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
Component Location
1. BCM (Body Control Module)2. Ultrasonic sensor
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Rear parking assist control unit function is built in BCM (Body Control Module).
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Hyundai Elantra AD (2016-2020) Service Manual: Description and Operation
Description
Adaptive Front-lighting System (AFLS)
AFLS(Adaptive Front-lighting System)is a headlamp orientation
control system that takes into account both steering angle and vehicle
speed to orient the headlamps to an angle that provides better nighttime
visibility.
Variable conditions ...