Kia Optima: Seat belt warning (for front passenger’s seat)
The front passenger's seat belt warning light will activate to the following table when the ignition switch is in "ON" position.

*1 The seat belt warning light will go off if the vehicle speed decreases below 5 km/h (3 mph). If the vehicle speed increases above 5 km/h (3 mph), the warning light will blink again.
✽ NOTICE
Seat belt warning (for driver’s seat)
Seat belt - Driver's 3-point system with emergency locking retractorParking Brake
Checking the Parking Brake
Check the stroke of the parking brake by counting the number of “clicks’’ heard
while fully applying it from the released position. Also, the parking brake alone ...
Inspection
1.
Check the engine oil quality.
Check the oil deterioration, entry of water, discoloring of thinning. If
the quality is visibly poor, replace the oil.
2.
Check t ...
Air Conditioning System Operating Tips
If the vehicle has been parked in direct sunlight during hot weather, open
the windows for a short time to let hot air inside the vehicle escape.
To help reduce moisture on the inside of windo ...