Hey, I am new to mb, n i need help with my e320. I love this car but asr light is on. Ive read about changing the brake light switch. But my question is, are my tires causing this problem? I have 225/45/17. Please Ne help would be great. Oh and i need interior parts as well. Thank u. Srry if I am doing something wrong, iam using my cell phone right now.