With the door lock button:

✽ NOTICE
If a power door lock ever fails to function while you are in the vehicle try one or more of the following techniques to exit: Operate the door unlock feature repeatedly (both electronic and manual) while simultaneously pulling on the door handle. Operate the other door locks and handles, front and rear. Lower a front window and use the mechanical key to unlock the door from outside.
With the central door lock switch:

When pressing the front portion (1) of the switch, all vehicle doors will lock.
When pressing the rear portion (2) of the switch, all vehicle doors will unlock.
WARNING
The doors should always be fully closed and locked while the vehicle is in motion. If the doors are unlocked, the risk of being thrown from the vehicle in a crash is increased.
WARNING
Do not leave children or animals unattended in your vehicle. An enclosed vehicle can become extremely hot, causing death or serious injury to unattended children or animals who cannot escape the vehicle. Children might operate features of the vehicle that could injure them, or they could encounter other harm, possibly from someone gaining entry to the vehicle.
WARNING
Always secure your vehicle.
Leaving your vehicle unlocked increases the potential risk to you or others from someone hiding in your vehicle. To secure your vehicle, while depressing the brake, move the shift lever to the P (Park) position, engage the parking brake, and place the ignition switch in the LOCK/OFF position, close all windows, lock all doors, and always take the key with you.
WARNING
Opening a door when something is approaching may cause damage or injury. Be careful when opening doors and watch for vehicles, motorcycles, bicycles or pedestrians approaching the vehicle in the path of the door.
Smart key
Auto door lock/unlock featuresHyundai Tucson (LM) 2010-2015 Service Manual: Valve Body Components and Components Location
Components Location
1. PCV adjust screw2. Solenoid valve3. Oil temperature sensor4. Accumulator5. Under drive brake (UD/B) pressure flow hole6. Low & reverse brake (LR/B) pressure flow hole
Valve Body Flow
1. To cooler2. From cooler3. Lubrication(rear)4. Overdrive pressure5. Reducing ...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Securing a child restraint with the LATCH anchors system
To install a LATCH-compatible child restraint in either of the rear outboard
seating positions:
1. Move the seat belt buckle away from the lower anchors.
2. Move any other objects away from the anchors that could prevent a secure connection
between the child restraint and the lower anchors.
3 ...