Electrical System

WARNING: This page is about a different car, the 2017 Kia K900. However, it is still accessible from the selected car via links, so may be relevant.

Be sure to disconnect the battery cable from the negative (-) terminal of the battery.
Never pull on the wires when disconnecting connectors.
Locking connectors will click when the connector is secure.
Handle sensors and relays carefully. Be careful not to drop them against other parts.

Fig 1: Disconnecting Battery Cable From Negative Terminal Of Battery

Courtesy of KIA MOTORS AMERICA, INC.