FCA produces warning messages, warning alarms, and emergency braking based on the level of risk of a frontal collision, such as when a vehicle ahead suddenly brakes, or when the system detects that a collision with a pedestrian is imminent.
Collision Warning (First warning)

This warning message appears on the LCD display with a warning chime. Additionally, some vehicle system intervention occurs by the engine management system to help decelerate the vehicle.
- Your vehicle speed may decelerate moderately.
- The FCA system limitedly controls the brakes to preemptively mitigate impact in
a collision.
- If you select "Warning Only", the FCA system activates and produces only warning
alarms in accordance with the collision risk levels.You should control the brake
directly because the FCA system do not control the brake.
Emergency Braking (Second warning)

This warning message appears on the LCD display with a warning chime.
Additionally, some vehicle system intervention occurs by the engine management system to help decelerate the vehicle.
- The FCA system limitedly controls the brakes to preemptively mitigate impact
in a collision. The brake control is maximized just before a collision.
- If you select "Warning Only", the FCA system activates and produces only warning
alarms in accordance with the collision risk levels.You should control the brake
directly because the FCA system do not control the brake.
Brake operation
CAUTION
WARNING
The FCA braking control cannot completely stop the vehicle nor avoid all collisions. The driver should hold the responsibility to safely drive and control the vehicle.
WARNING
The FCA system logic operates within certain parameters, such as the distance from the vehicle or pedestrian ahead, the speed of the vehicle ahead, and the driver's vehicle speed. Certain conditions such as inclement weather and road conditions may affect the operation of the FCA system.
WARNING
Never deliberately drive dangerously to activate the system.
System Setting and Activation
FCA Sensor (Front Radar/Front Camera)Hyundai Elantra AD (2016-2020) Owners Manual: High Beam Assist (HBA)
The High Beam Assist (HBA) is a system that automatically adjusts the headlamp
range (switches between high beam and low beam) according to the brightness of other
vehicles and road conditions.
Operating condition
1. Place the headlamp switch in the AUTO position.
2. Turn on the high beam b ...
Hyundai Elantra AD (2016-2020) Service Manual: Specifications
Specifications
Fuel Delivery System
ItemsSpecificationFuel TankCapacity50 lit. (13.2 U.S.gal., 52.8 U.S.qt., 44.0 Imp.qt.)Fuel FilterTypePaper typeFuel Pressure RegulatorRegulated Fuel Pressure355 ~ 365 kPa (3.4 ~ 3.7 kgf/cm?, 48.6 ~ 52.9 psi)Fuel PumpTypeElectrical, in-tank typeDriven byEle ...