Q5 Driver Assist System Faults TSB

Symptoms of Driver Assist System Malfunction

Owners of certain 2021 Audi vehicles may experience their driver assist systems becoming unavailable. This condition is typically accompanied by one or more specific messages displayed on the instrument cluster.

Verbatim messages reported include:

• "Audi pre sense: fault."
• "Traffic sign recognition: fault."
• "ACC with traffic jam assist: unavailable."
• "Audi active lane assist: currently unavailable."

These warnings indicate an issue with the vehicle's advanced driver assistance systems.

Diagnostic Trouble Codes (DTCs)

When driver assist systems are unavailable, a technician inspecting the vehicle may find specific diagnostic trouble codes (DTCs) stored in the camera control module (R242, address word 00A5). These codes point to an internal malfunction within the module.

The relevant DTCs are:

Code	Description	Module
B200FF1	Internal malfunction	Camera control module R242
B200FF2	Internal malfunction	Camera control module R242

These DTCs can be stored either statically (permanently) or sporadically (intermittently).

Understanding the Cause

The underlying cause for these driver assist system malfunctions and the associated DTCs B200FF1 and B200FF2 is an internal communication issue within the camera control module (R242) during its start-up phase. This prevents the module from functioning correctly, leading to the system unavailability and warning messages. This issue affects the 2021 Audi A5 driver assist fault.

Repair Procedure Summary

Audi Technical Service Bulletin 90 24 19 2048926/10 outlines the specific repair procedures based on which DTCs are present:

1. If only DTC B200FF1 is logged: The camera control module R242 should be replaced.
2. If both DTCs B200FF1 and B200FF2 are logged: The camera control module R242 should be replaced.
3. If only DTC B200FF2 is logged and the R242 software is older than 0055: The camera control module R242 should be updated via SVM code A5A002. If the software version is 0055 or newer, replacement might still be necessary if the update doesn't resolve the issue.

This TSB supersedes an earlier bulletin, Group 90 number 20-77, dated October 16, 2020, reflecting updated instructions and warranty information. The production solution for this issue was implemented in calendar week 11 of 2021.

Required Software and Service Actions

For vehicles requiring a software update, the camera control module R242 (address word 00A5) must be updated using SVM code A5A002. This process requires following the instructions detailed in TSB 2011732, titled "00 Software Version Management (SVM), operating instructions."

Specific software part numbers and versions are detailed in the bulletin, indicating the old and new software versions for various models. For example, for A4 and A5 models, old software versions like 8W0907217A (older than 0044) would be updated to 8W0907217B (version 0044). Other part numbers mentioned include 8W0907217C, 4M0907217B, 4M0907217C, 4M0907217D, 4M0907217E, 80A907217, and 80A907217A.

Important Warranty Information

This Technical Service Bulletin 90 24 19 2048926/10 provides guidance for technicians. If your 2021 Audi A5 driver assist fault occurs outside of the vehicle's warranty period, this bulletin serves as informational guidance only, and any repairs may not be covered by Audi.

Warranty claims for this issue use specific codes:

• Service Number: 9638
• Damage Code: 0040
• Labor Operations:
  • Replace camera for assist systems: 9638 55xx
  • GFF (without software update): 0150 0000
  • Software update (performed): 0151 0000
  • Charge battery: 2706 8950

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

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Source: NHTSA ID: 11007251, TSB 90 24 19 2048926/10