Dynamic & Static
There are two forms of ADAS calibration, Dynamic & Static. General descriptions of these processes are provided below, but the exact procedures vary significantly from one vehicle make/model to the next. In all cases, the automaker’s specified procedures and instructions must be precisely followed. Before & After any calibration is done a DTC (diagnostic trouble code) scan must be completed ensuring that the calibration process created no error messages with other vehicle systems.
In-Shop (Static) Calibration
A vehicle with this type of calibration cannot be done mobile, it requires a controlled In-Shop environment to be performed correctly. During an initial claim we will cover what type of calibration may be needed with a customer and agent.
Static sensor calibration begins with establishing the vehicle thrust line. Automakers specify a variety of manual measuring methods and special tools to perform this part of the process.
Special aiming targets are positioned in precise locations relative to the thrust line and camera. The targets must be at a specified height, and many are designed for use with special adjustable mounting stands. Where a sensor is offset from the car’s centerline, the targets must be correspondingly offset as well. Some vehicles use a target that is placed on the hood, while most target locations are 6 to 25 feet from the vehicle.
The final step in static ADAS sensor calibration is to initiate the aiming process using a factory scan tool or aftermarket equivalent. The process then occurs automatically, and the scan tool indicates when it has been successfully completed.
Following static calibration, many sensors require a follow-up dynamic process as described below. Even when a dynamic calibration is not required, a test drive is recommended to validate calibration and ensure that the ADAS do not set any diagnostic trouble codes when in operation. Some systems will not set DTCs or generate other error messages until the car has been driven a certain distance.
On-Road (Dynamic) Calibration
A vehicle with this type of calibration can still be completed mobile, in the field. During an initial claim we will cover specifics of this style calibration as well. Oftentimes, calibration of this type cannot be done if rain or snow obscures lane markings.
Dynamic calibration involves initiating the process with a factory scan tool, or aftermarket equivalent, and then driving the car on relatively straight roads with clear lane markings for 5 to 30 minutes at specified speeds until the scan tool indicates calibration is complete. On some cars, a warning light or message on the dash will go out when calibration has been successful.
Certain systems calibrate best when there is minimal surrounding traffic, but others will calibrate more rapidly when many objects are detected by the sensor. Vehicle manufacturer calibration instructions will provide information on the optimal process.