All warning lights are checked by placing the ignition switch in the ON position (do not start the engine).
Any light that does not illuminate should be checked by an authorized HYUNDAI dealer.
After starting the engine, check to make sure that all warning lights are off. If any are still on, this indicates a situation that needs attention.
Hyundai Tucson (LM) 2010-2015 Service Manual: Power Seat Control Switch Repair procedures
Inspection
1.
With the power seat switch in each position, make sure that
continuity exists between the terminals below. If continuity is not as
specified, replace the power seat switch.
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the power seat recliner cover ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Heater & A/C Control Unit(Manual) Components and Components Location
Components
Connector Pin Function
ConnectorPin NoFunctionConnectorPin NOFunctionConnector(A)1Middle HighConnector(B)1Tail Lamp (ILL+)2-2Battery 3GND3Mode Actuator (VENT)4High4Mode Actuator (DEF)5Middle Low5Temp Actuator (COOL)6Low6Temp Actuator (WARM)x7Intake Actuator (FRE)8Intake Actuator (REC) ...