E-Class (W211) 2003-2009

W211 engine block drain plug

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Old Mar 14, 2014 | 03:50 PM
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W211 engine block drain plug

I have a 04 E320 wagon. I try to flush the coolant system, but having problem allocating the engine block drain plug. Is it on the driver side or passenger side (one forum thread said it was on the driver side, but I couldn't find it)? What color is it? A picture will be nice.
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Old Mar 15, 2014 | 11:26 AM
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I think I found it - can someone confirm my finding?

It is located right under oil filter (04 E320 RWD). Can someone confirm it?

To view the photos, right-click the link and then choose "Open link on new tab" or "Open link on new window".




Last edited by mumian; Mar 15, 2014 at 11:52 AM.
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Old Mar 15, 2014 | 11:54 AM
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Engine Block Drain Plug?

Are you serious? There is no engine DRAIN PLUG.

If you are thinking there's a relief valve for the radiator then that's another issue.

I just changed the water pump on my 211 and believe me theres no drain plug. Like on the oil pan.

You pop the bottom hose and drain it into a suitable container. Its messy and not fun but it will come out in a hurry.
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Old Mar 15, 2014 | 12:12 PM
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crankcase drain plug

I might call it wrong. Some places call it "crankcase drain plug". There is a diagram shown here


http://www.benzworld.org/forums/w163...-my-ml320.html


but I am having a hard time to find it.
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Old Mar 15, 2014 | 06:21 PM
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211 diagram (see 71), part #, and workshop manual mention Mercedes Benz Workshop Manuals > E 320 Wagon (211.265) V6-3.2L (112.949) (2003) > Engine, Cooling and Exhaust > Cooling System > Coolant > Component Information > Specifications > Mechanical Specifications
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Old Mar 16, 2014 | 10:17 AM
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I finally find one. Are there one screw/plug or two?
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Old Mar 16, 2014 | 04:00 PM
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84 300d 2009 e320 bluetec (retired)/, now 2012 E350 4-matic blueefficiency automatic
Is #41 the top coolant bleeder?

Rememer to get rid of all the air in the engine block after the refilling.
I got cavitation of some aluminum parts and a burst hose on my other car. Almost every coolant service (even by the dealer) has left air in the system.

Last edited by dave2001auto; Mar 17, 2014 at 12:35 AM.
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Old Mar 16, 2014 | 04:16 PM
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https://mbworld.org/forums/e-class-w...nge-guide.html
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