240 temp, help

Oct 4, 2024 | 05:32 PM

Blxckc63s

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C63s

240 temp, help

Fan kicked on around 210 degrees… only had temps that high when I had a hole in the aux radiator. Check all rads and no leaks. Any suggestions on what I should do?

Temp at 240

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Oct 4, 2024 | 09:17 PM

Baltistyle

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'13 s212 63 p30. '06 LX470

Do these have an a aux cooling pump? I’d check that or thermostat. Any way for you to get a scanner to check, activate? How many miles on the car?

Oct 5, 2024 | 07:07 AM

Jimmy_c63s

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From: Australia

⏱️ 700HP Facelift converted C63 S Coupe with Drexler 3.06 plated LSD

Quote:

Originally Posted by Blxckc63s

Fan kicked on around 210 degrees… only had temps that high when I had a hole in the aux radiator. Check all rads and no leaks. Any suggestions on what I should do?

Temp at 240

Check the front aux coolers again for damage and leaks. Also check your coolant levels in both reservoirs. If they're very low then it's sure to be a leak if the coolers.

Can you smell coolant from the front bumper after driving with aircon on?

Last edited by Jimmy_c63s; Oct 5, 2024 at 07:09 AM.

Oct 5, 2024 | 11:39 AM

Blxckc63s

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C63s

Quote:

Originally Posted by Baltistyle

Do these have an a aux cooling pump? I’d check that or thermostat. Any way for you to get a scanner to check, activate? How many miles on the car?

nothing on the scanner, I changed pump on the driver side along with the rad about a year ago. 70k miles

Oct 5, 2024 | 11:42 AM

Blxckc63s

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C63s

Quote:

Originally Posted by Jimmy_c63s

I checked and checked and checked… no leaks from the coolers. Gonna fill up reservoirs again to see if I can find a trace of a leak. I don’t smell any coolant, aircon still blows cool air.

Oct 5, 2024 | 12:09 PM

W205C43PFL

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Quote:

Originally Posted by Blxckc63s

Fan kicked on around 210 degrees… only had temps that high when I had a hole in the aux radiator. Check all rads and no leaks. Any suggestions on what I should do?
https://cimg2.ibsrv.net/gimg/www.mbw...21e585e6c.jpeg
Temp at 240

Could it be a bad sensor, do you want to try scanning if there are codes present?

Oct 5, 2024 | 01:07 PM

Blxckc63s

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C63s

Quote:

Originally Posted by W205C43PFL

Could it be a bad sensor, do you want to try scanning if there are codes present?

No codes present

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Oct 5, 2024 | 05:40 PM

SJGetsome

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From: Miami, Florida

W205 C63 AMG Coupe

That's the transmission temperature, so you might have an issue with the oil circuit for the transmission fluid. Check for leaks in that circuit as that caused my transmission temp to get high once before a few years back and a leak was found. Back to normal after getting that fixed.