The vehicle’s front and rear seats have adjustable headrests.The headrests provide comfort for passengers, but more importantly they are designed to help protect passengers from whiplash and other neck and spinal injuries during an accident, especially in a rear impact collision.
WARNING
To reduce the risk of serious injury or death in an accident, take the following precautions when adjusting your headrests:

CAUTION
To prevent damage, NEVER hit or pull on the headrests.
Armrest
Front seat headrestHyundai Tucson (LM) 2010-2015 Owners Manual: Radio : FM, AM OR XM
Seek
Press the
key
Shortly pressing the key (under 0.8 seconds): Changes the frequency.
Pressing and holding the key (over 0.8 seconds): Automatically searches
for the next frequency.
Preset Seek
Press the ~
key
Shortly pressing the key (under 0.8 seconds): ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Rear Driveshaft Components and Components Location
Components
1. Tone wheel2. BJ joint3. BJ boot4. BJ boot big part band5. BJ boot small part band6. Shaft7. TJ boot small part band8. TJ boot big part band9. TJ boot10. Snap ring11. Circlip12. TJ assembly
...