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.
Hyundai Elantra AD (2016-2020) Service Manual: Front Rear Parking Assist System Switch Repair procedures
Removal
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Put on gloves to prevent hand injuries.
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When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.
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Use a plastic panel removal tool to remove interior ...
Hyundai Elantra AD (2016-2020) Service Manual: Knee Airbag (KAB) Module Components and Components Location
Components
1. Knee Airbag (KAB)
...