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. Check the horn regularly to be sure it operates properly.
CAUTION
Kia Niro 2017 (DE HEV) Service Manual: Height Adjuster Components and components location
Component Location
1. Height Adjuster
...
Kia Niro (DE HEV) Owners Manual: How to check
Use a good quality gauge to check tire pressure. You can not tell if your tires
are properly inflated simply by looking at them. Radial tires may look properly
inflated even when they're underinflated.
Check the tire's inflation pressure when the tires are cold. - "Cold" means ...