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.
Start-up
Loss of a smart keyHyundai Tucson (LM) 2010-2015 Owners Manual: Interior light bulb replacement
1. Using a flat-blade screwdriver, gently pry the lens from the interior lamp
housing.
2. Remove the bulb by pulling it straight out.
3. Install a new bulb in the socket.
4. Align the lens tabs with the interior lamp housing notches and snap the lens
into place.
WARNING
Use care not to ...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Parking brake & brake fluid warning light
Parking brake warning
This light is illuminated when the parking brake is applied with the ignition
switch in the START or ON position.
The warning light should go off when the parking brake is released while the
engine is running.
The parking brake warning chime will sound to remind you th ...