Kia Optima: Multimedia jack. Description and OperationDescription
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 system when it is linked to this jack. The customer has this added option.In case of distortions from media connected to the AUX source, the audio unit may not be defective but the output level of the used media does not match the specification of the AUX input.

Multimedia jack. Schematic DiagramsUse of MTBE
Kia recommends avoiding fuels containing MTBE (Methyl Tertiary Butyl Ether) over
15.0% vol. (Oxygen Content 2.7% weight) in your vehicle.
Fuel containing MTBE over 15.0% vol. (Oxygen Content 2.7% w ...
If the engine doesn't turn over or
turns over slowly
1. If your vehicle has an automatic
transaxle, be sure the shift lever is in N
(Neutral) or P (Park) and the emergency
brake is set.
2. Check the battery connections to be
sure they are clean ...
HAC (Hill-start assist control)
Hill start Assist Control is a comfort function. The main intend is to prevent
the vehicle from rolling backwards while driving off uphill on an inclined surface.
HAC holds the braking pressure bu ...