Hindsight really is 20/20 when you add BMW's Extra Sensory Parking technology to your vehicle. Begin backing up, and a warning tone alerts you to obstacles within approximately three feet of your car's rear end. The closer you get to the object, the quicker the beep gets. Especially helpful for parallel parking.
For 3 Series Sedans produced from 9/01-on. Additional parts may be required.Check with your local BMW Center for more information.