Hyundai Sonata LF 2014-2019 Owners Manual: With the central door lock switch
When pressing the () switch (1),
all vehicle doors will lock.
When pressing the () switch (2),
all vehicle doors will unlock.
If the key is in the ignition switch and any door is opened, the doors will not
lock even though the lock button (1) of the central door lock switch is pressed.
If the sm ...
Hyundai Sonata LF 2014-2019 Service Manual: Refrigerant Line Repair procedures
Replacement
1.
If the compressor is marginally operable, run the engine at
idle speed, and let the air conditioning work for a few minutes, then
shut the engine off.
2.
Disconnect the negative (-) battery terminal.
3.
Recover the refrigerant with a recovery/charging station.
4.
...