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.

 

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

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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.

 

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.

 

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

 

I finally find one. Are there one screw/plug or two?

 

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.

 

https://mbworld.org/forums/e-class-w...nge-guide.html