The above situations are normal conditions when the active eco system is activated to improve fuel efficiency.
Active ECO operation
Limitation of Active ECO operation: Instrument Cluster Display Main Menu - Vehicles With: 12.3 Inch Instrument
Cluster Display Screen
Depending on your vehicle options, some
menu items can appear different or not at
all.
Note: For your safety, some features are
speed-dependent and could be unavailable
when your vehicle is above a certain speed.
...
Kia Cee'd JD Service Manual: Side Airbag (SAB) Module Description and operation
Description
The Side Airbags (SAB) are installed inside the front seat and protects the
driver and passenger from danger when side crash occurs. The SRSCM determines
deployment of side airbag by using Side Impact Sensor (SIS) signal.
...