2009 C300 4MATIC
The fan quit on me while at the outskirts of Philadelphia, stuck on rush hour traffic at almost 40 outside... The dealer on Queensway quoted me around 1k with 3 hours of labour and a new radiator fan assembly (in the WIS you're suppose to take a whole bunch of parts appart but after seeing it, it looks straight forward to take it out: unplug, unlock the clamp, turn it clockwise and pull it upwards). Thank god for the good cooling system on the B, keeping an eye on the gauge and turning the heat on will do the trick until I get this fixed, one way or another. I'm gonna check it out today as even for slight corrosion on the connectors the WIS says to replace the whole unit....