My vehicle is activating crosswind assist and applying the brakes automatically, unilaterally, and abruptly while traveling at speeds over 40 mph on the highway, even when conditions are NOT windy. It seems that the sensor is overactive in detecting wind. I have taken it to the Mercedes dealer and they have stated they found no problems with the ESP sensors and state that the vehicle is responding to perceived wind conditions/instability normally and as it should. However, this was NOT like this for the first two years I drove the vehicle. It is DANGEROUS and not normal and the unilateral application of the brakes while Im going 60 or 70 miles an hour on the highway forces my vehicle out of the lane and into parallel traffic lanes! The unilateral braking is sometimes so severe that my vehicle fishtails and feels like it is going to roll over into an adjacent lane or off the highway. This is going to cause a major accident to me and fellow drivers. Since the problem started six months ago and has steadily worsened, I have been advised to upgrade the suspension and install an swaybar and also to change the tires to make the vehicle more stable. I have done both. Neither has helped at all. I dont know what to do or where to take it. It seems like deactivating the crosswind assist would be helpful in determining if the sensors are too sensitive or defective and whether it drives safely without them. But there is no way to deactivate that system. I have owned my vehicle for three years and for the first 2 1/2 years it drove perfectly, without this issue ever happening. My vehicle has not been in any collision and has had no damage, so I do not know where this came from. It seems like an electrical or sensor issue that has arised and neither a sprinter specialist mechanic nor the Mercedes-Benz dealership with a sprinter technician have been able to figure out what is wrong and how to fix it. This is URGENT and I need help or there will be a catastrophe.