Information
Make sure that all warning lights are OFF after starting the engine. If any light is still ON, this indicates a situation that needs attention.
Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad")
3.
Remove the steering column upper & Lower shroud.
4.
Remove the ignition switch (A) and disconnecting the Key Warning / immobilizer connector.
5.
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Hyundai Sonata LF 2014-2019 Owners Manual: Temperature control
Turn the knob to the right to increase the fan speed and airflow. Turn the knob
to the left to decrease fan speed and airflow.
The temperature will increase or decrease by 1°F/0.5°C for each button press.
When set to the lowest temperature setting, the air conditioning will operate continuously ...