why tranny quit working after filter change and new fluid
What is your question?
How come my tranny doesn't go into any gear and it did before I changed the filter and fluid it's a 2001 C320 when I drained it it was real dirty and it was shifting funny so I changed it and now it won't do anything when I dropped the pan I got 2 1/2 quarts of fluid out of it does that sound about right
How long has your 2001 Mercedes-Benz C320 had this problem?
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It going to be difficult for anyone to help here 'online' .. *Hands-on* inspection / evaluation will be required.
(Parts installed incorrectly - insufficient transmission fluid level)