E-Class (W212) 2010 - 2016: E 350, E 550

V8 Biturbo coolant leak

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Old 11-22-2020, 05:28 PM
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2012 E550 sedan 2019 E63 Wagon
V8 Biturbo coolant leak

So it seems the 550 is leaking some coolant, and it may be from the main radiator.

It's small, but is starting to smell.

I took out the bottom cover and found the approximate location. Then I looked up, and saw that it where is dripping from.

Then I looked at the radiator area, and noticed it was wet. put a sample on clear glass, and saw it was blue. Weird thing is that coolant turns white after it dries. The one on the bottom cover is kind of sticky feeling, the one on the glass sample is watery feeling, like from the windshield fluid.






Anyone knows where those 2 hoses go to?
Old 11-22-2020, 06:20 PM
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2014 E550-sold 😩
Transmission right?
Old 11-22-2020, 08:58 PM
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Looks like it, but I can't find any parts break down. And I am also wondering if the leaks are from different areas. One looks like trans fluid, the bottom one looks like coolant.
Old 12-03-2020, 09:17 PM
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So looks like a radiator crack, being quoted $2k to replace.

Last edited by S. Madman; 12-03-2020 at 09:23 PM.

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