2023-2025 Audi Parking Aid Fault DTC B107BF0 B10FCF0

Owners of certain 2023-2025 Audi models may experience an intermittent Audi e-tron parking aid fault where the parking aid system sporadically does not work. This issue is documented in Audi Technical Service Bulletin (TSB) 91 24 13 2058769/7, which supersedes TSB Group 91 number 23-81 dated March 17, 2023. The TSB outlines specific diagnostic steps for this Audi e-tron parking aid fault and clarifies that in many cases, replacement of components is not necessary.

Symptoms

Drivers may notice an intermittent or static warning message displayed in the instrument cluster related to the parking aid or maneuver assistant. Depending on the software level (SW 0257/0259 or SW 0290 or higher) in the Driver assist system module J1121, the exact message may vary:

• "Front/rear parking aid fault. Obstacles cannot be detected."
• "Front/rear parking aid: Sensor view restricted due to surroundings: Obstacles not detectable."
• "Maneuver assist fault: Please contact workshop."

Fault Codes / DTCs

When this Audi e-tron parking aid fault occurs, one of the following Diagnostic Trouble Codes (DTCs) may be stored in the driver assist systems control module J1121 (address word 00A5):

DTC Code	Description	Symptom Codes
B107BF0	Rear parking aid sender, malfunction because of environment influences	233479, 233473
B10FCF0	Front parking aid sender, malfunction because of environment influences	233523, 233472

These DTCs indicate that the system's temporary partial availability is due to environmental factors.

Diagnosis / Trigger Conditions

Audi's 6th generation ultrasound parking aid sensors, introduced with the 2019 A8 (type 4N), are designed to detect problems caused by external influences. These can include dirt, ice, and external ultrasound signals from other sources. When such conditions are detected, the system temporarily disables itself to prevent false warnings. This temporary unavailability is what triggers the warning messages and DTCs.

Important Warnings

It is crucial for technicians and owners to understand the nature of this issue. The TSB includes a specific warning:

NOTICE In this case, replacement of the driver assistance systems J1121 without clear findings is not effective. Part replacement of the J1121 does not solve this issue. Claims for replaced parts will be subject to review.

This means that simply replacing the J1121 control unit will not resolve the sporadic parking aid fault if it's caused by environmental factors. Unnecessary part replacements may not be covered under warranty.

Repair Procedure Summary

If you are experiencing this issue, a technician should perform the following checks on the ultrasound sensors:

1. Visual Inspection: Check for any dirt, ice, foreign objects, stickers, or an improperly fitted license plate that might obstruct the sensors.
2. Damage Assessment: Inspect the bumper, air intake grille, and underbody for any damage (e.g., from parking impacts) or mechanical damage like stone chips and scratches.
3. Sensor Fitment: Verify the correct fit of the sensors, bumpers, and surrounding trim.
4. Measured Value Block Check: Use diagnostic tools to check the "Vibration time of parking aid sender" measured value block in the J1121 control module. Look for cyclic or dynamic changes in values when an obstacle is approached.

If the concern occurs sporadically and is linked to environmental influences, no further action is typically required. If the issue is reproducible or static, it may indicate a faulty ultrasound sensor, mount, or circuit, necessitating standard diagnostic procedures.

What Owners Should Know

This Technical Service Bulletin (TSB) 91 24 13 2058769/7 is informational and does not apply to any Audi Warranty. This means that while it provides guidance for diagnosis and repair, the costs associated with these checks or any necessary repairs might not be covered under the standard warranty, especially if the issue is determined to be environmental rather than a manufacturing defect. Always consult with your authorized Audi service center for specific details regarding your vehicle.

NHTSA Citation

This information is based on NHTSA Manufacturer Communication ID 11002166.