Sitting in a reclined position when the vehicle is in motion can be dangerous. Even when buckled up, the protection of your restraint system (seat belts and air bags) is greatly reduced by reclining your seatback.
WARNING
NEVER ride with a reclined seatback when the vehicle is moving. Riding with a reclined seatback increases your chance of serious or fatal injuries in the event of a collision or sudden stop. Drivers and passengers should ALWAYS sit well back in their seats, properly belted, and with the seatbacks upright.
Seat belts must be snug against your hips and chest to work properly.
When the seatback is reclined, the shoulder belt cannot do its job because it will not be snug against your chest. Instead, it will be in front of you. During an accident, you could be thrown into the seat belt, causing neck or other injuries.
The more the seatback is reclined, the greater chance the passenger’s hips will slide under the lap belt or the passenger’s neck will strike the shoulder belt.

Seat cushion height (for driver’s seat)
To change the height of the seat cushion:

Lumber support (for driver’s seat, if equipped)
To adjust the lumber support:
1. Press the front portion of the switch to increase support, or the rear portion of the switch to decrease support.
2. Release the switch once it reaches the desired position.
Manual adjustment
Power adjustmentHyundai Tucson (LM) 2010-2015 Service Manual: Heater & A/C Control Unit(Dual) Repair procedures
Self Diagnosis
1.
Self-diagnosis process
2.
How to read self-diagnostic code
After the display panel flickers three times every 0.5
second, the corresponding fault code flickers on the setup temperature
display panel every 0.5 second and will show two figures. Codes are
displayed in n ...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Radio mode
Basic Mode Screen
1. Mode Display Displays currently operating mode.
2. Frequency Displays the current frequency.
3. Preset Displays current preset number [1] ~[6].
4. Preset Display Displays preset buttons.
5. Info Displays broadcast information.
6. A.store Automatically saves frequencies ...