Kia Sportage: Starting the engine with a smart key1.Carry the smart key or leave it inside the vehicle.
2.Make sure the parking brake is firmly applied
3.Automatic Transaxle - Place the transaxle shift lever in P (Park). Depress the brake pedal fully.
4.Press the ENGINE START/STOP button while depressing the brake pedal.
It should be started without depressing the accelerator.
5.Do not wait for the engine to warm up while the vehicle remains stationary.
Start driving at moderate engine speeds. (Steep accelerating and decelerating should be avoided.)
WARNING - Unintended vehicle movement
Never leave the smart key in the vehicle with children or vehicle occupants who are unfamiliar with the vehicle operation. Pushing the ENGINE START/STOP button while the smart key is in the vehicle may result in unintended engine activation and/or unintended vehicle movement.

Do not press the ENGINE START/ STOP button for more than 10 seconds except when the stop lamp fuse is blown.
START/RUN
Manual transaxle35R Clutch Control Solenoid Valve(35R/C_VFS): Description and Operation
Description
35R Clutch control solenoid valve(35R/C) is attached to the
valve body. This variable force solenoid valve directly controls the
hydraulic pressure inside the 35R Clutch. ...
Releasing the parking brake
Foot type
To release the parking brake, depress the parking brake pedal a second time while
applying the foot brake. The pedal will automatically extend to the fully released
position.
Hand ...