Modern vehicles increasingly rely on camera-based Advanced Driver Assistance Systems (ADAS) mounted behind the windscreen. These systems support critical functions such as Lane Keeping Assist, Forward Collision Warning, Automatic Emergency Braking, and Traffic Sign Recognition. Because the windscreen directly affects the camera’s position and viewing angle, ADAS calibration is required whenever the windscreen or related components are disturbed.
This article explains when windscreen ADAS calibration is required, why it matters, and what can happen if calibration is skipped.
Windscreen replacement is the most common trigger for ADAS calibration.
Even when the replacement glass meets OEM specifications, slight variations in:
- Glass thickness
- Curvature
- Mounting position
- Adhesive bonding
can alter the camera’s alignment. As a result, OEMs and industry standards generally require ADAS calibration after every windscreen replacement on vehicles equipped with front-facing cameras.
Calibration is not only required for full replacement. If the original windscreen is:
- Removed and reinstalled
- Temporarily detached during body repair
ADAS calibration is still recommended. Any change in the camera’s reference position may affect system accuracy.
ADAS calibration is required when:
- The front-facing camera is replaced
- The camera bracket or mounting is adjusted
- The camera is removed for repair or inspection
Even minor changes in camera orientation can lead to incorrect object detection or lane recognition.
- Windscreen position
- Vehicle body geometry
- Camera mounting angles
After accidents involving the front of the vehicle, ADAS calibration should be performed as part of the repair process, especially if body panels, suspension, or structural components are affected.
Some ADAS systems rely on precise vehicle geometry to function correctly. Changes to:
- Suspension components
- Ride height
- Wheel alignment
may alter the camera’s reference angle relative to the road. OEM guidelines for many vehicles recommend checking or performing ADAS calibration after such adjustments.
Calibration may be required if:
- ADAS warning indicators are displayed
- Diagnostic trouble codes related to camera systems are present
- The system reports limited or unavailable functionality
In these cases, calibration is often part of the diagnostic and repair procedure.
Certain vehicle software updates or control unit resets may require ADAS recalibration. This is especially common when:
- ADAS control modules are replaced
- Software parameters affecting camera processing are updated
Always refer to OEM service documentation to confirm calibration requirements.
Many vehicle manufacturers explicitly state that ADAS calibration is mandatory after windscreen-related work. In some regions, failure to perform required calibration may:
- Void warranties
- Create liability issues for repair shops
- Compromise vehicle safety compliance
Following OEM calibration procedures helps ensure both safety and legal protection.
Skipping required calibration can result in:
- Incorrect lane detection
- Delayed or false collision warnings
- Reduced effectiveness of emergency braking
- Increased accident risk
Because ADAS systems directly influence vehicle behavior, calibration is a critical safety step, not an optional service.
Windscreen ADAS calibration is required whenever the windscreen, camera system, or vehicle geometry is affected. Windscreen replacement, camera adjustment, accidents, suspension changes, and system faults are all common triggers for recalibration.
For glass shops, body repair centers, and ADAS service providers, understanding when windscreen ADAS calibration is required is essential for ensuring vehicle safety, meeting OEM requirements, and maintaining professional service standards.
Return
VIEW All