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April 13, 2017 Service bulletin

Voltage regulator performance enhancement (SA278)

Kia technical service bulletin TSB-ELE131 for 2017 Kia Sorento and 2017 Kia Optima.

Bulletin number
TSB-ELE131
Component
Electrical system: 12v/24v/48v battery
Summary
TSB: SERVICE ACTION: VOLTAGE REGULATOR PERFORMANCE ENHANCEMENT (SA278) - This bulletin provides the procedure to increase the torque on the voltage regulator screws on some 2017MY Sorento (UMa), produced from October 3, 2016 to January 24, 2017, and 2017MY Optima (JFa) vehicles, produced from October 3, 2016 to January 26, 2017, which may experience low battery voltage or a no-start condition. Follow the procedure outlined in this bulletin to increase the two (2) screws? torque on the voltage regulator. Before conducting the procedure, verify that the vehicle is included in the list of affected VINs.

Owners of these vehicles have filed 123 complaints in the electrical category.

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