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Mercedes-Benz C220 CDi (W204) - Air Cleaner Filter Replacement - lilley

I have removed seven T25 screws (2 at rear, 3 across the middle, 2 at front) still the cover does not want to be removed. Are there more fastenings to undo/remove or it just sticking please?

Mercedes-Benz C220 CDi (W204) - Air Cleaner Filter Replacement - elekie&a/c doctor
I think you will find the complete plastic air intake housing pushes down onto rubber bushes.Removal requires a sharp tug.
Mercedes-Benz C220 CDi (W204) - Air Cleaner Filter Replacement - injection doc

& when you replace the air filter you should use a diagnostic tool to reset the AFM adaptions.

Suprising how many dont and it will effect the way it runs

Mercedes-Benz C220 CDi (W204) - Air Cleaner Filter Replacement - lilley

Thank you for the advise, looks like a good job to leave to the dealer!