Collision Mitigation Braking System (CMBS)

Collision Mitigation Braking System (CMBS) is Honda's proprietary autonomous emergency braking system. It is designed to help prevent collisions by warning drivers of obstacles and applying the brakes when necessary.


CMBS uses a radar sensor in the grille and a front camera behind the rearview mirror to help detect other vehicles and pedestrians on the road ahead. Depending on the situation, CMBS uses visual and audible alerts (beeps) and can automatically apply the brakes to help you avoid a collision.


Vehicle manufacturers recommend that you calibrate the system after replacing your windshield to ensure that all safety features are working. If your windshield is installed incorrectly, even by a few millimeters, these technologies can be compromised! Every car is different, so manufacturers also provide unique calibration parameters for their driver assistance systems.


There are two main types of ADAS sensor calibration procedures:


— Static - parked car/system training

— Dynamic - driving the car/system training


In most cases, both types of calibrations require an advanced aftermarket scan tool at the OEM level or a genuine factory (dealer) scan tool. Some manufacturers require static or dynamic calibration, while others require both. Static calibrations (usually in your bay) require the most equipment, workspace, and time. 


Some vehicles only require dynamic calibration. On the other hand, many require static calibration and include dynamic calibration as the last step in the ADAS calibration process. Dynamic calibration requires driving the vehicle at certain speeds and in certain conditions with the ADAS scanner connected, but it is far from a test drive. While the dynamic calibration process varies by OEM, special parameters are required. Examples include driving on clearly marked roads, following one or more vehicles, avoiding curved roads, and driving at a specific speed.