Push the A/C button to manually turn the system on (indicator light will illuminate) and off.
Hyundai Sonata LF 2014-2019 Owners Manual: Engine Compartment Panel Fuse Replacement
1. Turn the engine off.
2. Turn all other switches OFF.
3. Remove the fuse panel cover by pressing the tap and pulling up.
4. Check the removed fuse; replace it if it is blown. To remove or insert the
fuse, use the fuse puller in the engine compartment fuse panel.
5. Push in a new fuse of the same ...
Hyundai Sonata LF 2014-2019 Service Manual: Relay Box (Passenger Compartment) Repair procedures
Fuse Inspection
1.
Be sure there is no play in the fuse holders, and that the fuses are held securely.
2.
Are the fuse capacities for each circuit correct?
3.
Are there any blown fuses?
If a fuse is to be replaced, be sure to use a new fuse of the
same capacity. ...