Disable

Electrocution Risk


Disabling the Vehicle

The final step in the initial response process, conducted after the vehicle is secured to prevent movement, is to disable the vehicle, its SRS components and the high voltage electrical system.

To prevent current flow through the system, use one of the following procedures to disable the vehicle.

In the event of a dead battery, use the Emergency Trunk Lid Release Cable, located behind the rear passenger headrest, to open the trunk.






To access the Emergency Trunk Lid Release Cable:

1. Remove the cover by using a key (or other tool) to pry it open on the left side.
2. Pull the cable to release the trunk.

Smart Key System and Engine START/STOP Button

Electrocution Risk

This method does not prevent high voltage current flow if Power Relay is damaged.

The Kia Optima Hybrid ignition uses a proximity Smart Key System and Engine START/STOP Button to power up the vehicle. The Smart Key must be located inside the vehicle for the power up procedure to function.

Confirm the status of the READY light on the instrument panel. If the READY light is illuminated, the vehicle is on.

If the READY light is NOT illuminated, the vehicle is off. Do not push the Engine START/STOP button because the vehicle may start.

To turn off the system, put the shift lever in the P (Park) position and press the Engine START/STOP button.

Remove the Smart Key from the vehicle to prevent accidental restart.





Disconnect the negative (-) 12V battery cable, located in the trunk of the vehicle, to further prevent the risk of accidental restart.

Safe Disconnect of the 12 Volt Battery

The 12V auxiliary battery is located in the trunk of the vehicle, in the right side of the luggage compartment, and powers all of the vehicle�s standard electronics. There is a cover over the 12V DC battery that is simply removed to access the battery.





The battery is maintenance-free, which means it has no removable cell caps. Callout A in the drawing above marks the Positive Battery Terminal, Callout B marks the Negative Battery Terminal, and Callout C marks the Vent Hose, which vents to the outside by the right rear wheel well.

When disconnecting the 12V battery, disconnect the Negative Terminal first.

Before disconnecting the 12V battery (if needed) lower the windows, unlock the doors and open the trunk as required. Once the 12V battery is disconnected, power controls will not operate.


PDM2 Relay Removal

In the event the vehicle may not be disabled using the START/STOP Button, disconnect the negative (-) 12V battery cable and pull the PDM2 Relay from the under hood engine fuse box.








If the PDM2 Relay cannot be located, pull all the fuses in the Engine Relay Box.


HEV Safety Plug

The safety plug is located in the rear trunk of the Kia Optima Hybrid and will disable the high voltage battery.





Use the following procedure to remove the plug and disable the high voltage battery:





Wear Personal Protective Equipment including Safety Glasses and Insulating Gloves rated for 1,000V and above when handling High Voltage components.

1. Turn the ignition switch OFF and disconnect the auxiliary 12V battery negative (-) cable.
2. Remove the safety plug access cover.
3. Lift the locking hook up and pull down on the lever.
4. Remove the safety plug.
5. Wait for more than 5 minutes to allow the capacitor in the high voltage system to discharge.