To sound the horn, press the area indicated by the horn symbol on your steering wheel (see illustration). The horn will operate only when this area is pressed.
CAUTION
Do not strike the horn severely to operate it, or hit it with your fist. Do not press on the horn with a sharp-pointed object.
Hyundai Tucson (LM) 2010-2015 Service Manual: Fuel Tank Pressure Sensor (FTPS) Schematic Diagrams
Circuit Diagram
(M/T)
(A/T)
...
Hyundai Tucson (LM) 2010-2015 Service Manual: 4WD ECU Schematic Diagrams
Circuit Diagram
4WD ECU Connector
PinFunction1CAN communication line (Low)2CAN communication line (High)3-4Pressure sensor signal(+)5-6Lock mode switch7Oil pressure motor B8Oil pressure motor A9-10-11Pressure sensor(Input)12Input sensor signal(-)13Battery power 14Ground15IG power16-17-1 ...