This bulletin involves replacing the inhibitor switch (neutral safety switch) on some 2017 KIA Optima, Sorento, Optima Hybrid, Optima Plug-In Hybrid, Sportage,Forte and Sedona vehicles, as well as some 2016-2017 Optima vehicles, all equipped with a front wheel drive 6-speed transmission. The inhibitor switch may not allow the correct gear position signal to be sent to various control units. 

Symptoms include the following:

• Malfunction Indicator Lamp on with DTC P0705 (transmission range sensor circuit malfunction, active or history)

• CAN-related DTCs (for both hybrids: CAN DTC C2243)

• Intermittent no-crank/no-start

• Erratic or harsh shifting

• EPB and Hold lights illuminated intermittently

• Key Off indicated after placing the selector lever into the “P” position and depressing the Start/Stop button. When this condition occurs, the “P” position is not indicated on the instrument cluster. 

Replace the inhibitor switch (available as P/N 42700 3B700QQK) and clear any DTCs.