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:
CVVT (Continuously Variable Valve Timing) System. Description and Operation
Description
Continuous Variable Valve Timing (CVVT) system advances or retards the
valve timing of the intake and exhaust valve in accordance with the ECM control
signal which is calculated ...
The Other Fuses And Relays Component. Repair procedures
Inspection
Power Relay Test (Type B)
Check for continuity between the terminals.
A : Two turn unlock relay
1.
There should be continuity between the No.30 and No.87 ...
Steering wheel audio control
The steering wheel may incorporate audio control buttons.
CAUTION
Do not operate audio remote control buttons simultaneously.
1. VOLUME (VOL+/-)
Push the lever upward (+) to increase the volu ...
