Follow either of these procedures:
Hyundai Sonata LF 2014-2019 Service Manual: Head Lamps Description and Operation
HID Head Lamp
1.
Bulb
(1)
Elements
Xenon gas : Xenon gas activates the initial reaction for rapid illuminating.
Molybdenum electrode: anode arcing
Metal halide salts: color composing component
(2)
Lightening principle
When Xenon gas and metal halide salt will discharge the molybdenum a ...
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.
...