Driving the car at under 20 mph making a left turn into my cul-de-sac which has an upward slope. Car system thought it would crash into the tree straight ahead and started emergency braking making loud noise and then the steering wheels locked. Ended up hitting the parked car in front of neighbors house due to brake and steering malfunction. Heard from other Volvo owners that this has been a problem. Even backing out of garage where there is no object behind the car the car emergency braking system engages causing whiplash. No longer feel safe driving this car.