yea its not an uncommon error... and any mercedes tech that has worked on c32s and slk32s would know that they come with a faulty intercooler pump... no idea why they replaced the supercharger as it has nothing to do with it... tell them about it or read a little from the mercedes forum... after you get this small thing fix you will love vehicle as I do not know of anyone that has bought this car and did not like it…