I hate to bump an old thread, but I feel the need to vent. My car just spent the last week at the dealership because of this issue and because my driver-seat bottom heater had failed. I got it back yesterday, and the service invoice shows that the driver-seat bottom heater was replaced but that they could not replicate the supercharger issue. I was furious! I had already explained to them last week that it was most likely the intercooler pump, since it has failed on almost every SLK32 to date, and that the supercharger overheats and disengages until it cools down again. Then I noticed they only put three miles on the car. The engine isn't even up to full operating temperature in three miles! There is no way they could have tested my problem.

So now I am between two choices. I can either bring the car back to the dealership and try to get a tech to ride with me until it the issue occurs again, risk having it sit at the dealership for another week, and then hopefully have it fixed under warranty. Or, I can order the $244 intercooler pump from Mercedes and replace it myself in my garage in 2 hours. This is my only mode of transportation, and I cannot have it sitting in a lot for another week or longer while I wait for the techs to have a brain movement.

What do you guys think?