2023-2025 Audi Parking Aid System Malfunction TSB

Symptoms of an Audi Parking Aid Fault

Owners of 2023-2025 Audi vehicles may experience an intermittent or static warning message related to the parking aid or maneuver assistant appearing in the instrument cluster. This Audi parking aid fault can manifest with different messages depending on the software level of the Driver assist system module J1121.

For vehicles with software level SW 0257/0259 in the J1121 module, the message may read: "Front/rear parking aid fault. Obstacles cannot be detected."

For vehicles with software level SW 0290 or higher, the messages could be: "Front/rear parking aid: Sensor view restricted due to surroundings: Obstacles not detectable." or "Maneuver assist fault: Please contact workshop."

Fault Codes (DTCs) and Descriptions

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

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

These codes indicate a temporary partial availability of the system due to external factors such as other ultrasound signals, dirt, ice, or even construction equipment.

Diagnosis and Trigger Conditions

The parking aid system in affected Audi models uses 6th generation ultrasound sensors. These sensors are designed to detect problems caused by external influences like dirt, ice, or external ultrasound signals. When such conditions are detected, the system temporarily becomes unavailable to prevent false warnings. This temporary unavailability is what triggers the warning messages and DTCs like B107BF0 and B10FCF0.

Technicians will perform checks on the ultrasound sensors based on the stored DTC. This includes:

• Inspecting for dirt, ice, foreign objects, stickers, or an improperly fitted license plate.
• Checking for damage on the bumper, air intake grille, and underbody that might indicate an impact.
• Looking for mechanical damage such as stone chips and scratches.
• Verifying the proper fit of the sensors, bumpers, and surrounding trim.
• Checking the measured value block "Vibration time of parking aid sender" in the J1121 control module for cyclic changes when an obstacle is approached.

Important Warnings for Owners

Owners should be aware of specific guidance provided in this TSB:

• "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 TSB is informational only and not applicable to any Audi Warranty."

This means that if the parking aid issue is sporadic and caused by environmental factors, replacing the J1121 control unit is not the correct solution and will not resolve the Audi parking aid fault.

Repair Procedure Summary

If the parking aid issue is sporadic and linked to environmental influences, no further measures are typically necessary. The system is designed to temporarily disable itself under these conditions. However, if the concern is reproducible or static, indicating a persistent problem, a faulty ultrasound sensor, mount, or circuit may be the cause. In such cases, standard diagnostic procedures should be followed to identify and address the specific component failure.

Owner Action

If you are experiencing an Audi parking aid fault with warning messages or believe your vehicle may have DTCs B107BF0 or B10FCF0, it is recommended to visit an authorized Audi service center. Describe the conditions under which the fault occurs, noting if it is intermittent or constant. The service technician will use this Technical Service Bulletin (TSB 91 24 13 2058769/7) to diagnose the issue and determine if environmental factors or a component failure is the cause.

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Source: NHTSA ID: 11002266