Front Air Bag Sensor Control problems of the 2013 BMW 528

While driving regularly the steering wheel makes a clicking noise and the airbag sensor is on. Vehicle was sent to the luxury motorsport dealership where the vehicle was purchased. Their phone number is 1-855-288-5488. And after they plugged in the computer to check up, the diagnostic comes out as airbag, wabco 441 120 008 0 / 4411200080 steering angle sensor damaged.

My care has 30000 miles; warranty expired in Nov 2016. I have never been in an accident and have maintained the car very well. I got a warning sign that read 'passenger restraint system malfunction'. I took it to the dealer and he said the szl (steering angle sensor) and the passenger seat mat have to be replaced. In reading several threads I think this is a common complaint that is not addressed by BMW. I am unclear as to why a restraint system issue doesn't fall under safety which would allow for coverage under extended warranty.