2021 Audi Parking Aid System Malfunction TSB

Audi has issued Technical Service Bulletin (TSB) 2058769/3 to address instances where the parking aid system in certain 2021 models may sporadically stop working. This issue often presents with a warning message in the instrument cluster and specific diagnostic trouble codes (DTCs) stored in the driver assist systems control module. If you are experiencing an Audi e-tron parking aid malfunction, this TSB provides guidance for diagnosis and resolution.

Symptoms

Owners of affected 2021 Audi vehicles may observe the following symptoms related to an Audi e-tron parking aid malfunction:

• The warning message "Front/rear parking aid: Sensor view restricted because of environmental factors No obstacle warning" appears in the instrument cluster.
• The parking aid system may work sporadically or not at all.
• The issue is often reproducible, indicating a persistent problem.

Fault codes / DTCs

When diagnosing this issue, one of the following Diagnostic Trouble Codes (DTCs) may be stored in the driver assist systems control module, J1121 (address word 00A5):

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

These codes indicate that the system's temporary partial availability is due to environmental factors. This could include external ultrasound signals, street sweepers, construction equipment, dirt, or ice affecting the sensors.

What the service bulletin says

Technical Service Bulletin 2058769/3 outlines diagnostic steps for technicians to address the parking aid system malfunction. The bulletin explains that the 6th generation ultrasound parking aid sensors can detect external influences like dirt, ice, or other ultrasound signals. When such conditions are detected, the system may become temporarily unavailable to prevent false warnings.

The service procedure involves checking the respective ultrasound sensors for various external factors. Technicians are instructed to look for dirt, ice, foreign objects, stickers, or an improperly fitted license plate. They also check for damage to the bumper, air intake grille, and underbody, as well as mechanical damage like stone chips or scratches. The fit of the sensors, bumpers, and surrounding trim is also inspected.

If the concern occurs sporadically, the bulletin states that no further measures are necessary, as it is likely caused by environmental influences. In such cases, replacing the driver assistance systems control module (J1121) is not effective. However, if the issue is reproducible or static, indicating a persistent fault, standard diagnostic procedures should be followed to identify faulty sensors, mountings, or circuits.

What to do

If your 2021 Audi is displaying a "Sensor view restricted" warning or you are experiencing an Audi e-tron parking aid malfunction, you can first check the parking aid sensors yourself. Inspect them for any visible obstructions such as dirt, ice, mud, or stickers. Ensure your license plate is properly fitted and not obstructing any sensors.

If cleaning the sensors and ensuring no obstructions are present does not resolve the issue, or if the problem persists and is consistently reproducible, it is recommended to schedule an appointment with an authorized Audi service center. Inform them about the symptoms you are experiencing and mention Technical Service Bulletin 2058769/3. The dealership technicians can perform a thorough diagnosis using specialized tools to determine if a sensor, mounting, or circuit is faulty and apply the appropriate repair under warranty if applicable.

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Source: NHTSA ID: 10182487, TSB ID: 2058769/3