Kia Optima: Fuel Filler Cap. Description and OperationDescription
A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which seals the fuel filler. After the gasket on the fuel filler cap and the filler neck flange contact each other, the ratchet produces a loud clicking noise indicating the seal has been set.

InstallationMAX A/C-Level (B, D, E)
To operate the MAX A/C, turn the temperature knob to extreme left. Air flow is
directed toward the upper body and face. In this mode, the air conditioning and
the recirculated air position will ...
Child restraint system
Children riding in the car should sit in the rear seat and must always be properly
restrained to minimize the risk of injury in an accident, sudden stop or sudden
maneuver. According to accident s ...