Kia Sportage: Warning Messages / Key not detected (for smart key system)

- This warning message illuminates if the smart key is not detected when
you press the Engine Start/Stop Button.
This warning message illuminates if the smart key is not in the vehicle
when you press the Engine Start/Stop Button.
It means that you should always have the smart key with you.
...
This warning message illuminates if you can not operate the Engine Start/Stop
Button when there is a problem with the Engine Start/Stop Button system.
It means that you could start the engin ...
Other information:
Inspection
Front Seat Heater
1.
Check for continuity and measure the resistance between terminals No
4 and No 6.
Standard value
Driver / Assists (cushion + back) : 1.65Ω±10%/23°C
...
Component Location
1. Front door window glass
...