I've searched and tried all of the suggested methods to reset my 2005 E320CDI
service "D required" indicator. Could someone do a step by step for me for the 2005 model? It all seems very confusing. The mechanical part was easy compared to understanding how to do the reset.

Should be in your owner manual under FSS probably.

Make certain the front door is closed before you try.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

My 05 manual says that Mercedes has to re-set the maintenance service indicator. I'm trying to find out how to do it myself.

key on position 2, scoll to mileage screen, push and hold reset button till service menu comes up, scroll through menu to confirm and confirm maintenance.

this only works up to 2005.

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

Thanks. It cleared.