August 28, 2018 Service bulletin

Region Letter: August 28,2018 The instructions for Option #1 have been corrected

Toyota technical service bulletin JSD-Region Lette for 2014-2017 Toyota Corolla, 2017 Toyota Corolla Im and 2016 Scion Im.

Bulletin number: JSD-Region Lette
Component: Electrical system
Summary: Region Letter: August 28,2018 The instructions for Option #1 have been corrected. 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 107 complaints in the electrical category.

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