Kia Optima: Change to "winter weight" oil if necessary

Check battery and cables

Winter puts additional burdens on the battery system. Visually inspect the battery and cables as described in section 7. The level of charge in your battery can be checked by an authorized Kia ...

Check spark plugs and ignition system

Inspect your spark plugs as described in section 7 and replace them if necessary. Also check all ignition wiring and components to be sure they are not cracked, worn or damaged in any way. ...

See also:

If the engine stalls at a crossroad or crossing
If the engine stalls at a crossroad or crossing, set the shift lever in the N (Neutral) position and then push the vehicle to a safe place. ...

Distance to Service
To enter the "Distance to Service" mode, press the TRIP button for less than 1 second. Engine Oil(Tire Rotation) Service Required 1. If service is required, the message will be dis ...

Installation
AVN Head Unit 1. Connect the audio unit connectors and cables. 2. Install the AVN head unit. 3. Install the center fascia upper panel. 4. ...