Some items need to be reset after the battery has been discharged or the battery has been disconnected. See chapter 3 for:
Hyundai Tucson (LM) 2010-2015 Service Manual: Brake Pedal Repair procedures
Removal
1.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad")
2.
Pull down steering column shaft after removing bolts and nuts.
3.
Disconnect the stop lamp switch connector (A).
4.
Remove the brake pedal member mounting nuts (B).
Tightening torque:
16.7 ~ 25.5 N.m ( ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Starter Relay Repair procedures
Inspection
1.
Disconnect the battery negative terminal.
2.
Remove the fuse box cover.
3.
Remove the starter relay (A).
4.
Using an ohmmeter, check that there is continuity between each terminal.
TerminalValueMeasure30 - 871Mx or HigherIf there is continuity, replace the relay.
...