To get in or get out of the rear seat, the driver’s or front passenger’s seat should be folded and the seat should be slide.

Driver’s seat

Front passenger’s seat
1. Fold the front seatback by pulling up the walk-in seat lever and then slide the front seat forward.

2. Set the belt extension guide to position (3).
3. After getting in or getting out, slide the seat rearward while holding the seat cushion and then push the seatback rearward. And set the belt extension guide to position (1) or (2).
Seatback pocket
Rear seatKia Cee'd JD Service Manual: Seat Heater Switch Schematic diagrams
Circuit Diagram
[LHD]
[RHD]
...
Kia Cee'd JD Owners Manual: Closing the tailgate
❈ The actual luggage room in the vehicle may
differ from the illustration.
Lower and push down the tailgate firmly.
Make sure that the tailgate is securely
latched.
WARNING
Make sure your hands, feet and other
parts of your body are safely out of
the way before closing the tailgate. ...