Some items need to be reset after the battery has been discharged or the battery has been disconnected. See chapter 3 for:
Hyundai Sonata LF 2014-2019 Service Manual: Temperature Control Actuator Description and Operation
Description
The temperature control actuator is located at the heater unit. It regulates the temperature by the procedure as follows.
The signal from the control unit adjusts the position of the
temperature door by operating the temperature switch. Then the
temperature will be regulated by ...
Hyundai Sonata LF 2014-2019 Owners Manual: Mode selection
The mode selection button controls the direction of the air flow through the
ventilation system.
Air can be directed to the floor, dashboard outlets, or windshield. Five symbols
are used to represent Face, Bi-Level, Floor, Floor-Defrost and Defrost air position.
Face-Level (B, D, F)
Air flow is ...