The Forward Collision-Avoidance Assist (FCA) system is designed to help detect and monitor the vehicle ahead or help detect a pedestrian in the roadway through radar signals and camera recognition to warn the driver that a collision is imminent, and if necessary, apply emergency braking.
WARNING
Take the following precautions when using the Forward Collision- Avoidance Assist (FCA) system:
 Limitations of the System
Limitations of the System System Setting and Activation
System Setting and ActivationHyundai Elantra AD (2016-2020) Service Manual: Special Service Tools
   Special Service Tools
Tool (Number and Name)IllustrationApplicationRKE Battery Checker(09954-2P100)Measuring the RKE battery voltageCorrection jig for LDWS or LKAS(09890-3V100)Correction of LDWS (Lane Departure Warning System) or LKAS (Lane keeping assist system)
 ...
   
Hyundai Elantra AD (2016-2020) Service Manual: In-car Sensor Description and Operation
   Description
The In-car air temperature sensor is built in the heater & A/C control unit.
The sensor contains a thermistor which measures the 
temperature of the inside. The signal decided by the resistance value 
which changes in accordance with perceived inside temperature, is 
delivered ...