The sensor detects the distance to the vehicle ahead.
If the sensor is covered with dirt or other foreign matter, the vehicle to vehicle distance control may not operate correctly.
Always keep the area in front of the sensor clean.
Kia Niro 2017 (DE HEV) Service Manual: Front Door Belt Inside Weatherstrip Repair procedures
Replacement
1.
Remove the front door trim.
(Refer to Front Door - "Front Door Trim")
2.
Remove the front door belt inside weatherstrip (A).
3.
Install in the reverse order of removal.
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Kia Niro 2017 (DE HEV) Service Manual: Components and components location
Component Location Index
[Engine Room]
1. Ambient Temperature Sensor
2. Receiver-drier
3. Condenser
4. Compressor
5. Discharge hose
6. The service port (voltage)
7. The service port (high pressure)
8. A/C Pressure Transducer (APT)
...