KIA Optima Hybrid 2013 - Manual (Page 223)

Driving your vehicle
2 5
Be sure the exhaust system does
not leak.
The exhaust system should be checked
whenever the vehicle is raised to change
the oil or for any other purpose. If you
hear a change in the sound of the
exhaust or if you drive over something
that strikes the underneath side of the
car, have the exhaust system checked as
soon as possible by an authorized Kia
dealer.
WARNING - Engine
exhaust
Do not inhale exhaust fumes or
leave your engine running in a
enclosed area for a prolonged time.
Exhaust fumes contain carbon
monoxide, a colorless, odorless
gas that can cause unconscious-
ness and death by asphyxiation.
WARNING - Open
trunk
Do not drive with the trunk open.
Poisonous exhaust gases can enter
the passenger compartment
If you must drive with the trunk
open proceed as follows:
1. Close all windows.
2. Open side vents.
3. Set the air intake control at
"Fresh", the air flow control at
"Floor" or "Face" and the fan at
the highest speed.