Kia Optima: Check spark plugs and ignition system

Change to "winter weight" oil if necessary

In some climates it is recommended that a lower viscosity "winter weight" oil be used during cold weather. See section 8 for recommendations. If you aren't sure what weight oil y ...

To keep locks from freezing

To keep the locks from freezing, squirt an approved de-icer fluid or glycerine into the key opening. If a lock is covered with ice, squirt it with an approved de-icing fluid to remove the ice. ...

See also:

Chart 2
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Component Location Index
Engine Room 1. Receiver Drier 2. Condenser 3. Service Port (High) 4. Service Port (Low) 5. A/C Pressure Transducer 6. Compressor 7. Expansion Val ...

Inspection
Front Seat Heater Switch 1. Disconnect the negative (-) battery terminal. 2. Remove the floor console upper cover.(Refer to the BD group - "Console") ...