Shift quality logic improvement (SA315A)
Kia technical service bulletin TSBTRA071A for 2018 Kia Sorento and 2018 Kia Optima.
- Bulletin number
- TSBTRA071A
- Component
- Power train
- Summary
- TSB - SERVICE ACTION: SHIFT QUALITY LOGIC IMPROVEMENT (SA315A) - This bulletin provides the procedure to improve the logic of the Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.0T, produced from April 19, 2017 through July 10, 2017, and some 2018MY Sorento (UMa) 3.3L vehicles, produced from March 31, 2017 through July 25, 2017, which may experience a shift quality concern, such as a hard downshift, upshift, and/or shift delay.
Owners of these vehicles have filed 28 complaints in the transmission category.
Vehicles covered
- Kia Sorento 2018 2018
- Kia Optima 2018 2018
VIN decoder
See the problems and recalls for an exact car
Buying a used Kia Sorento?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history