A buddy of mine had an accident, ran a stop sign and t-boned another vehicle. Nobody hurt, airbags did not deploy. His vehicle has a pre-collision avoidance system that applies the brakes if it senses an impending rear end impact. In this case, the other vehicle came from the side, not something it was designed to handle. He's wondering, and I am too, how to read the EDR in his vehicle to see if that pre-collision system really did activate before the impact. I don't think the normal scan tools can read this, but do dealers have the ability or is there some other equipment necessary?