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
Smart keyHyundai Elantra AD (2016-2020) Owners Manual: Power Outlet
â– Type A
â– Type B
The power outlet is designed to provide power for mobile telephones or other
devices designed to operate with vehicle electrical systems.
The devices should draw less than 180 W (Watts) with the engine running.
WARNING
Avoid electrical shocks. Do not place your finge ...
Hyundai Elantra AD (2016-2020) Service Manual: Troubleshooting
Standard Flow of Diagnostic Troubleshooting
Notes With Regard To Diagnosis
The phenomena listed in the following table are not abnormal.
ConditionExplanationSystem check soundWhen starting the engine, a thudding sound can sometimes be heard coming from inside the engine compartment. This is bec ...