Hyundai Sonata: OFF mode

Push the OFF button to turn off the air climate control system. However, you can still operate the mode and air intake buttons as long as the ignition switch is in the ON position.
The vented air will be at the last set temperature. Adjust the desired vented temperature setting accordingly before pressing the OFF button.
Air conditioning
Push the A/C button to turn the air conditioning system on (indicator light will
illuminate).
Push the button again to turn the air conditioning system off. ...
Climate information screen selection button
To change the screen into the climate information screen, press the climate information
screen selection button. ...
See also:
Transaxle Control Module (TCM). Repair procedures
Replacement
In the case of the vehicle equipped with immobilizer
or button engine start system, perform "Key Teaching&quo ...
Seat Belt Pretensioner (BPT). Repair procedures
Removal
1.
Disconnect the battery negative cable, and wait for at least three
minutes before beginning work.
2.
Using a flat-tip screwdr ...
Adding equipment to or modifying your air bag-equipped vehicle
If you modify your vehicle by changing your vehicle's frame, bumper system, front
end or side sheet metal or ride height, this may affect the operation of your vehicle's
air bag system. ...
