Hyundai Tucson: Cruise control operation / Cruise control will be canceled when

Hyundai Tucson (LM) 2010-2015 Owners Manual / Driving your vehicle / Cruise control system / Cruise control operation / Cruise control will be canceled when

Depressing the brake pedal.
Pressing the CANCEL switch located on the steering wheel.
Pushing the cruise ON/OFF button. Both the CRUISE indicator and the SET indicator will turn OFF.
Moving the shift lever into N (Neutral).
Decreasing the vehicle speed lower than the memory speed by 9 mph (15 km/h).
Decreasing the vehicle speed to less than approximately 25 mph (40 km/h).
The ESC is operating.
Downshifting to the 2nd gear with sports mode.

✽ NOTICE

Each of the above actions will cancel cruise control operation (the SET indicator light in the instrument cluster will go off), but only pressing the cruise ON/OFF button will turn the system off. If you wish to resume cruise control operation, push the lever up (to RES+) located on your steering wheel. You will return to your previously preset speed, unless the system was turned off using the cruise ON/OFF button.

To temporarily accelerate with the cruise control ON

Depress the accelerator pedal.When you take your foot off the accelerator, the vehicle will return to the previously set speed. If you push the lever (1) down (to SET-) at the increased speed, the ...

To resume preset cruising speed

Push the lever (1) up (to RES+). If the vehicle speed is over 25 mph (40 km/h), the vehicle will resume the preset speed. ...

Other information:

Hyundai Tucson (LM) 2010-2015 Service Manual: Passenger Airbag (PAB) Module Repair procedures
Removal 1. Disconnect the battery negative cable and wait for at least three minutes before beginning work. 2. Remove the glove box housing. (Refer to the Body group- crash pad). 3. Disconnect the passenger airbag connector and remove the PAB mounting bolt. 4. Remove the crash pad. ( ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Components and Components Location
Component Location x Button start type : Front windshield deicer, Rear glass defogger and outside mirror heater functions are joined together one switch.x General key type : Front windshield deicer switch is located in left air vent separately. 1. Windshield deicer relay2. Windshield ...