MTI is correct about the supercharger. It is indeed the achilles heel.

Even though MB does not call for an oil change on the SC, if you will drain the oil and replace it with the correct fluid every hundred thousand miles you can often get much longer service. About a year ago, a good used replacement could be had for $700 or $800. Installation is relatively quick and easy.

As Tom said, most MB rocker switches are very serviceable, and like he said, I am not sure that Bosch makes them.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

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