If the LED light does not operate, have the vehicle checked by an authorized HYUNDAI dealer.
Hyundai Tucson (LM) 2010-2015 Owners Manual: Operating door locks from inside the vehicle
With the door lock button:
To unlock a door, push the door lock button (1) to the “Unlock” position.
The red mark (2) on the door lock button will be visible.
To lock a door, push the door lock button (1) to the “Lock” position. If
the door is locked properly, the red mark (2) ...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Lower Anchors and Tether for Children (LATCH) System
The LATCH system holds a child restraint during driving and in an accident.
This system is designed to make installation of the child restraint easier and
reduce the possibility of improperly installing your child restraint. The LATCH
system uses anchors in the vehicle and attachments on the ch ...