Push the OFF button of the front to turn off the air climate control system. You can still operate the mode and air intake buttons as long as the ignition switch is in the ON position.
Hyundai Elantra AD (2016-2020) Service Manual: Occupant Classification System (OCS) Components and Components Location
Components
1. Occupant Classification System (OCS) Unit2. Occupant Classification System (OCS) Sensor
Occupant Classification System (OCS) Unit ...
Hyundai Elantra AD (2016-2020) Service Manual: Positive Crankcase Ventilation (PCV) Valve Repair procedures
Removal
1.
Disconnect the vapor hose (A).
2.
Remove the PCV valve (B).
Inspection
1.
Insert a thin stick (A) into the PCV valve (B) from the threaded side to check that the plunger movement.
•
If the plunger does not move (PCV valve is clogged), clean or re ...