An ADAS calibration is a process carried out to correctly align the cameras and sensors of a car so that its ADAS system can work as intended. ADAS sensor calibration is required whenever a sensor’s aiming is disturbed in any way. This can occur in a collision, even a minor fender bender, or be a byproduct of common service work such as windshield replacement, suspension repairs or wheel alignment. Calibration is also called for whenever a sensor or its mounting bracket is removed and replaced, there is a change in tire size, a front airbag deploys and deflects off the windshield, or repairs are made to a car roof that has a sensor bracket mounted to it. Finally, sensor calibration is necessary when there is a related DTC in the car’s computer memory, or an automaker releases a technical service bulletin with instructions that calibration be done as part of another repair. Sensor replacement and calibration are frequently part of collision repairs. Automakers recommend that body shops now perform a complete diagnostic scan on every vehicle before repairs are begun, and then again after the job is complete. Doing so will help the auto body shop better understand the scope of any problems before work starts, and then confirm that all issues have been resolved, ADAS sensor calibrations are complete, and the vehicle control systems are communicating properly before the car is returned to the customer.
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Adaptive cruise control (ACC) is an available cruise control system for road vehicles that automatically adjusts the vehicle speed to maintain a safe distance from vehicles ahead. As of 2019, it is also called by 20 unique names that describe that basic functionality.
Adaptive headlights are an active safety feature designed to make driving at night or in low-light conditions safer by increasing visibility around curves and over hills. When driving around a bend in the road, standard headlights continue to shine straight ahead, illuminating the side of the road and leaving the road ahead of you in the dark. Adaptive headlights, on the other hand, turn their beams according to your steering input so that the vehicle’s actual path is lit up.
The blind spot monitor is a vehicle-based sensor device that detects other vehicles located to the driver’s side and rear. Warnings can be visual, audible, vibrating, or tactile. However, blind spot monitors are an option that may do more than monitor the sides and rear of the vehicle.
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Intelligent Cruise Control (ICC) measures the distance from the vehicle ahead and controls acceleration and deceleration to automatically maintain a suitable following distance. This distance is adjusted according to the speed of the vehicle ahead, up to the preset speed, and the ICC speed settings set by the driver.
OEM-installed safety systems which are designed to assist the driver in both normal driving modes and pre-collision avoidance. The technologies utilized can be traced back to as early as model year 2002 and have become standardized on most makes and models for model year 2019 and forward. Types of systems can include lane keep assist, blind spot detection, active cruise control, etc. These systems rely on the use of numerous specialized sensors and cameras that often require some form of calibration or programming in order to operate properly after any type of service procedure has been completed. Examples of these sensors include: lidar, radar, sonar, and forward-facing cameras.
The Pre-Collision System uses radar to detect possible crashes, then helps drivers slow down accordingly. Unlike many systems, it can even help prevent high-speed crashes. Toyota says the Pre-Collision System uses radar to detect vehicles. If it detects a pending crash, the system alerts drivers to brake.
The steering angle sensor (SAS) is a critical part of the ESC system that measures the steering wheel position angle and rate of turn. A scan tool can be used to obtain this data in degrees. The SAS is located in a sensor cluster in the steering column. The cluster always has more than one steering position sensor for redundancy and to confirm data. The ESC module must receive two signals to confirm the steering wheel position. These signals are often out of phase with each other.
The acronym SRS stands for Supplemental Restraint System which is the proper name for the Airbag System in your vehicle. This is the dash warning light that was not mentioned in the prior articles on warning lights. This system is considered a passive safety device, meaning that it takes no action from the vehicle occupants to activate the device, like a seat belt that takes action from the occupant to activate the device.
Windscreen calibration is the process of adjusting the parameters of a camera lens to capture a complete image of the vehicle and road, guaranteeing that in-car ADAS systems receive accurate and reliable information.
