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Camera behind your mirror? What it means for a windscreen replacement

Many newer cars have a camera or sensor mounted on the windscreen for lane keeping and emergency braking. What that means when the glass is replaced.

Short answer

If your car has a camera or sensor behind the rear-view mirror, it is part of the driver assistance system (ADAS) and it looks through the windscreen. The replacement glass must suit that system, and the camera may need to be recalibrated after fitting. Tell your installer about it when you ask for a quote.

What is ADAS?

Advanced driver assistance systems include lane keeping, lane departure warnings, adaptive cruise control and autonomous emergency braking. Many use a forward-facing camera mounted on the windscreen.

Why does the windscreen matter?

The camera looks through a specific area of the glass. The right glass, fitted correctly, keeps its view accurate.

What is recalibration?

Recalibration re-aims the camera to the vehicle maker's specification after the glass is changed. Whether it is needed depends on the vehicle.

What should I tell you when I ask for a quote?

The make, model and year, and whether there is a camera or sensor behind the mirror. Our quote form asks this so we can quote accurately.

Frequently asked questions

How do I know if my car has ADAS?

Look behind the rear-view mirror from outside the car. A black housing with a lens usually means a camera.

Does every new windscreen need calibration?

Not every car. It depends on the vehicle and its systems.

Need help with cars?

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