Operating Door Locks from Outside the Vehicle
Mechanical key

If you lock the driver's door with a mechanical key, all vehicle doors will lock. If you unlock the driver's door with a mechanical key, the driver's door will unlock and the passenger doors will unlock according to the current two press unlock setting.
Once the doors are unlocked, they may be opened by pulling the door handle.
When closing the door, push the door by hand. Make sure that doors are closed securely.
Remote key

To lock the doors, press the Door Lock button (1) on the remote key. Press the Door Unlock button (2) on the remote key, the driver's door will unlock. If you press the Door Unlock button on the remote key again within four seconds, then all the doors will unlock.
Once the doors are unlocked, they may be opened by pulling the door handle.
When closing the door, push the door by hand. Make sure that doors are closed securely.
Information
Immobilizer System
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Inspection
ESC System Bleeding
This procedure should be followed to ensure adequate bleeding
of air and filling of the ESC unit, brake lines and master cylinder
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1.
Remove the reservoir cap and fill the brake reservoir with brake fluid.
•
If the ...
Hyundai Elantra AD (2016-2020) Service Manual: Glove Box Upper Cover Housing Components and Components Location
Component Location
1. Glove box upper cover housing
...