Why the Windshield Can Affect Driver-Assistance Systems
Many vehicles use a camera mounted behind the windshield near the rearview mirror for functions such as lane-departure warning, lane keeping, automatic emergency braking, traffic-sign recognition or adaptive lighting.
The camera’s position relative to the road matters. Removing and replacing the windshield can change that relationship enough that the vehicle manufacturer calls for calibration.
Static, Dynamic and Combined Calibration
Static calibration is typically performed with the vehicle positioned in a controlled space using targets or specialized equipment. Dynamic calibration is performed while driving under specified conditions with a scan tool connected. Some vehicles require both.
The required procedure depends on the vehicle manufacturer, model and equipment. A servicing company should identify the applicable procedure rather than assuming every vehicle is the same.
Questions to Ask Before Windshield Replacement
- Does my vehicle have a windshield-mounted ADAS camera?
- Does the manufacturer require calibration after replacement?
- Will calibration be performed on-site or at another facility?
- Is calibration included in the quote?
- Will I receive documentation or scan results when applicable?
Do Not Ignore Warning Messages After Replacement
If an ADAS warning light, camera fault or driver-assistance message appears after windshield service, contact the servicing company promptly. Do not rely on a system that is reporting a fault.
Calibration is only one part of a complete installation. Correct glass, camera brackets, mounting and vehicle-specific procedures also matter.