MANUFACTURER COMMUNICATION NUMBER: TSB-17-23-003
Components: ELECTRICAL SYSTEM, EQUIPMENT
NHTSA ID Number: 10109106
Manufacturer Communication Number: TSB-17-23-003
Summary
This is a Technical Service Bulletin, sent to dealers, to provide instructions for reprogramming the CVT ECU with updated software to minimize shift shock.
PURPOSE On certain Mirage and Mirage G4 vehicles with CVT transmissions, drivers may experience shift shock in the following conditions:
Condition 1: When coming to a stop.
Condition 2: After coming to a complete stop with the transmission in the D range.
The first condition may be caused by improper timing of the torque converter clutch disengagement.
The second condition may be due to improper CVT clutch engagement control, causing the driver to experience shift shock when the CVT clutch is re-engaged.
This TSB instructs dealers to reprogram the CVT ECU with updated software to optimize the torque converter or CVT clutch engagement control to minimize shift shock.
AFFECTED VEHICLES The following vehicles equipped with CVT transmissions may exhibit one or both shift shock conditions:
Condition
Model
Model Year
Affected VIN Range Starting VIN
Affected VIN Range - Ending VIN
1 & 2
Mirage
2014
All
All
1 & 2
Mirage
2015
All
All
2
Mirage
2017
Beginning of Production
ML32A3HJ2HH020447
2
Mirage G4
2017
Beginning of Production
ML32F3FJ9HHF19303
As I find other TSBs related to the CVT, I'll either include them in this post or as a separate post in this thread. I'll try to keep things organized here.