I just bought a 2010 c300 and a red picture with a opened hood comes up. I checked the hood and is properly closed. What does that mean
I believe this is a kreuter 'check engine' light.
perhaps you should enlist the help of a 'code reader' or find the built-in and look at the results. Probably something, like "you left the gas cap off"-
rumpshteak and krueterbutter