Hi. Does anyone have any experience in the fitting of a Parrot hands free kit? The wife recently had one fitted by Halfords, on her BMW 530D, sorry it's not a Mercedes, but the Parrot is live all the time even when the ignition s off, so the car is now starting to display an error saying excessive battery drain. Today Halfords say that it is not possible to have it turning off with the ignition on Mercedes and Bmw's. Are they just spinning me a tale because they haven't done it properly or does anyone know if this is true. I have one fitted to my Navara which turns off when I turn the truck off. Would appreciate any info so I can go back to Halfords with the truth. Thanks in advance.