When new wiper blades that still leave streaks occurs, first check whether the car remains safe to control. Replace damaged blades and avoid driving in conditions where vision is poor. If the symptom is mild and no critical warning appears, note the conditions and arrange a timely inspection.
The owner’s manual gives the vehicle-specific response for warning lights. Clean the windscreen with a suitable product and check blade fit and arm pressure. Do not continue a test drive when the car’s behavior becomes unsafe.
Quick educational note
For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.
How to use this information
This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.