This warning light indicates the fuel tank is nearly empty. When it comes on, you should add fuel as soon as possible. Driving with the fuel level warning light on or with the fuel level below “E” can cause the engine to misfire and damage the catalytic converter.
Hyundai Tucson (LM) 2010-2015 Service Manual: Mode Control Actuator Repair procedures
Inspection
1.
Ignition "OFF”
2.
Disconnect the connector of mode control actuator.
3.
Verify that the mode control actuator operates to the defrost
mode when connecting 12V to the terminal 3and grounding terminal 4.
4.
Verify that the mode control actuator operates to the vent mo ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Fuel Pump Repair procedures
Removal
1.
Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")
2.
Remove the rear seat.
(Refer to Body - “Seat”)
3.
Remove the fuel pump service cover (A).
4.
Disconnect the fuel pump connector (A) and the fu ...