I just recently bought a 2002 C240 last week. This weekend while I was driving on the road I noticed that my 'CHECK ENGINE' Light turned on. At first I was worried, but the car is running fine and nothing seems to be wrong. I know this light is in regards to emission control. However I am not impressed that this is happening especially when the car has only 400 miles in it. I was wondering if anyone had come across this problem and if so, did you get it fixed. I would like to know what I'm up against. I will be calling my dealer tomorrow so I'll post-up what was discussed.