Kia Carens: Evaporative Emission Control System / Fuel Filler Cap Description and operation
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.

Removal
1.
Lift the vehicle.
2.
Disconnect the vapor hose quick-connector (A) and ventilation hose (B).
3.
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Other information:
Removal and Installation
1.
Remove the under cover.
2.
Remove the oil drain plug, and drain the oil into a container.
3.
Remove the oil pressure switch(A).
Tightening torque :
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ESC ON condition
When the ignition is turned ON, ESC and ESC OFF indicator lights illuminate
for approximately 3 seconds, then ESC is turned on.
Press the ESC OFF button for at least half a second after turning the ignition
ON to turn ESC off. (ESC OFF indicator will illuminate). To turn the ...