Contamination of either the windshield or the wiper blades with foreign matter can reduce the effectiveness of the windshield wipers.
Common sources of contamination are insects, tree sap, and hot wax treatments used by some commercial car washes. If the blades are not wiping properly, clean both the window and the blades with a good cleaner or mild detergent, and rinse thoroughly with clean water.
NOTICE
To prevent damage to the wiper blades, arms or other components, do not:
Information
Commercial hot waxes applied by automatic car washes have been known to make the windshield difficult to clean.
Information
Wiper blades are consumable item and normal wear of the wipers may not be covered by your vehicle warranty.
Wiper blades
Blade replacementHyundai Kona (OS) 2018-2026 Service Manual: Blower Motor Repair procedures
Inspection
1.
Connect the battery voltage and check the blower motor rotation.
2.
If the blower motor does not operate well, substitute with a known-good
blower motor and check for proper operation.
...
Hyundai Kona (OS) 2018-2026 Service Manual: Engine Coolant Temperature Sensor (ECTS) Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Remove the ECTS.
(Refer to "Removal")
3.
After immersing the thermistor of the sensor into engine coolant, measure
resistance between the EC ...