If the interior glass surfaces of the vehicle become fogged (that is, covered with an oily, greasy or waxy film), they should be cleaned with glass cleaner. Follow the directions on the glass cleaner container.
NOTICE
Do not scrape or scratch the inside of the rear window. This may result in damage to the rear window defroster grid.
Cleaning the lap/shoulder belt webbing
Emission control systemHyundai Kona (OS) 2018-2026 Owners Manual: Checking the engine coolant level
Check the condition and connections of all cooling system hoses and heater hoses.
Replace any swollen or deteriorated hoses.
The coolant level should be filled between MAX and MIN (or F (Full) and L (Low))
marks on the side of the coolant reservoir when the engine is cool.
If the coolant level is ...
Hyundai Kona (OS) 2018-2026 Service Manual: Troubleshooting
Troubleshooting
Trouble Symptom
Probable cause
Remedy
Vehicle pulls to one side
Scoring of driveshaft ball joint
Replace
Wear, rattle or scoring of wheel bearing
Replace
...