Devoir

My wife drives a 2013 E350 and it just hit 60K miles. Looking at the coolant the color was not a bluish color instead it was brownish. I decided this weekend to change the fluid, so I did a little research and want to post a few pictures and attempt for a guide.



2013 E350 -class W212 / S212

E350 Sport 4dr Sedan (3.5L 6cyl 7A)

V6-GASOLINE ENGINE M276
Engine no.: 276952 30 206433
Engine Class 276

Transmission: 722906 04 207430 [transmission Type = GA]
Transmission class 722.9





Coolant Spec MB 325 or MB 326

http://www.mercedes-benz.com.au/cont...ntifreeze.html


From the Manual 2013 E350 manual Page 367








At 60,000 miles I noticed the fluid in the overflow tanks was a brownish color not the bluish. I decided to replace the fluid.






Jack up the car and make sure it is safe to work under. I use jack and Jack stands to ensure the car is steady and safe… Please follow all safety requirements to work under any vehicle….. Know what your doing or take it to a dealer…

Remove the undercarriage covers I used 8 mm socket to remove all of the screws..





Once the cover is removed, Look from the driver's side towards the radiator. My car had this yellow stripe painted on the valve. Note it is the circular device in the picture. The valve is "locked " in place with a snap of some type. I took a pair of pliers and rotated the handle 90 degrees.









I forgot to take a picture of the valve rotated 90 degrees. However you will gently pull the circular valve handle towards you or the driver's side… I didn't pull it out more than 1/4" so if you pull it more it will likely come all the way out and you will not be able to control the flow of the draining fluid.




Note I did rotate the valve handle an additional 90 degrees …. It seemed like the fluid flowed a little faster.




Note the valve handle is pulled out approx 1/4" and the fluid is flowing out or down like the green arrow indicates.






Please note to get the valve to close turn the handle 90 degrees like the red arrow and push the valve handle back in and rotate it closed ….. You will feel a click when it snaps shut or closed.. Approx 5 quarts was gathered from this task





At this point I only had approx 5 of the 10.1 quarts drained from the system. So I noticed the lower radiator hose kept fluid from draining from the engine thru the radiator….. So I removed the hose





It’s pretty simple to remove the Clip and drop the hose…… Make sure you have a catch pan ready to gather any fluid that will escape when the hose is removed…. Approx 2 quarts was gathered from this task.




In total I was able to drain 7 quarts from the 10.1 quart capacity or 9.6 liters









I purchased original Mercedes Corrosion Inhibitor / antifreeze part # BQ 1 03 0004 and mixed 50/50 % with filtered water.





Borrowed the girls measuring cup. Since everything in the US is packaged in Quarts, I mixed 1:1 ratio of Antifreeze to water.








When mixed 50/50 is has a nice bluish Color vs the original which was discolored








Refilled thru tank replaced 7 quarts






I wasn't sure about how to purge air from engine.
Cranked and ran car a few minutes at a time to ensure the heads or engine didn't overheat ….



Perhaps Konigstiger can post the WIS for this work scope


I have posted this as a guide not any official process so use accordingly... My goal is to assist others whom enjoy working on cars.....

Devoir

Tump43

Thanks for the excellent DIY. To purge air bubbles from the coolant after a change, , just let the engine idle for about 2-5 minutes with the overflow tank cap off and all the bubbles will percolate out. That simple.

Devoir

I can't seem to make my pictures show up larger.... can someone share how you post larger versions of jpg's?

belarus27

photobucket or upload original size pics

MBNUT1

Nice write-up. I assume that you meant distilled rather than filtered water? Or does your filtration system take out all of the minerals?