Service bulletin LI27.60-P-078599

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's 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

The document

• NHTSA's copy of the document (PDF)
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The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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