If the Smart Key does not operate normally, you can lock or unlock the door by using the mechanical key.

Press and hold the release button (1) and remove the mechanical key (2). Insert the mechanical key in to the key hole on the door.
To reinstall the mechanical key, put the key into the hole and push it until a click sound is heard.
Start-up
Loss of a smart keyHyundai Tucson (LM) 2010-2015 Owners Manual: Fog light bulbs
1. Remove the front bumper under cover.
2. Reach your hand into the back of the front bumper.
3. Disconnect the power connector from the socket.
4. Remove the bulb-socket from the housing by turning the socket counter clockwise
until the tabs on the socket align with the slots on the housing.
...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Sound Settings
Sound Settings
Press the key
Select [Sound]
Select [Sound Setting]
Use the ,
,
,
buttons to adjust the Fader/Balance
settings.
Use the ,
buttons to adjust the Bass/Middle/Treble
settings.
Press the button to reset.
SDVC (Speed Dependent Volume Control)
Press th ...