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: Components and Components Location
Components
1. Cowl side trim 2. Front door scuff trim 3. Rear door scuff trim 4. Front pillar trim 5. Front door step trim 6. Rear door step trim 7. Center pillar upper trim 8. Center pillar lower trim 9. Rear pillar trim
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Hyundai Elantra AD (2016-2020) Service Manual: ESC OFF Switch Description and Operation
Description
1.
The ESC OFF switch is for the user to turn off the ESP system.
2.
The ESC OFF lamp is on when ESP OFF switch is engaged. ...