Gday Guys new to the forum but hopeing someone can help me i have a 2005 s130 with a faulty BICS panel. To access the fault codes you press the light button for 2 seconds but for some reason my light button does not work. i cant even turn the lights on so therefore i cant get any fault codes, as the button is electronic its hard to tell if it is working or not. Is there anything electronic that may be causing this fault. or is it a matter of replaceing the entire control panel. Cheers Wayne