While driving on the highway, Lane Keeping Assistance activated as my wife made room for a vehicle on the side of the highway. Ultimately, she ended up swerving into the middle lane and continued to feel as if she was fighting the car, swerving side to side, ultimately making contact with a car in the left lane. The vehicle is currently at a collision service center awaiting repair. Ultimately this feature seems to have contributed to, or frankly caused an accident with another driver. The system was ping-ponging the vehicle side to side attempting to find a lane. Two vehicles were involved in the accident. The actions of the lane keep assist were described to the police officer on scene, and also to our insurance company. The problem has not been reproduced, as the car is in a shop awaiting repair. The vehicle was inspected by an insurance representative for damage, however their assessment did not include the lane keeping assistance. We had noticed prior to the accident, a few times, that the lane keep assist seemed fairly aggressive. At times when it kicked in, it was a rather big surprise. The system is not exactly subtle. A system like this, that has the potential to surprise a driver to the point of losing control, or one that seems to wrestle for control, should not be on the road.

All of the sounds in the vehicle just stops. This has happened twice while driving the vehicle. No saftey warning sounds, no idiot light sounds, no turn signal sound and no radio. The vehicle still runs; however all the the safely ADAS systems remain silent. There are no warning sounds for any of Volvo's advanced safety systems. This is a series safety issue since there are no sounds; someone would have to constantly watch the dashboard instead of watching the road while one is driving.