If the fuel filler door does not open using the remote fuel filler door release button, you can open it manually. Pull the release located on the left side of the trunk compartment.
Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Adjustment
Glass Adjustment
•
Check the glass run channel for damage or deterioration, and replace them if necessary.
1.
Remove the front door trim.
(Refer to Front Door - "Front Door Trim")
2.
Remove the front door window glass mounting hole plug (A).
...
Hyundai Sonata LF 2014-2019 Owners Manual: ECO mode
When the Drive Mode is set to ECO mode, the engine and transmission control logic
are changed to maximize fuel efficiency.
When the ECO mode is selected by pressing the DRIVE MODE button, the ECO
indicator will illuminate.
If the vehicle is set to ECO mode, when the engine is turned OFF and r ...