2021-2025 Audi ABS/ESC Speed Sensor Implausible Signal TSB

Audi has released a Technical Service Bulletin (TSB) identified by NHTSA ID 10247205 concerning an issue with the ABS/ESC speed sensor. This bulletin provides crucial information for technicians when the sensor reports an "implausible signal," which can affect various vehicle systems.

This TSB is relevant for a wide range of 2021-2025 Audi models, including the Audi e-tron ABS/ESC sensor. Understanding the symptoms and the manufacturer's guidance is important for owners.

Symptoms

Owners may notice specific warning indicators or changes in vehicle behavior related to the braking and stability control systems. The primary symptom addressed by this TSB is when the "ABS/ESC speed sensor has an implausible signal."

This condition can trigger the illumination of the "ABS warning light" on the instrument cluster. It may also impact the performance of related systems such as traction control, electronic limited slip, and the hill descent assist sensor.

Diagnosis and Trigger Conditions

This bulletin specifically addresses situations where the ABS/ESC speed sensor sends an implausible signal to the vehicle's control modules. An implausible signal means the data received from the sensor is inconsistent with expected values or other vehicle data, indicating a potential malfunction.

Technicians will use the information provided in this TSB to accurately diagnose the root cause of the implausible signal. This diagnostic process aims to determine if the issue stems from the sensor itself, its wiring, or other related components.

Repair Procedure Summary

While the TSB NHTSA ID 10247205 does not detail a specific repair step-by-step, it provides essential information for addressing the "ABS/ESC speed sensor implausible signal." This guidance helps technicians understand the nature of the problem and the appropriate diagnostic pathways.

The bulletin's purpose is to inform service personnel on how to approach and resolve cases where the ABS/ESC speed sensor is reporting incorrect or inconsistent data. This ensures proper diagnosis and effective resolution of the issue, maintaining the integrity of the vehicle's safety systems.

What Owners Should Know

It's important for owners to understand that this is a Technical Service Bulletin (TSB) and not a recall. TSBs provide guidelines for dealerships to address known issues that might not affect all vehicles or pose an immediate safety risk requiring a recall.

If you experience symptoms related to the ABS/ESC system, such as an illuminated "ABS warning light" or concerns about your Audi e-tron ABS/ESC sensor, it is recommended to contact an authorized Audi service center. They can perform a diagnostic check using the information provided in TSB NHTSA ID 10247205 to identify and resolve the issue.

NHTSA ID: 10247205