Where is the video of it being put in?Well, on my way to a Dr. appointment 3 weeks ago the center dash where the spedo shows, "Engine overheating, pull over and turn off engine immediately." You guessed it, Water pump. I knew there was a very small leak somewhere, but could never find it. I assumed it was some porous casting somewhere and my dealer is 50 miles away. The car had 37,800 miles on it. 3 months out of warranty. Well, being fairly experienced at repairs I tackled the job. I am sure that Mercedes wouldn't totally approve,l but it is back together and working well for the last two weeks. The job is horrific! At times I even thought of pulling the engine ( I have an engine lift). I'm not sure a private shop would tackle the job and if I was one I would turn it down. The underside of the pump has a valve, actuated by vacuum, where there was a leak around the piston that finally froze it in the closed position resulting in instant engine overheating. You can see that it is a common failure point by searching the net. There is also a video of a mechanic putting one in. I avoided some disassembly with a work-around or two.
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