When i got in my car yesterday after work the fan was running until i turned the engine on. I had to remove the fuse from the fan or my battery will die, i took it into mylocal garage this morning thinking it may be the thermostat but he said no. Its just come back and he said he aint got a clue and suggested i take it into mercedes OUCH. Its a c200 elegance on a 1998 ( s plate ). Has anyone got any ideas what this is, as im the clueless guy when it comes to mechanics and dont want to get stung with some waffle of a garage.