Hyundai Elantra AD (2016-2020) Owners Manual: Shift-Lock System. Shift-Lock Release. Parking
Shift-Lock System
For your safety, the dual clutch transmission has a shift-lock system which prevents
shifting the transmission from P (Park) into R (Reverse) unless the brake pedal
is depressed.
To shift the transmission from P (Park) into R (Reverse):
1. Depress and hold the brake pedal.
...
Hyundai Elantra AD (2016-2020) Owners Manual: Key Ignition Switch
WARNING
To reduce the risk of SERIOUS INJURY or DEATH, take the following precautions:
NEVER allow children or any person who is unfamiliar with the vehicle
to touch the ignition switch or related parts. Unexpected and sudden vehicle
movement can occur.
NEVER reach through the steering ...