The sump plug is located on the base of the engine. You will need to remove the undertray. Caution! Fully support the undertray during removal
Undo the fixings - use a 8mm socket
Carefully remove the undertray
Don't forget to place a suitably sized receiving tray beneath
Using a 13mm spanner or socket, carefully remove the sump plug and fully drain the oil.
When the sump has emptied, wipe clean the sump plug area with a paper towel and fit a new sump plug and washer. Do not over tighten. Replace the undertray
Find a Haynes product for your Mercedes-Benz:
Search by registration mark
Search by make & model