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: Exhaust Manifold Repair procedures
Removal and Installation
1.
Remove the engine cover.
2.
Disconnect the battery negative terminal.
Tightening torque:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 3.0 ~ 4.4 lb-ft)
3.
Disconnect the front oxygen sensor connector (A) and then remove it from the bracket.
4.
Remove the front muf ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Repair procedures
Fuel Pressure Test (Low pressure system)
1.
Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")
When removing the fuel pump relay, a Diagnostic Trouble Code
(DTC) may occur. Delete the code with the GDS ...