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.
Hyundai Tucson (LM) 2010-2015 Service Manual: Steering Gear box Repair procedures
Replacement
1.
Remove the front wheel & tire.
Tightening torque :
88.3 ~ 107.9N.m (9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft)
Be careful not to damage to the hub bolts when removing the front wheel & tire.
2.
Disconnect the stabilizer link (B) with the front ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Rear Shock Absorber Components and Components Location
Components
1. Self locking nut2. Bracket assembly3. Bumper rubber4. Dust cover5. Shock absorber
...