Hyundai Sonata LF: Engine Mechanical System / Cooling System

Cylinder Block Repair procedures

Removal Engine removal is required for this procedure. (Refer to Engine and transaxle assembly removal in this group) 1. MT : Remove the flywheel...

Coolant Repair procedures

Replacement And Air Bleeding     Never remove the radiator cap when the engine is hot. Serious scalding could be caused by hot fluid under high pressure escaping from the radiator...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: RCV Control Solenoid Valve Description and Operation

Description RCV (Recirculation Valve) Control Solenoid Valve is installed on the cooling pan motor top and operates the RCV actuator which controls the by-pass passage of the turbo-charger compressor. When the throttle valve is closed during engine running [Tip-out], crash noise of the impeller will occur because of rapid increasing of the boost pressure...

Hyundai Sonata LF 2014-2019 Service Manual: Brake Booster Repair procedures

Brake Booster Operating Test For simple checking of the brake booster operation, carry out the following tests. 1. Run the engine for one or two minutes, and then stop it. If the pedal depresses fully the first time but gradually becomes higher when depressed succeeding times, the booster is operating properly, if the pedal height remains unchanged, the booster is inoperative...