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.
Hyundai Elantra AD (2016-2020) Service Manual: Engine Room Under Cover Repair procedures
Removal and Installation
Engine Room Under Cover
1.
Remove the engine room under cover (A).
Tightening torque:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)
2.
Install in the reverse order of removal. ...
Hyundai Elantra AD (2016-2020) Service Manual: Troubleshooting
Failure Diagnosis
1.
In principle, ESC and TCS controls are prohibited in case of ABS failure.
2.
When ESC or TCS fails, only the failed system control is prohibited.
3.
However, when the solenoid valve relay should be turned off in case of ESC failure, refer to the ABS fail-safe.
4.
...