XSeries-forum

I am after a aftermarket hands free kit, which will work with my oem sat nav screen and be able to use the steering wheel buttons. Which is the best one to get?

I suspect the answer to that is none.  The Parrot systems are good, but no one offers integrated systems.  The E53 only had Bluetooth as an option, or an integrated Siemens/Motorola option.  As the car has been out of production for nearly 10 years, I don't remember seeing a recent product.