Be sure the exhaust system does not leak
Check the exhaust system whenever the vehicle is raised for changing the oil or any other purpose.
If you hear a change in the sound of the exhaust, or if you drive over something that strikes the underbody of the vehicle, have the exhaust system inspected by an authorized Kia dealer as soon as possible.
Engine exhaust
Do not inhale exhaust fumes or leave your engine running in an enclosed area for a prolonged period of time. Exhaust fumes contain carbon monoxide, a colorless and odorless gas that can cause unconsciousness and death by asphyxiation.
Open liftgate
Do not drive with the liftgate open. Poisonous exhaust fumes can enter the passenger compartment. If you must drive with the liftgate open, proceed as follows:
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Close all windows.
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Open the side vents.
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Set the air intake control to external, the air flow control to “Floor” or “Face,” and the fan to the highest speed.