Hi people, I'm new in this forum and this is my first post. I don't want to ask the same question of others post ,I read some post before make one but don't find the answer. My question is which SAM control the headlight and the taillights, the front SAM or the rear one? My problem is that my front lights are not working neither the rear one, only work the front ones when I hold the wiper/turn switch. Turn signal light is fine. Maybe it can be the headlight switch itself but I don't think so. It's a 2004 s430. Hope you guys can help me with that :thumbsup: