The armrest is located in the center of the rear seat. Pull the armrest down by using the strap from the seatback to use it.
If your car is not equipped with a rear armrest, the rear cup holders are located at the back of the center console.
CAUTION
Hyundai Elantra AD (2016-2020) Service Manual: Drive Belt Tensioner Components and Components Location
Components
1. Drive belt tensioner
...
Hyundai Elantra AD (2016-2020) Service Manual: Front Door Latch Components and Components Location
Component Location
1. Front door latch
...