

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: Specifications
Specifications
ItemsSpecificationsRated voltageDC 12VOperating voltageDC 9 ~ 16VOperating temperature-22°F ~ 167°F (-30°C ~ 75°C)Dark currentSMK : 3mA / Keyless : 4mA
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Hyundai Elantra AD (2016-2020) Service Manual: Stop Lamp Switch Repair procedures
Adjustment
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the lower crash pad.
(Refer to Body - "Crash Pad")
3.
Confirm the gap between stop lamp switch and bracket.
Stop lamp clearance (A) : 1.0 ~ 2.0 mm (0.04~ 0.08 in.)
4.
If the gap betw ...