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: Photo Sensor Repair procedures
Inspection
1.
Turn the ignition switch ON.
2.
Connect the GDS.
3.
Emit intensive light toward the photo sensor using a lamp, and check the output voltage change.
4.
The voltage will rise with higher intensive light and reduce with lower intensive light.
1. Auto light signal2. Auto ...
Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Inspection
1.
After disconnecting the vapor hose from the PCV valve, remove the PCV valve.
2.
Reconnect the PCV valve to the vapor hose.
3.
Inspect the PCV vlave operation.
(1)
Run the engine at idle.
(2)
Put a finger on the open end of the PCV valve.
(3)
Make sure that intake ...
