Other information:
Hyundai Sonata LF 2014-2019 Owners Manual: Warning messages
WARNING
Whenever leaving the vehicle or parking, always come to a complete stop
and continue to depress the brake pedal. Move the shift lever into the P (Park)
position, press the EPB switch, and press the Engine Start/Stop button to the
OFF position. Take the Smart Key with you when exiting ...
Hyundai Sonata LF 2014-2019 Service Manual: Water pump Repair procedures
Removal
1.
Loosen the drain plug (A), and drain the engine coolant. Remove the radiator cap to drain with speed.
System is under high pressure when the engine is hot.To avoid
danger of releasing scalding engine coolant, remove the cap only when
the engine is cool.
...