Brake Light On problems of the 2000 BMW 323

After having the control arm bushings replaced and a 4 wheel alignment completed at a BMW service dealership in tyler, TX, apparently the steering angle sensor (located at the bottom of the steering column) failed which caused the dynamic stability control (dsc), brake and abs lights to illuminate. When the incident occurred, I was driving 70 mph on a dry highway using the cruise control. When this sensor failed, all three lights illuminated and the cruise control ceased to work. According to the BMW service department, there is no requirement to re-calibrate the steering angle sensor after an alignment is completed. Additionally, per the service manager at the BMW service department, they are replacing steering angle sensors in a variety of BMW automobiles at "3 to 4 per week". Estimated cost to repair is between $500 - $1000.