Hyundai Kona (OS) 2018-2021 Owners Manual: Non-operational conditions of Parking Distance Warning (Reverse) system
The Parking Distance Warning (Reverse) system may not operate normally when:
Moisture is frozen to the sensor.
Sensor is covered with foreign matter, such as snow or water, or the sensor
cover is blocked.
There is a possibility of the Parking Distance Warning (Reverse) system malfunction
when ...
Hyundai Kona (OS) 2018-2021 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.
Note that some driving conditions or climates may cause a brake squeal when ...