Kia Optima: Change to "winter weight" oil if 
necessary - Winter driving - Driving your vehicle - Kia Optima TF 2011-2026 Owners ManualKia Optima: 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 you should use, consult an authorized Kia dealer.

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:

Sunroof
Your sunroof can be opened or closed electrically when the ignition switch is in the “ON” position. You can slide or tilt the sunroof by depressing the corresponding switch located on the do ...

Inspection
Smart Key Unit - Refer to the BE group - inspection / self diagnosis with GDS. Smart Key Switch - Refer to the BE group - inspection / self diagnosis with GDS. ...

Body Side Moldings. Repair procedures
Replacement Roof Molding Replacement • When prying with a flat-tip screwdriver, wrap it with protective tape, an ...

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