LI27.19-P-056610_Ver_4 PDF

A service bulletin that addresses the issue of harsh shifting in certain vehicles for the 2013 and 2014 model years. It describes the problem of harsh 4-3 and 4-5 shifts that may occur, especially with light throttle applications. The document identifies the cause as a possible adaptation problem in the system software under certain conditions. It provides a remedy involving flashing the transmission control unit using Star Diagnosis with specific add-ons for the respective model years.