for pdc or reverse sensor, i'd go with aftermarket unless you absolutely must have everything ori on your car. there are some fancy aftermarket ones with sound, screen and indicative distance from object and the sensor that is picking up the object. and i believe it comes with matching amber lighting. the dog's bollocks and at a fraction of what bmw wants. u should retrofit servotronic steering though. just a couple of hours (probably less) labour at the workshop and parking in tight spots will never be the same