Cleaning a windscreen without adding glare or damage

A windscreen can look clean in daylight yet show smears under low sun or headlights.

A windscreen can look clean in daylight yet show smears under low sun or headlights. Good visibility depends on both sides of the glass, suitable products and a method that does not damage surfaces or equipment.

Understand the situation

Follow the vehicle handbook and the cleaning product instructions, especially near cameras, coatings and displays. Work while parked and check the finished view from the driving position. Replace or clean materials that are spreading residue. If glass is damaged, obtain an appropriate assessment rather than covering the problem.

Before you practise

• Use a product suitable for the actual surface
• Keep cleaning materials clean and stored securely
• Inspect the view from the driver's seat afterwards

A focused practice session

Before a lesson, compare the view through the windscreen from inside and outside the car. Identify smears, condensation or damage separately, then choose the appropriate remedy. Check that mirrors and camera areas remain clear without disturbing their settings or mounting.

A situation to discuss

After cleaning, a windscreen still shows a broad smear when seen from the driving position. Check whether residue is on the inside, outside or cleaning cloth before adding more product. Follow the surface and product instructions and avoid disturbing cameras or coatings. Finish the inspection from the seat where the view matters. A photograph taken outside the car is not a sufficient test of the driver's visibility.