A new windscreen can look perfect and still leave a crucial job unfinished. If your vehicle has a forward-facing camera behind the glass, ADAS calibration in London may be needed after replacement to make sure its driver-assistance systems are reading the road accurately.
ADAS stands for Advanced Driver Assistance Systems. It covers features such as lane departure warning, lane-keep assist, automatic emergency braking, traffic-sign recognition and adaptive cruise control. These systems rely on cameras, sensors and radar working from the correct reference point. When a windscreen is replaced, the camera position and its view through the glass can change by a tiny amount – enough to affect how the system interprets lane markings, vehicles and hazards.
When does a replacement windscreen need ADAS calibration?
Not every vehicle needs calibration. Older cars and many vans do not have a camera mounted to the windscreen. However, if there is a camera unit near the rear-view mirror, or your dashboard displays driver-assistance settings and warnings, it is worth checking before booking the work.
Calibration is commonly required after a windscreen replacement where the vehicle manufacturer specifies it. It can also be necessary following collision damage, suspension work, wheel alignment changes or a fault affecting the camera or sensor. The correct requirement depends on the make, model, year and fitted equipment, not simply whether the vehicle has a camera.
A qualified technician should identify the vehicle’s specification before the replacement is completed. Skipping this check can leave warning lights on, disable safety features or, more concerningly, allow a system to operate with inaccurate information.
What happens during ADAS calibration in London?
The process uses diagnostic equipment to communicate with the vehicle and confirm that the camera or sensor is aligned to the manufacturer’s specification. Depending on the vehicle, this may be a static calibration, a dynamic calibration carried out on the road, or a combination of both.
First Call Windscreens can calibrate both windscreen-mounted ADAS cameras and front radar sensors, depending on the vehicle and its driver-assistance systems. We carry out static and dynamic ADAS calibration as required, using professional diagnostic and calibration equipment to ensure cameras and radar sensors are correctly aligned to the vehicle manufacturer’s specifications.
Static calibration uses precisely positioned targets and needs a suitable level, well-lit working area with enough clear space around the vehicle. Dynamic calibration involves a controlled drive while the vehicle learns its reference points. It is not a quick visual check and it should not be treated as an optional extra simply to reduce the price.
Once the work is complete, the technician checks for fault codes and confirms whether the calibration has passed. If there is an underlying fault with the camera, mounting, wiring or another system, calibration alone may not resolve it. In that case, you should be told clearly what has been found and what is needed next.
Can calibration be carried out at home or work?
Mobile windscreen fitting saves a trip to a workshop, particularly when your car, van or fleet vehicle is needed for work. In many cases, the glass can be fitted at your home, workplace or another suitable location, with no fitting charge for the mobile visit.
ADAS work has a little more to consider. A busy kerbside space, sloping drive or cramped car park may not provide the conditions required for static calibration. Dynamic calibration may be possible from a convenient location, but the route and road conditions still need to meet the vehicle’s requirements. A good provider will assess this beforehand rather than promise a process that cannot be completed properly on site.
For London drivers, that practical planning matters. It avoids replacing the screen at one location, then discovering the vehicle needs to be taken elsewhere before its safety systems can be signed off.
Why the right glass and fitting matter
The windscreen is more than a pane of glass. On vehicles with ADAS, it is part of the camera’s viewing path. The correct specification of glass, including any required shading, acoustic layer, heating elements or camera bracket, is essential. Poor-quality fitting, damaged trim or an incorrectly bonded camera mount can all create problems.
That is why a replacement should be handled by technicians who check the vehicle details rather than working from the glass shape alone. This applies just as much to working vans, taxis and fleet vehicles as it does to family cars. Downtime costs money, but putting a vehicle back on the road before necessary calibration is completed is a false economy.
What to tell your windscreen provider
When requesting a quote, mention any dashboard warnings, camera near the rear-view mirror and features such as lane assist or automatic braking. Have the registration number and vehicle details ready. This helps the technician arrange the right windscreen, confirm whether ADAS calibration is required and advise whether your chosen location is suitable.
If you are claiming on comprehensive insurance, the windscreen replacement and related calibration may be covered subject to your policy terms and excess. First Call Windscreens can deal directly with many major insurers, helping remove the paperwork while you focus on getting your vehicle back in service.
A properly fitted windscreen and correctly completed calibration give the systems you rely on the best chance of doing their job when it matters.