Transfer Case problems of the 2008 BMW X3

Transfer case need to be repaired various times. The plastic piece inside the case keep going bad causing me to pay thousands of dollars to replace the transfer case motor and labor cost to do so. Without a proper transfer case you can not switch gears properly which almost caused an accident when trying to merge on the highway with my child in a rear car seat.

While driving, the 4x4 and break lights come on the dashboard, after a few miles of driving the power train can be felt to be failing/slipping, it is more noticeable when making a turn, according to the BMW dealership, the transfer case needs to be replaced, after some research, this seems to be a common failure with BMW cars.