Harsh 5-4 shift felt while braking, may be mistaken for a harsh brake engagement

Bulletin number

LI27.60-P-078599

Component

Power train

Summary

Complaint Harsh 5-4 shift felt while braking, may be mistaken for a harsh brake engagement Cause In certain driving scenarios the transmission adaption is recorded at a higher value skewing the learning and leading to harsh engagement of clutches that is felt as a harsh 5-4 Remedy SW is now available for the Transmission that adjusts the learning to keep adaption values within a proper range Run through the IPR process for all steps to be available this allows us to gather information without need for TIPS case 1.) Please Install the new transmission SW via Xentry 2.) After perform the reset of learned values deceleration mode in VGS Special Procedures Tab 3.) Then please perform 5 standstill adaptions in a row 4.) Clear all faults 5.) Perform final QC test drive & confirm normal operation of all shifts THE ADAPTIONS MUST BE RESET IN ORDER TO STOP REPEAT VISITS As of 03/06/2025 ALL warranty claims must include a print out of the IPR screen showing a check mark next to each required step as an indication that all steps have been completed. The print out showing completion of these steps must be uploaded to the VEGA warranty claim in order to be approved and paid. See attached example of needed IPR screen If issues arise during the process, please open a TIPS case

Owners of these vehicles have filed 3 complaints in the transmission category.