The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory.
Check the antifreeze protection and coolant level at least once a year, at the beginning of the winter season and before traveling to a colder climate.
Hyundai Elantra AD (2016-2020) Service Manual: Intake Actuator Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the intake actuator connector.
3.
Verify that the intake actuator operates to the fresh position when connecting 12V to terminal 3 and grounding terminal 4.
Verify that the intake actuator operates to the recirculation position w ...
Hyundai Elantra AD (2016-2020) Owners Manual: Owner Maintenance Schedule
When you stop for fuel:
Check the engine oil level.
Check coolant level in the engine coolant reservoir.
Check the windshield washer fluid level.
Check for low or under-inflated tires.
WARNING
Be careful when checking your engine coolant level when the engine is hot.
This may result ...