Kia Optima: Check battery and cables

Use high quality ethylene glycol coolant

Your vehicle is delivered with high quality ethylene glycol coolant in the cooling system. It is the only type of coolant that should be used because it helps prevent corrosion in the cooling ...

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 ...

See also:

Smart key precautions
✽ NOTICE If, for some reason, you happen to lose your smart key, you will not be able to start the engine. Tow the vehicle, if necessary, and contact an authorized Kia dealer. A max ...

Rear Seat Armrest
This armrest is located in the center of the rear seatback. Pull the armrest down using the strap provided on the armrest. To open the armrest cover, press the button on the top of the cover and ...

Tire Speed Ratings
The chart below shows many of the different speed ratings currently being used for passenger car tires. The speed rating symbol is part of the tire size designation on the sidewall of the tire. Th ...