Every morning when starting my 2009 E320 Bluetec, I get a message: "Your C Service is ..... XXX days". How to know what kind of service is expired xxx days?
Is that related with some service like; oil change, transmission fluid, filters, or only a visual checking?
Are there some service/maintenance menu possible to be accessed to know what service is that?
Thanks.

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Nyck - TX - USA

The service history booklet might have such information if it is still with the car.

Thanks, I believe my car still have this book.

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Nyck - TX - USA

Mercedes-Benz Flexible Service C includes an oil change, replacing wiper blades, checking fluids and running a computer diagnostic to check for any other needed maintenance. Mercedes-Benz recommends Service C every three years or 36,000 miles.

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1999 Mercedes E300TD daily driver sold at 238K miles 106K miles were mine, rust worm got it :-(
2006 Mercedes CDI new daily driver! 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. March 2024 135,250