
The mode selection knob controls the direction of the air flow through the ventilation system.
Air can be directed to the floor, dashboard outlets, or windshield. Five symbols are used to represent Face, Bi-Level, Floor, Floor-Defrost and Defrost air position.
Face-Level (B, D)

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, D, C, E)

Air flow is directed towards the face and the floor.
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, side window defrosters, and side vents.
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, and side vents.
Defrost-Level (A, D)

Most of the air flow is directed to the windshield with a small amount of air directed to the side vents.
Heating and Air Conditioning
MAX A/C-Level (B, D)Hyundai Elantra AD (2016-2020) Service Manual: General Information
General Information
The supplemental restraint system (SRS) is designed to
supplement the seat belt to help reduce the risk or severity of injury
to the driver and passenger by activating and deploying the driver,
passenger, side airbag and belt pretensioner in certain frontal or side
col ...
Hyundai Elantra AD (2016-2020) Service Manual: Sunroof Guide Repair procedures
Replacement
1.
Remove the sunroof assembly.
(Refer to Sunroof - "Sunroof Assembly")
2.
Remove the sunroof sunshade.
(Refer to Sunroof - "Sunroof Sunshade")
3.
Down the slide by pushing it and then remove the drip link assembly (A).
4.
Separate the drip link (B) and guide (A).
...