It could mean a number of things, and you have to press the check button to figure out exactly what is going on. It will turn on if you are low on windshield washer fluid, coolant, brake fluid, brake pads, light bulbs out, etc... Basically, something isn't right, but you won't know what until you press the button to find out.
Don't buy the car until you know what problem areas to look for and it has been inspected by a knowledgeable mechanic. Nothing is more expensive than a cheap & poorly maintained BMW. Do NOT go into owning a BMW blind.
Last edited by ZeGerman; 11-14-2012 at 11:53 AM.