I have a sony 10 pack from my old car which I was planning to put in my 230. From what I'm understanding is that no changer will work with benz's deck, is that true or is it just with the steering wheel controls. If so what is the make of the one that will work I live in Canada so ordering is a pain so I want to buy it here. Also if the sony changer will work does anybody know if it will fit in the glove compartment. Thx.