Hyundai Sonata: Fuel Delivery System / Fuel Pressure Sensor (FPS) Description and Operation
The fuel pressure sensor (FPS) is installed on the top of the
low pressure fuel pump and measures the pressure in the low pressure
fuel line.
Based on the fuel pressure measured by the FPS and the amount
of fuel consumed, the fuel pump control module (FPCM) determines
whether to activate the low pressure fuel pump.
After activating the low pressure fuel pump, the FPS
continues to provide the fuel pressure information to the FPCM and the
FPCM keeps controlling the fuel flow rate using the feedback information
from the FPS.

Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
emove the rear seat cushion.
( Refer to Body - "Rear Seat Assembly")
3.
Remove the fuel pump ser ...
Specification
Pressure [KPa (kgf/cm?, psi)]Output Voltage (V)50 (0.51, 7.3)0.3600 (6.12, 87.0)2.51100 (11.2, 159.5)4.5
...
Other information:
Hyundai Sonata LF 2014-2019 Owners Manual: Driver assist system
Rear View Camera
The Rear View Camera will activate when the engine is running and the shift lever
is in the R (Reverse) position.
This is a supplemental system that shows behind the vehicle through the navigation
display while backingup.
WARNING
The Rear View Camera is not a safety device. It o ...
Hyundai Sonata LF 2014-2019 Owners Manual: Auto Door Lock/Unlock Features
Impact sensing door unlock system
All doors will be automatically unlocked when an impact causes the air bags to
deploy.
Speed sensing door lock system
All doors will be automatically locked when vehicle speed exceeds 9 mph (15 km/h).
All of the doors will be automatically unlocked after the engine ...