The mode selection button controls the direction of the air flow through the ventilation system.
The air flow outlet direction is cycled as follows:
Face-Level (B, D, F)
Air flow is directed toward the upper body and face. Additionally, each outlet can be controlled to direct the air discharged from the outlet.
Bi-Level (B, C, D, E, F)
Air flow is directed towards the face and the floor.
Floor & Defrost (A, C, D, E)
Most of the air flow is directed to the floor and the windshield with a small amount directed to the side window defrosters.
Floor-Level (A, C, D, E)
Most of the air flow is directed to the floor, with a small amount of the air being directed to the windshield and side window defrosters.
Defrost-Level (A)
Most of the air flow is directed to the windshield with a small amount of air directed to the side window defrosters.
Instrument panel vents
The outlet vents can be opened () or closed () separately using the thumbwheel.
Also, you can adjust the direction of air delivered from these vents using the vent control lever as shown.
Hyundai Sonata LF 2014-2019 Owners Manual: Occupant Classification System (OCS)
Your vehicle is equipped with an Occupant Classification System (OCS) in the
front passenger's seat.
Main components of the Occupant Classification System
A detection device located within the front passenger seat cushion.
Electronic system to determine whether the passenger air bag systems sho ...
Hyundai Sonata LF 2014-2019 Service Manual: DCT (Dual Clutch Transmission) Repair procedures
Removal
1.
Remove the air cleaner assembly and air duct.
(Refer to Engine Mechnical System - "Air cleaner")
2.
Remove the TCM.
(Refe to Dual Clutch Transmission Control System - "TCM")
3.
Remove the battery and tray.
(Refer to Engine Electrical System - "Battery")
4.
Disconnect t ...