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: Repair procedures
Fuel Pressure Test (Low pressure system)
1.
Release the residual pressure in fuel line.
(Refer to the Fuel Delivery System - Repair Procedures - "Release Residual Pressure in Fuel Line").
When removing the fuel pump fuse, a Diagnostic Trouble Code
(DTC) may occur. Dele ...
Hyundai Sonata LF 2014-2019 Owners Manual: Battery Recharging
WARNING
Always follow these instructions when recharging your vehicle’s battery to
avoid the risk of SERIOUS INJURY or DEATH from explosions or acid burns:
Before performing maintenance or recharging the battery, turn off all
accessories and place the ignition switch to the LOCK/OFF position. ...
