The ESC OFF indicator will illuminate when the ignition switch is turned ON, but should go off after approximately 3 seconds. To switch to ESC function off, press the ESC OFF button. The ESC OFF indicator will illuminate indicating the ESC is deactivated.
Hyundai Tucson (LM) 2010-2015 Service Manual: DBC Switch Repair procedures
Inspection
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the crash pad side switch assembly.
(Refer to Body - "Crash Pad")
3.
Check the continuity between the switch terminals as the DBC switch is engaged. ...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Manual heating and air conditioning
The heating and cooling system can be controlled manually by pushing buttons
or turning knob(s) other than the AUTO button. In this case, the system works sequentially
according to the order of buttons or knob(s) selected.
✽ NOTICE
When pressing any button (or turning any knob) except the AU ...