2021 Audi Parking Aid Malfunction DTC B107BF0 B10FCF0

Audi has released Technical Service Bulletin (TSB) 2058769/2 to address issues with the parking aid system in certain 2021 models. This bulletin specifically targets instances where the parking aid functions sporadically or displays a "Sensor view restricted" warning message.

The TSB provides guidance for diagnosing and resolving Diagnostic Trouble Codes (DTCs) B107BF0 and B10FCF0, which are related to environmental influences on the parking aid sensors. Understanding this information can help owners identify the problem and determine the appropriate course of action.

Symptoms

If you own a 2021 Audi A6, A7, Q7, Q8, or e-tron and experience an Audi e-tron parking aid malfunction, you might notice the following symptoms:

• The parking aid system works sporadically or not at all.
• A warning message appears in the instrument cluster stating: "Front/rear parking aid: Sensor view restricted because of environmental factors No obstacle warning."
• The issue is often reproducible, meaning it occurs consistently under certain conditions.

These symptoms are typically linked to specific fault codes stored in the vehicle's driver assist systems control module, J1121.

Fault Codes / DTCs

The following Diagnostic Trouble Codes (DTCs) may be stored in the J1121 control module (address word 00A5) when this issue occurs:

Code	Description	Module
B107BF0	Rear parking aid sender, malfunction because of environment influences (symptom codes 233479 or 233473)	J1121 (Driver Assist Systems)
B10FCF0	Front parking aid sender, malfunction because of environment influences (symptom codes 233523 or 233472)	J1121 (Driver Assist Systems)

These codes indicate that either the front or rear parking aid sensors are experiencing malfunctions due to external environmental factors.

What the service bulletin says

Technical Service Bulletin 2058769/2 explains that the 6th generation ultrasound parking aid sensors, introduced with the 2019 A8, are designed to detect problems caused by external influences like dirt, ice, or other ultrasound signals. When such issues are detected, the system temporarily becomes unavailable to prevent false warnings to the driver.

The bulletin outlines specific checks to perform on the ultrasound sensors, depending on the stored DTC. These checks include inspecting for dirt, ice, foreign objects, stickers, proper license plate fitment, and any damage to the bumper, air intake grille, or underbody. Technicians should also check the fit of the sensors, bumpers, and surrounding trim.

For a sporadic Audi e-tron parking aid malfunction, the bulletin states that no further measures are necessary. This is because the issue is typically caused by environmental factors. Importantly, replacing the J1121 or J1122 driver assistance systems control units without clear findings is not an effective solution and claims for such replacements may be reviewed.

If the concern is reproducible or static, indicating a persistent fault, it suggests that one of the ultrasound sensors, its mountings, or associated circuits may be faulty. In such cases, standard diagnostic procedures should be followed to pinpoint the exact problem.

What to do

If you are experiencing a 2021 Audi e-tron parking aid malfunction, first visually inspect your vehicle's parking aid sensors. Look for any dirt, ice, snow, foreign objects, or damage that might be obstructing them. Ensure your license plate is properly fitted and not interfering with the sensors.

If the issue is sporadic and resolves itself after cleaning or when environmental conditions change, no immediate repair may be necessary, as per the TSB. However, if the parking aid malfunction is persistent, reproducible, or static, it is recommended to schedule an appointment with an authorized Audi service center. They can perform a thorough diagnosis using specialized tools to identify and address any faulty components.

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Source: NHTSA ID 10178567