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: Rear Cross Member Repair procedures
Removal
1.
Disconnect the battery negative cable.
2.
Remove the wheel and tire.
Tightening torque:
107.9 - 127.5 N·m (11.0 - 13.0 kgf·m, 79.6 - 94.0 lb·ft)
...
Kia Niro 2017 (DE HEV) Service Manual: Active Air Flap (AAF) Troubleshooting
Troubleshooting
Symptoms
Possible Causes
Remedy
Warning illuminated
"Check active air flap system"
Active Air Flap System Fail
(Flap stuck)
• Inspect the flap and remove the foreign substa ...