• While driving, engine speed may increase with accelerator pedal input while vehicle acceleration remains...

Bulletin number

LI27.60-P-080948

Component

Electrical system

Summary

Complaint • While driving, engine speed may increase with accelerator pedal input while vehicle acceleration remains limited with no torque transfer to the wheels • 4th gear may remain displayed in the instrument cluster after the condition occurs, including when the vehicle has come to a standstill. • Cycling the ignition may restore normal transmission operation. • No related fault code or warning message may be stored. Cause During extended periods of steady driving in 4th gear, a preventative flushing routine of the Mux2P valve may be performed in the transmission valve body. If 3rd gear is requested shortly afterward, the pressure within the Mux2P oil channel may not yet have fully reduced. Under these conditions, the transmission control unit may detect an implausible shift actuator movement. As a protective measure, the transmission control unit may temporarily shift the transmission into neutral. As a result, 4th gear may continue to be displayed in the instrument cluster even after the vehicle has come to a standstill. Remedy Please perform the following: 1. Update software TCM8FDCT_PT4 transmission control unit

Owners of these vehicles have filed 4 complaints in the electrical category.