2021 Audi Driver Assist Malfunction TSB B200FF9

Owners of 2021 Audi vehicles may encounter various issues with their driver assistance systems, often accompanied by dashboard warning messages and the diagnostic trouble code (DTC) B200FF9. This TSB outlines a software update designed to resolve these malfunctions, ensuring optimal performance of critical safety features.

Symptoms

Owners of affected 2021 Audi vehicles may experience the following issues related to an Audi driver assist malfunction B200FF9:

• Lane Change Assist/Intersection Assist: These systems may sporadically stop working. The instrument cluster may display one of the following messages:
  • "Intersection assist: fault. Please contact service."
  • "Side assist and exit warning system: fault. Please contact service."
  • "Rear cross-traffic assist: fault. Please contact service."
  • "Audi pre sense: fault. Please contact service."
• Traffic Sign Recognition: Speed limit settings based on traffic signs are not permanently stored and are lost with every ignition cycle.
• Adaptive Cruise Assist (ACA): Vehicles equipped with steel suspension may experience ACA disengaging or losing calibration when towing a trailer or using a bike rack.

Fault Codes / DTCs

Technicians may find the following diagnostic trouble codes (DTCs) stored in various control modules:

Code	Description	Module(s)
B200FF9	Internal malfunction (symptom code 1311089)	Front corner radar control modules (J1088/J1089)
B200FF9	Internal Malfunction (symptom codes 1311057, 1311058, 1311059, and/or 1311060)	Lane change assist control modules (J769/J770)

It is important to note that this TSB specifically addresses DTC B200FF9 when found in the radar or lane change assist control modules. It does not apply to DTC B200FF9 if it is stored in the driver assist systems control module J1121 (address word 00A5) in conjunction with PSS 2061489.

Technical Background

This TSB addresses an Audi driver assist malfunction B200FF9 by providing an optimized software update for multiple driver assist features. The update impacts several control modules, including the driver assist systems control module (J1121), adaptive cruise control module (J428), lane change assist control modules (J769/J770), front left/right radar sensor control modules (J1088/J1089), control module for laser distance control (J1122), and the airbag control module (J234).

Important Warnings for Owners

Owners should be aware of several critical points regarding this software update:

• Existing Campaigns: All outstanding service campaigns must be completed before this update can be performed.
• Active Warning Messages: If any warning messages are currently displayed in the instrument cluster, they must be addressed and resolved before attempting this software update. Failing to do so could potentially "brick the driver assist control module, J1211 (address word 00A5)", rendering it inoperable.
• Event Data Recorder (EDR) Backup: For 2020 Audi e-tron quattro and Audi e-tron sportback models, federal law requires the airbag's Event Data Recorder (EDR) to be backed up prior to running this update. Owners of these specific models will need to sign a declaration of consent.
• Personalization Settings: This update affects multiple control modules, and certain customer personalization settings might be reset to factory defaults.
• Third-Party Modifications: Audi of America and its affiliates are not liable for issues arising from third-party modifications, undocumented retrofits, non-genuine accessories, or any other modifications not approved by Audi AG.

Repair Procedure Summary

The repair involves a software update using the ODIS diagnostic system. The process generally takes 60-120 minutes, including the software update and SVM work.

1. Pre-Update Checks: Ensure all other campaigns are complete and no active warning messages are present in the instrument cluster.
2. System Identification: Use ODIS to determine the system designation of the driver assist systems control module (zFAS), J1121.
3. Media Selection: Based on the zFAS variant, select the appropriate SD Card or USB-C drive for the update. For MY20 Audi e-tron quattro and Audi e-tron sportback with zFAS Var B/C, an SD Card (P/N 4N0906961AR) is required. For all other vehicles with zFAS Var B/C, a USB-C drive (P/N 4N1906961) is needed.
4. EDR Backup (Specific Models): For MY20 Audi e-tron quattro and Audi e-tron sportback, back up the EDR and obtain customer consent.
5. Module Updates: Run the diagnostic test program "J234 – Technical Service Bulletin (TSB) 2061023" in ODIS. Update peripheral control modules using SVM code FASISKD5A001.
6. zFAS Software Update: Insert the appropriate SD Card or USB-C drive (if applicable for zFAS Var B/C) and update the zFAS application software using SVM Code FASISKD5A002. This update must be initiated from ODIS, not the red engineering menu.
7. Bus Sleep Cycle: After the update, allow the vehicle to perform a bus sleep cycle by exiting the flash context, turning off the ignition, removing diagnostic tools, closing and locking all doors, and waiting approximately six minutes.

Required Tools or Parts

• ODIS Tester: For diagnostic and programming operations.
• SVM Code: Required for software version management.
• SD Card P/N 4N0906961AR: For MY20 Audi e-tron quattro and Audi e-tron sportback quattro (zFAS Var B/C).
• USB-C drive P/N 4N1906961: For A6, A7, A8, Q7, Q8, MY21 Audi e-tron quattro, and Audi e-tron sportback quattro (zFAS Var B/C).

Warranty Information

This service is covered under warranty for up to 48 months or 50,000 miles. Certified Pre-Owned (CPO) vehicles are covered under G10. If the vehicle is outside of warranty, this Technical Service Bulletin serves as informational guidance only.

• Service Number: 9093
• Damage Code: 0039
• Labor Operations: Software Update (Includes checking for DTCs) - 0151 0000 (Maximum 200 TU)
• Diagnostic Time: GFF - No allowance (0 TU), Road test prior to service procedure - No allowance (0 TU)

Related Bulletins

This TSB (91 21 43 2063502/3, dated October 20, 2021) supersedes Technical Service Bulletin Group 91 number 21-28, dated September 3, 2021. Other related bulletins include:

• PSS 2061489: PSS 90 Pre sense malfunction/driver assist systems sporadically inop, DTC B200FF9 is stored in the driver assist module (Note: This TSB does not apply to B200FF9 in J1121 related to PSS 2061489).
• TSB 2011732: 00 Software Version Management (SVM), operating instructions.
• TSB 2056558: 91 MIB2+ Software Update Instructions.
• TSB 2047812: 00 SD Creator: how to set up and use the SD Creator for obtaining vehicle software updates via the MirrorServer.
• TSB 2060523: 91 MIB3 Software Update Instructions.
• TSB 2062601: 90 DTC U110100 is stored in the driver assistance systems control module.

---

Source: NHTSA ID 10202633