Kia K900: Pre-Safe Seat belt (PSB)
The pre-safe seat belt will activate and pull the seat belt into tighter contact against the occupant's body if a collision is detected or during certain driving maneuvers.
CAUTION
The pre-safe seat belt activates only when the passenger is wearing his/her seat belt.

The pre-safe seat belt warning light will illuminate if there is a problem with your pre-safe seat belt.
Have the system checked if:
The pre-safe seat belt system operates as below
Pre-tensioner seat belt
Seat belt precautionsPursuant to Code of Federal Regulations, Title 47, Part 15 ("FCC Rules")
Operation is subject to the following two conditions:
1.This device may not cause harmful interference, and
2.This device must accept any interference received, including interference that
may cau ...
Air conditioning
Press the A/C button to turn the air conditioning system on (indicator light
will illuminate).
Press the button again to turn the air conditioning system off. ...
Detecting sensor
The sensors are located inside of the rear bumper.
Always keep the rear bumper clean for the system to work properly. ...