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.
...
Other information:
All tire pressures (including the spare) should be checked when the tires are
cold. “Cold Tires” means the vehicle has not been driven for at least three hours
or driven less than 1.6 km (1 mile).
Recommended pressures must be maintained for the best ride, top vehicle handling,
and minimum ti ...
Your vehicle has power-assisted brakes that adjust automatically through normal
usage.
In the event that the power-assisted brakes lose power because of a stalled engine
or some other reason, you can still stop your vehicle by applying greater force
to the brake pedal than you normally would. The ...