

To lock the doors, press the button on the outside door handle while carrying the Smart Key with you or press the Door Lock button on the Smart Key.
Press the button on the driver's outside door handle while carrying the Smart Key with you or press the Door Unlock button on the Smart Key, the driver's door will unlock. If you press the button on the front passenger's outside door, all 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
Door Locks
Operating Door Locks from Inside the VehicleHyundai Elantra AD (2016-2020) Service Manual: Starter Repair procedures
Removal
1.
Disconnect the battery negative terminal.
2.
Remove the battery tray.
(Refer to Engine Electrical System - "Battery")
3.
Remove the air duct and air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
4.
Disconnect the starter cable (A) from the B te ...
Hyundai Elantra AD (2016-2020) Service Manual: Specifications
Specifications
ItemSpecificationMaster cylinderTypeTandemCylinder I.D.22.22 mmPiston stroke45 ± 1 mm (1.77 ± 0.039 in)Fluid level switchProvidedBrake boosterType10" SingleBoosting ratio8.0 : 1Front disc brakeTypeVentilated discDisc O.D.O 280 mm (11.02 in)Disc thickness23 mm (0.91 in)Caliper p ...