I have a 335i car with Bluetooth capability. My Xperia works with a Motorola H680 just fine but will not pair with my netbook or my car. I try and search for devices (my xperia is on and visible), but it is not getting picked up. Is there is something I have to change on my Xperia settings?
i think the setup is different than your other phone. i still cannot figure out how to do it in my car either but my car works with my iphone and all my other se phones no problem. it isnt the x1 bluetooth though because my x1 pairs with my jawbone. it is something with windows mobile so you can google "winmo bluetooth bmw 335" will get you better results.