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: Knock Sensor (KS) Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the intake manifold (Refer to “Intake And Exhaust System” in EM group). 3. Disconnect the injector connector (A). 4. Remove the installation bolt (B), and then remove the sensor from ...

Hyundai Sonata LF 2014-2019 Owners Manual: Tires and Wheels
WARNING Tire failure may cause loss of vehicle control resulting in an accident. To reduce risk of SERIOUS INJURY or DEATH, take the following precautions: Inspect your tires monthly for proper inflation as well as wear and damage. The recommended cold tire pressure for your vehicle can be found ...

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