C63 AMG (W204) 2008 - 2015
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W204 Coolant Mystery

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Old Nov 21, 2023 | 09:46 PM
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JoeyIppolito's Avatar
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2009 C63 AMG / 1925 Ford Model T
W204 Coolant Mystery

Run down is, at operating temps I get a check coolant message. After cooling down coolant level looks fine.
I worried myself as the headbolt issues with these cars. Took it to Benzworks in Huntington Beach, topped off what was low and did oil change and all looked fine.
still getting message.


After turning car off, bout an hour after wheee it sits

Operating temp where it sits
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Old Nov 21, 2023 | 10:13 PM
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ML 63 AMG
Maybe throw a cooling system pressure test on it. Will help you get an idea of what’s going on.
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Old Nov 22, 2023 | 03:52 AM
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2009 C63 AMG / 1925 Ford Model T
Originally Posted by Joshinator99
Maybe throw a cooling system pressure test on it. Will help you get an idea of what’s going on.

Yeah it’s going back in. Drove tonight and after cooling down didn’t seem my level rose. No smoke, oil looks good, and no visible leaks. I’m stumped but I’ll let someone get deeper into it
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