Kia Optima: Check FusesA blade type fuse test taps provided to allow checking the fuse itself without removing if from the fuse box. The fuse is good if the test lamp lights up when one lead is connected to the test taps (one at a time) and the other lead is grounded. (Turn the ignition switch so that the fuse circuit becomes operative)

Checking Cables And Wires
Servicing The Electrical SystemMultimedia Jack. Description and Operation
Description
The multimedia jack on the console upper cover is for customers who like to listen
to external portable music players like the MP3, iPod and etc., through the vehicle's
sound syst ...
Lumbar support (for driver’s seat)
Press the front portion of the switch to increase support, or the rear portion
of the switch to decrease support. ...