The child safety lock is provided to help prevent children seated in the rear from accidentally opening the rear doors. The rear door safety locks should be used whenever children are in the vehicle.
The child safety lock is located on the edge of each rear door. When the child safety lock is in the lock position, the rear door will not open if the inner door handle is pulled.
To lock the child safety lock, insert a screwdriver (1) into the hole and turn it to the lock position.
To allow a rear door to be opened from inside the vehicle, unlock the child safety lock.
WARNING
If children accidently open the rear doors while the vehicle is in motion, they could fall out of the vehicle. The rear door safety locks should always be used whenever children are in the vehicle.
Hyundai Elantra AD (2016-2020) Owners Manual: Detecting sensor
The rear radars are located inside the rear bumper for detecting the side and
rear areas. Always keep the rear bumper clean for proper operation of the system.
NOTICE
The system may not work properly when the bumper has been damaged, or
if the rear bumper has been replaced or repaired.
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Hyundai Elantra AD (2016-2020) Service Manual: Components and Components Location
Components
1. Front bumper cover 2. Front bumper side bracket [LH]3. Front bumper side bracket [RH]
...