2021-2022 Audi Driver Assist System Flicker & Warning TSB

Revision History and Superseded Bulletins

This Technical Service Bulletin (TSB) 90 23 29 2069244/2 was published on June 12, 2023. It is a Revision 2, which primarily revised warranty information to include increased GFF time. This bulletin supersedes Technical Service Bulletin Group 90 number 23-99, dated February 2, 2023. It also replaces PSS 2065489/1, titled "PSS 91 Intersection assist arrows flicker after the vehicle is started."

For earlier model years (2019 and 2020 A6, A7, A8, Q7, Q8, and e-tron quattro), refer to:

• PSS 2060332: PSS 90 Audi adaptive light/Audi pre sense malfunction or driver assist systems inop, DTC C12D5FA stored.
• PSS 2061489: PSS 90 Pre sense malfunction/driver assist systems sporadically inop, DTC B200FF9 is stored in the driver assist module.
• PSS 2061689: PSS 90 Parking aid inop, DTC B107A16 stored in the driver assistance system with symptom code 233474.

Symptoms

Owners of affected 2021-2022 Audi models may experience an Audi driver assist system flicker. Specifically, the following issues have been reported:

• The intersection assist arrows flicker for a short period after the vehicle has started (as shown in Figure 1 of the TSB, which depicts RCTA/Intersection assist arrows).
• Various driver assist warnings are displayed on the instrument cluster.

Fault Codes / DTCs

Technicians may find one or more of the following Diagnostic Trouble Codes (DTCs) stored in the control module for driver assist systems (zFAS) -J1121- (address word 00A5):

Code	Description	Module	Symptom Code
C12D5FA	Control unit for driver assist systems, picture processor does not respond, sporadic	zFAS -J1121-	221281
B200FF9	Internal Malfunction	zFAS -J1121-	2117657
B107A16	Supply voltage for park assist sensor Voltage too low	zFAS -J1121-	233474

Important Warnings for Owners

Audi has issued specific warnings for technicians performing this service. Owners should be aware of these to ensure proper diagnosis and repair:

• NOTICE: "If active fault messages about driver assist systems are shown in the instrument cluster, this TPI may not solve the problem. If the flashing procedure is started despite active fault messages, the flash routine will be aborted and it may be necessary to replace control units as a result. Please attempt to resolve those cluster messages by clearing vehicle DTCs and cycling the ignition before starting this procedure."
• CAUTION: "Always use DoIP when flashing a control module via ODIS in supported vehicles."
• CAUTION: "On the screen with the message 'Should the entered SVM code be accepted or the vehicle connection be changed', make sure that DoIP is selected. If DoIP is not selected, you can change the vehicle access protocol by selecting “-3- Change vehicle access (CAN, DoIP, CANFD). Not selecting DoIP may lead to extremely long flash times that may not be fully reimbursed by warranty."

Technical Background

The observed complaints, including the Audi driver assist system flicker, are linked to prior versions of the control unit software. An optimized software solution was implemented in production for model year 2023 vehicles.

Repair Procedure Summary

To address the Audi driver assist system flicker and related warnings, technicians will perform a software update on the affected control units. The general procedure involves:

1. DoIP Activation: Technicians must first activate DoIP (Diagnostics over Internet Protocol) in ODIS. This is done by navigating to Administration >> General >> GFF Process >> DoIP communication >> Only allow DoIP communication. This setting will automatically reset when the diagnostic session ends. A red LED on the VAS 6154(A) diagnostic tool indicates DoIP is active.
2. Software Update: Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions. The vehicle's software is updated using the SVM action code FASISKD6A001. This update may take between 30 and 90 minutes, depending on the vehicle's equipment and current software level.
3. Bus Sleep Cycle: After the flash, a bus sleep cycle must be performed. This involves exiting the flash context in ODIS, turning off the ignition, removing the charger and diagnostic dongle from the vehicle, closing the hood, trunk, and all doors, and waiting approximately 6 minutes until the vehicle has gone to "sleep."

Troubleshooting Steps

In rare cases, after the software update, the following DTCs may be stored in the driver assist systems control unit -J1121- (diagnostic address 00A5):

• DTC B200FF3: Internal malfunction (sym. 221193)
• DTC B170AF1: Calibration step 2 not carried out (sym. 2117696)

If DTC B170AF1 is stored, technicians must perform the ODIS test plan calculated for that specific DTC. While DTC B107A16 (Supply voltage for park assist sensor Voltage too low) may still be stored after the update, the fault should no longer cause permanent symptoms once the DTC is cleared and the ignition cycle is completed.

Owners should be informed that some driver assist settings may revert to their default values after the update is performed.

Warranty Information

Warranty claims for this procedure should be submitted as per TSB 2069244/2 and the Audi Warranty Policies and Procedures Manual. The claim type is 110 for vehicles up to 48 months/50,000 miles, or G10 for CPO covered vehicles (owner verification required). If the vehicle is outside of any warranty, this TSB is for informational purposes only.

• Service Number: 9093
• Damage Code: 0039
• Labor Operations:
  • Check vehicle (bus sleep mode): 0689 0199 (10 TU)
  • Software update (Includes checking for DTCs): 0151 0000 (Time stated on diagnostic protocol, Max 250 TU)
• Diagnostic Time:
  • GFF: No allowance (0 TU)
  • Road test prior to service: No allowance (0 TU)
  • Road test after service: No allowance (0 TU)
• Claim Comment: As per TSB 2069244/2

Additional Resources

For complete details on software version management, technicians should refer to TSB 2011732: 00 Software Version Management (SVM), operating instructions. All part and service references in this TSB (2069244) are subject to change, and technicians should always consult their Parts Department and/or ETKA for the latest information.

NHTSA ID: 10240974