Region Letter: An Electronic Control Unit (ECU) in the subject vehicles has improper programming that...
Toyota technical service bulletin JSD-Region Lette for 2014-2017 Toyota Corolla and 2017 Toyota Corolla Im.
- Bulletin number
- JSD-Region Lette
- Component
- Power train
- Summary
- Region Letter: An Electronic Control Unit (ECU) in the subject vehicles has improper programming that could lead a component in the Continuously Variable Transmission (CVT) to unnecessarily cycle and experience abnormal wear. If this component becomes damaged, the Malfunction Indicator Lamp (MIL) may illuminate in the instrument cluster and the vehicle could experience a reduction of speed. After reaching a pre-determined gear ratio, the vehicle can be operated up to approximately 37 mph.
Owners of these vehicles have filed 98 complaints in the transmission category.
Vehicles covered
- Toyota Corolla 2014-2017 2014201520162017
- Toyota Corolla Im 2017 2017
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