Hyundai Sonata: Maintenance / Engine Coolant

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.

Engine Oil
Checking the Engine Oil Level 1. Follow all of the oil manufacturer’s precautions. 2. Be sure the vehicle is on level ground in P (Park) with the parking brake set and the wheels blocked. 3. Turn t ...

Checking the Engine Coolant Level
WARNING Never remove the radiator cap or the drain plug while the engine and radiator are hot. Hot coolant and steam may blow out under pressure, causing serious injury. Turn the engine off and wai ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components [Manual Seat Type] 1. Front seat headrest2. Front seat headrest guide3. Front seat back board4. Front seat back frame assembly5. Front seat back pad6. Front seat back heater7. Front seat cushion frame assembly8. Front seat shield cushion pad9. Front seat cushion heater mat10. Heig ...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Compession Pressure Inspection     If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure. 1. Make sure the oil in the crankcase is of the correct viscosity and at the correct level and that the battery is correctly ...

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