Hyundai Elantra AD (2016-2020) Owners Manual: Detecting sensor
The rear radars are located inside the rear bumper for detecting the side and
rear areas. Always keep the rear bumper clean for proper operation of the system.
NOTICE
The system may not work properly when the bumper has been damaged, or
if the rear bumper has been replaced or repaired.
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Hyundai Elantra AD (2016-2020) Service Manual: Fuel Tank Pressure Sensor (FTPS) Description and Operation
Description
Fuel Tank Pressure Sensor (FTPS) is a component of the
evaporative emission control system and is installed on the fuel tank,
the fuel pump, or the canister. It checks the purge control solenoid
valve operation and detects a leakage of the system. ...