I notice only one port for adding oil located at firewall
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2011 Mercedes-Benz E550 4MATIC Question: where do you check to see if engine needs oil.
Answer #1pushrod November 27, 2013, 15:43Master
If you have the owners manual it will show/tell you how to check the oil.
Answer #2ziptie12 November 28, 2013, 10:31Master
Possibly through the information display menu.Electronic level sensor , likely , not dipstick. A dipstick would be to low-tech and easy!