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.
NOTICE
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 Sonata LF 2014-2019 Service Manual: Hood Insulator Pad Repair procedures
Replacement
1.
Using a clip remover, detach the clips, and remove the hood insulator pad (A).
•
Be careful not to scratch the hood panel.
2.
Install in the reverse order of removal.
•
Replace any damaged clips.
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Hyundai Sonata LF 2014-2019 Owners Manual: Disc Brakes Wear Indicator
When your brake pads are worn and new pads are required, you will hear a high
pitched warning sound from your front or rear brakes. You may hear this sound come
and go or it may occur whenever you depress the brake pedal.
Please remember some driving conditions or climates may cause a brake squeal ...