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 Service Manual: Speaker Repair procedures
Inspection
1.
Troubleshooting for Speaker
(1)
Basic inspection of speaker
Inspect the sound from speaker after verifying that the
speaker mounting screws is removed and the wiring connector is connected
precisely to remove vibration transmitted from body trims and
surrounding parts.
...
Hyundai Sonata LF 2014-2019 Service Manual: Master Cylinder Components and Components Location
Components
1. Reservoir cap2. Reservoir3. Pin4. Master cylinder
...