ADAS Calibration Explained
ADAS stands for Advanced Driver Assistance System. Modern vehicles are equipped with multiple cameras and sensors that relay feedback to the driver. Some systems take control of the car to make steering corrections and can also apply the brakes if needed. These systems work together to help keep drivers alert and safe on our busy roads.
Sonar, Lidar and radar are working together with multiple cameras when driving. Sonar bumper and mirror sensors let the driver know something is in their blind spot. Multi camera systems give an overhead view of the vehicle and its surroundings. Front facing cameras control the lane departure and pedestrian alert systems. All of these sensors need to be calibrated anytime that they are removed or serviced.
Types of Calibration
For windshield replacement there are 3 types of calibration. Each manufacturer has its own requirements.
Static:
Static calibrations must be performed in a controlled environment. A calibration rig is used along with specific target boards for each manufacturer placed at various distances. Level floors and proper lighting is crucial to calibration success.
Dynamic:
Dynamic calibrations are performed on the road with proper conditions. Good visibility, clearly marked lanes and proper traffic flow are needed. Here, the camera uses the lane lines and road signs along with the cars around it to automatically aim.
Dual (Static + Dynamic):
Some manufacturers need both a static and dynamic calibration to get back to proper working condition. Brands like Honda, Toyota and Subaru often need dual calibrations. These combine both target aiming and driving aiming to achieve this.
Why is calibration needed after windshield replacement?
Correct ADAS calibration is a technical science. Proper calibration is a must when replacing any windshield with a front facing camera. There is no way to put a windshield in the exact position that it was in before removal. Any change in camera angle can greatly affect the safe operation of the vehicle.
After replacement the calibration corrects the pitch, yaw and roll angles to make sure the camera receives the correct information. A 1-degree variation in any of these angles can drastically change the reliability of the safety systems. Improperly aimed cameras can cause false positives that tell the car to brake or steer when not needed. They can also create false negatives that fail to warn about dangers like lane departure or pedestrians crossing the road. A properly calibrated camera will keep you and your passengers safe if your ADAS is ever needed.