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Illuminated engine start/stop button

Whenever the front door is opened, the engine start/stop button will illuminate for your convenience. The light will go off after about 30 seconds when the door is closed.
When all doors are closed and you lock the vehicle by using the transmitter or the smart key, the light will go off immediately.
Kia Stinger (CK) 2018-2023 Owner's Manual: Engine Coolant Temperature Sensor (ECTS)
Specifications Specification Temperature Resistance (kΩ) °C °F -40 -40 48.14 -20 -4 14.13 - 16.83 0 32 5.79 20 68 2.Description and operation Description 1. Function • By detecting the pressure, temperature, acceleration, and battery condition, transmit information to ECU by a wireless RF. • Wheel location is recognized by comparing the Wheel Pulse of ECS (ABS) and acceleration values of the sensor (High Line).