Follow either of these procedures:
Hyundai Sonata LF 2014-2019 Service Manual: Intake Air Temperature Sensor (IATS) Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the IATS connector.
3.
Measure resistance between the IATS terminals 3 and 4.
4.
Check that the resistance is within the specification.
Specification: Refer to “Specification”
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Hyundai Sonata LF 2014-2019 Owners Manual: SPORT mode
SPORT mode manages the driving dynamics by automatically adjusting the steering
effort, the engine and transmission control logic for enhanced driver performance.
When SPORT mode is selected by pressing the DRIVE MODE button, the SPORT
indicator will illuminate.
Whenever the engine is restart ...