Flex service also goes by TIME so a car that is almost 1 year old needs service also. Check the owners manual & see that time (1 year) is part normal servicing.

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MERCEDES BENZ MASTER GUILD TECHNICIAN (6 TIMES)
ASE MASTER TECHNICIAN
27 YEARS DEALER M.B. Shopforeman
190E 2.3 16V ITS SCCA racecar