The sensor is to maintain a certain distance from the vehicle in front. However, the smudged sensor lens with foreign substances, such as snow and rain, adversely affects the sensing performance. It may even temporarily cancel the AEB. Always keep the sensor lens clean.
Kia Niro 2017 (DE HEV) Service Manual: Components and components location
Components
1. Bezel
2. Lower cover
3. Damper
4. Steering wheel
5. Remote control switch
6. Wire ring
...
Kia Niro (DE HEV) Owners Manual: Operating precautions for catalytic converters
WARNING - Fire
A hot exhaust system can ignite flammable items under your vehicle. Do
not park the vehicle over or near flammable objects, such as grass, vegetation,
paper, leaves, etc.
The exhaust system and catalytic system are very hot while the engine
is running or immediately aft ...