Description And Operation: Description

WARNING: This page is about a different car, the 2017 Kia Optima. However, it is still accessible from the selected car via links, so may be relevant.

The inhibitor switch is installed on top of transaxle, and is connected to the shift lever by a shift cable.
Inhibitor switch signals (S1, S2, S3, S4) are transmitted to the TCM according to the driver's shift lever control.

Courtesy of KIA MOTORS AMERICA, INC.