As I was pulling into my assigned parking spot in my building complex. Both me and my 6yr old daughter were in the vehicle. As I was pulling into my parking spot and went to brake and put my vehicle in park- my brakes locked, gave out and the vehicle continued to proceed forward. As it proceeded forwarded, I immediately kept trying to brake- but because the vehicle is all wheel drive it accelerated forward pushing through the concrete parking bumper guard located on the floor of the parking spot. Because of the acceleration, the vehicle crashed into the storage units connected to the building structure. I immediately tried reversing and forced the car into park without braking. Thankfully my daughter was still in her car seat. It was terrifying and we were in so much panic and scared. My neighbors came to our rescue- because I was distraught knowing that we had literally just come off of the highway and that could have happened at any point with my child in the car. My insurance is able to cover the damages - but, the auto repairs do not consist of checking the brakes/malfunction. I cannot see myself staying with this vehicle and putting the safety of myself and daughter in jeopardy. I am praying that BMW takes the necessary measures to assist in addressing this