ADAS Calibration After Windscreen Replacement: Why the Warning's On and What to Do
Had a windscreen replaced and been told you need ADAS calibration? The fitter is right. Some glass companies run that step themselves; many pass it on, especially from a mobile fit. The forward camera behind the new glass has shifted, and the systems it feeds, lane assist and automatic emergency braking among them, run degraded or switch off until it's recalibrated. Here's why it happens, what to check first, and what the fix costs: front camera calibration at £162 inc VAT (£135 +VAT).
No warning does not mean no calibration is needed
For a car with a driver-assistance camera looking through the windscreen, the glass-replacement procedure determines the required checks and calibration. Refitting the original camera does not automatically remove that requirement. Keep the glass invoice and any calibration result.
Why camera checks matter after new glass
On vehicles with a windscreen-mounted driver-assistance camera, the glass and camera installation form part of the view the system uses. Replacement glass, removal and refitting can trigger model-specific checks and calibration. The requirement can apply even when the original camera is reused and no warning appears.
Glass specification, camera mounting and the viewing area must be suitable. A failed procedure can have several causes; it does not establish that all aftermarket glass is unsuitable or that replacing the screen again will solve it.
The windscreen camera, front radar and parking cameras are different components. Include the complete repair history if the glass was replaced as part of collision work.
Pick your make
Make-specific pricing, common faults, and the calibration tools your car needs.
- By makeRead more
Volkswagen
Golf, Polo, Tiguan and Passat. Front Assist faults after a windscreen swap, plus the aftermarket-glass story that catches VAG owners out.
- By makeRead more
BMW
1 Series, 2 Series, X3 and 4 Series. KAFAS camera behind the windscreen, driving assistant and lane departure warnings after a glass change.
Before you enquire
- 1
Read the exact warning
Follow the warning instructions in your handbook. Photograph the message while safely parked and include any other warnings. Do not rely on an affected assistance feature.
- 2
Describe recent work
Include glass, bumper, suspension, electrical or replacement-part work, and when the warning began. Missing details do not prevent an enquiry.
- 3
Keep earlier findings
Send relevant scan, repair and calibration reports. Do not repeatedly clear codes or test the system by deliberately triggering its warnings.
- 4
Explain practical concerns
Include your location and any unfinished repairs or concerns about driving. Seek qualified advice before travelling if you are unsure whether the car is safe to drive.
Which work may be needed
Include the glass invoice, whether the original camera was refitted and any calibration already attempted. Calibration can be required without a warning. Glass specification, installation and relevant faults may need attention before the procedure can complete.
A diagnostic scan reads available fault information. Its findings, repair instructions and any physical checks guide the next step; further investigation may be needed. The centre pre-scan price is £54 including VAT when that operation is required.
Front-camera calibration is £162 including VAT at a centre. Replacement configuration is a separate operation, listed at £229.20 including VAT. It is not a replacement-and-calibration package, does not supply or fit a part, and is not automatically required again if the installer has already completed it.
The vehicle-specific method can involve static work, a prescribed driving procedure or both. Calibration cannot repair damaged hardware, wiring or an unsuitable installation. The quote covers the work identified for your car; unsuccessful work or a return visit may carry charges.
ADAS calibration prices
A windscreen job is normally one line on the quote: the camera behind the new screen. Rates are the same at every service centre, per system, shown inc VAT with the net figure alongside. Your total is confirmed in writing before anything is booked.
Calibration — per system
Coding a replaced part to your vehicle
- When your job needs a diagnostic pre-scan, it's £54 inc VAT (£45 +VAT), itemised separately. It reads available fault information; finding the cause may require further investigation. A post-scan is a separate operation.
- Two or more systems in one visit: the highest-priced system is full price, each additional system is 35% off at a centre. Scans aren't part of the discount. Front camera and front radar together come to £267.30 inc VAT (£222.75 +VAT).
- Replacement configuration and calibration are different operations. The work required depends on the vehicle and what the installer has already completed. Configuration prices do not include supplying or fitting a replacement part, or an automatic calibration bundle.
- Unsuccessful work, further investigation or a return visit may carry charges, including at a service centre. The appointment terms and written quote set out the work and applicable charges before booking.
- Mobile calibration is available for garages and bodyshops with workshop conditions. Ask us.
Frequently asked questions
The centre front-camera calibration rate is £162 including VAT. Glass supply and fitting are not included. Scans, replacement configuration or additional work are separate when required. Include the fitter's record so the quote concerns the work still needed.
Most mobile windscreen vans carry basic camera target equipment, but not the kit for every make. On VW Group, BMW, Honda and Mercedes, calibration needs a controlled workshop, manufacturer-compatible scan tools and verified lighting. If the fitter's setup doesn't cover your car, or the calibration fails on aftermarket glass, they refer the customer to a specialist. That's the gap we fill.
Yes, and it's the cleanest sequence. Pre-booking means the fitter knows the step is coming and the calibration slots in right after the fit instead of after warnings appear, often within the week, depending on centre availability. Send the fitting date when you enquire and we line up the slot. The calibration itself is the single front-camera line, £162 inc VAT (£135 +VAT).
The viewing area, glass specification and camera mounting must meet the vehicle's requirements. A failed calibration does not establish that all aftermarket glass is unsuitable, or that the screen alone caused the failure. Include the invoice and previous findings before arranging more work.
Combined jobs run in one calibration visit. A windscreen plus a radar replacement, wheel alignment plus glass, or front-end bodywork plus a windscreen are all common after a single incident. Each system books at its own line on the rate card, and where two or more calibrate in the same visit at a centre, the highest-priced one is full rate with 35% off each additional system; diagnostic scans sit outside that discount. Tell us what's been done when you enquire and the workshop preps the right targets up front.
Coverage and authorisation depend on your policy and agreed repair. Check the repair estimate for calibration already included before booking it separately. Keep the quote and existing findings for the insurer or repairer; a new appointment is not automatically reimbursed.
The windscreen camera and front radar are different components, but the complete repair history matters. Include collision or other work performed with the glass replacement. A battery event or scan alone does not establish a lost radar reference. The vehicle-specific procedure determines any additional calibration.
Book your post-windscreen calibration
Send your registration and what's been done. We come back with the price, the nearest service centre, and the soonest slot.