2022 Audi e-tron Traffic Sign Warning Settings TSB

Owners of certain 2022 Audi vehicles, including the Audi e-tron traffic sign warning system, may notice that their customized settings for the traffic sign-based speed limit threshold are not being saved. This issue means that any adjustments made to how the vehicle interprets and displays speed limits based on traffic signs will revert to default after certain conditions. This specific problem is addressed by Audi Technical Service Bulletin (TSB) 90 24 91 2073988/1, issued on May 21, 2024.

Symptoms of the Traffic Sign Warning Issue

The primary symptom drivers will experience is that the "traffic sign-based speed limit threshold setting is not permanently stored in the vehicle." This means that any personalized adjustments to the speed limit warning threshold will not persist. Furthermore, the setting will be "reset to its default value after a vehicle bus sleep," requiring owners to reconfigure it every time the vehicle enters and exits a bus sleep state.

Technical Background and Cause

Audi has identified the root cause of this issue as a software-related problem within the driver assist systems control unit. Specifically, the -J1121- control unit is implicated in causing the traffic sign-based warning settings to not be permanently stored. This software anomaly prevents the vehicle from retaining user-defined preferences for the speed limit threshold.

Repair Procedure Summary

To resolve this issue, a repair must be performed according to the instructions outlined in a separate Technical Service Bulletin, TSB 2069244. While TSB 90 24 91 2073988/1 identifies the problem and its cause, the detailed steps for the software update or repair are provided in TSB 2069244. Owners experiencing an Audi e-tron traffic sign warning issue should consult their authorized Audi dealer to have this service performed.

Production Solution

Audi has implemented a production solution to prevent this issue in newly manufactured vehicles. This solution involves the software version SW0365 for the driver assist systems control unit -J1121-. This indicates that vehicles produced with this software version or later should not exhibit the described symptom.

Warranty Information

For details regarding warranty coverage for this repair, owners and technicians should refer to TSB 2069244. This bulletin contains specific information on how to process warranty claims related to the software update for the J1121 control unit.

Source: NHTSA ID 11002153, TSB 90 24 91 2073988/1