Kia Optima: Safety Belt Warning Light and ChimeAs a reminder to the driver and passenger, safety belt warning light will blink for approximately 6 seconds each time you turn the ignition switch ON.
If the driver's lap/shoulder belt is not fastened when the key is turned ON or if it is unfastened after the key is turned ON, the safety belt warning light blinks for approximately 6 seconds and safety belt warning chime sounds for approximately 6 seconds.

Safety Belt Restraint SystemTire replacement
If the tire is worn evenly, a tread wear
indicator will appear as a solid band
across the tread. This shows there is
less than 1.6 mm (1/16 inch) of tread
left on the tire. Replace the tir ...
Troubleshooting
Troubleshooting
Problem Symptoms Table
Before replacing or repairing air conditioning components, first determine if the
malfunction is due to the refrigerant charge, air flow or compr ...
Camshaft Position Sensor (CMPS). Troubleshooting
Wave Form
...