For proper maintenance, safety, and maximum fuel economy, you must always maintain recommended tire inflation pressures and stay within the load limits and weight distribution recommended for your vehicle.

All specifications (sizes and pressures) can be found on a label attached to the driver's side center pillar.
Tires and Wheels
Recommended Cold Tire Inflation PressuresHyundai Elantra AD (2016-2020) Service Manual: Repair procedures
Adjustment
Glass Adjustment
•
Check the glass run channel for damage or deterioration, and replace it if necessary.
1.
Remove the front door trim.
(Refer to Front Door - "Front Door Trim")
2.
Separate the mounting plug hole (A) from the front door module.
...
Hyundai Elantra AD (2016-2020) Service Manual: Repair procedures
General Inspection
After or before servicing the EPS system, perform the
troubleshooting and test procedure as follows. Compare the system
condition with normal condition in the table below and if abnormal
symptom is detected, perform necessary remedy and inspection.
Test Conditions Symp ...