If the LED light does not operate, have the vehicle checked by an authorized HYUNDAI dealer.
Hyundai Tucson (LM) 2010-2015 Owners Manual: Before starting
Make sure the hood, the tailgate, and the doors are securely closed and
locked.
Adjust the position of the seat and steering wheel.
Adjust the inside and outside rearview mirrors.
Verify all the lights work.
Fasten your seatbelt. Check that all passengers have fastened their seatbelts. ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Power Window Motor Repair procedures
Inspection
Front Power Window Motor
1.
Remove (-) negative battery terminal.
2.
Remove the front door trim.
(Refer to the BD group - "Front door")
3.
Disconnect the connector from the motor.
(A : Safety, B : Standard)
4.
Connect the motor terminals directly to battery voltage (12 ...