Your vehicle speed can be reduced due to a vehicle in the adjacent lane.
Apply the accelerator pedal and select the appropriate set speed. Check to be sure that the road conditions permit safe operation of the Smart Cruise Control.
Hyundai Sonata LF 2014-2019 Service Manual: Fuel Pressure Control Valve Repair procedures
Inspection
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the fuel pressure regulator valve connector.
3.
Measure resistance between the fuel pressure regulator valve terminals 1 and 2.
4.
Check that the resistance is within the specifica ...
Hyundai Sonata LF 2014-2019 Service Manual: Front Door Module Components and Components Location
Component Location
1. Front door module
...