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: CVVT Oil Control Valve (OCV) Schematic Diagrams
Circuit Diagram
(M/T)
(A/T)
...
Hyundai Tucson (LM) 2010-2015 Service Manual: AVN Head Unit Components and Components Location
Components
AVN (A/V & Navigation) Head Unit Connector
Connector Pin Information
No.Connector AConnector BConnector C1-MM CAN High-2Parking V VIDEO--3Parking V GND--4Rear camera P groundSteering wheel remoconMTS/TMU ground5SPDIF ground-RS422 Tx +6SPDIF (+)IGNRS422 Tx -7ALT LAUX VIDEORS422 ...