

Curtain air bags are located along both sides of the roof rails above the front and rear doors.
They are designed to help protect the heads of the front seat occupants and the rear outboard seat occupants in certain side impact collisions.
The curtain air bags are designed to deploy during certain side impact collisions, depending on the crash severity.
The side and curtain air bags on both sides of the vehicle may deploy if a rollover or possible rollover is detected.
The curtain air bags are not designed to deploy in all side impact or rollover situations.
WARNING
To reduce the risk of serious injury or death from an inflating curtain air bags, take the following precautions:
Side air bags
How Does the Air Bag System Operate?Hyundai Elantra AD (2016-2020) Service Manual: Crash Pad Lower Panel Repair procedures
Replacement
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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 int ...
Hyundai Elantra AD (2016-2020) Service Manual: Heater Unit Components and Components Location
Component Location
1. Heater unit assembly
Compoents
1. Shower duct [LH]2. Heater core cover3. Heater core & Seal assembly4. Mode actuator5. Temperature control actuator [LH]6. PTC Heater7. Heater unit pad8. Air guide [LH]9. Heater case [LH]10. Evaporator core assembly11. Heater core ...