Kia Optima: Opening the hood
1. Pull the release lever to unlatch the hood. The hood should pop open slightly.
WARNING
Open the hood after turning off the engine on a flat surface, shifting the shift lever to the P(Park) position for automatic transaxle and to the 1st(First) gear or R(Reverse) for manual transaxle, and setting the parking brake.

2. Go to the front of the vehicle, raise the hood slightly, pull the secondary latch (1) inside of the hood center and lift the hood (2).
3. Raise the hood. It will raise completely by itself after it has been raised about halfway.
Hood
Closing the hoodKnock Sensor (KS). Specifications
Specification
Item
Specification
Capacitance (pF)
850 ~ 1,150
...
Battery replacement
Type A
Type B
A battery should last for several years, but if the transmitter or smart key
is not working properly, try replacing the battery with a new one. If you are unsure
how to use or ...