Kia Optima 2017 Owner's Manual page 446

Driving your vehicle
Moving up a steep grade from a
standing start
To move up a steep grade from a
standing start, depress the brake pedal,
shift the shift lever to D (Drive). Select
the appropriate gear depending on load
weight and steepness of the grade, and
release the parking brake. Depress the
accelerator gradually while releasing
the brake pedal.
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