What are the most common causes of this warning? You might be surprised how often the fix is simple. The number one cause is dirty sensors or cameras. A layer of mud, snow, ice, or even thick dust on your front grille (radar sensor), windshield (forward camera near the rearview mirror), or rear bumper (parking sensors) can confuse the system. Number two is poor weather – heavy rain, fog, or direct low sun can temporarily blind cameras. Number three is misalignment – if you had front-end body work or even a minor fender bender, a sensor might be pointing slightly off. Number four is a low or weak 12-volt battery – driver assist systems are sensitive to voltage fluctuations. Less common but possible are faulty sensors, damaged wiring, or a software issue that needs a dealer update. https://www.kaiyiglobal.com/blog/what-does-service-driver-assist-system-mean