C300 Overheating (Only) when Idling?
#1
Junior Member
Thread Starter
C300 Overheating (Only) when Idling?
I have a 2013 C300 Sport with roughly 45k miles. I noticed a few months ago that the fan was kicking into a much higher speed than ever before when I would idle for more than 30-60 seconds. Recently I have noticed my temperature gauge start to climb if I idle for long enough. At least 3 times it reached the red zone and I had to immediately turn on the heat and/or shut it off. It has NEVER overheated when moving, and once if it is overheating when idling, moving always instantly drops the temperature. Normally I;d say the fan wasn't kicking on, but its obvious it is. This has gotten to the point that I can't even go through there car wash anymore because it will overheat before I get out.
I'm thinking it's a thermostat, but I want to get some opinions before I "try it" considering it's $175.
Other notes: No recent work has been done to the coolant system so I can't imagine it's are in the system. Coolant levels are reading normal.
I'm thinking it's a thermostat, but I want to get some opinions before I "try it" considering it's $175.
Other notes: No recent work has been done to the coolant system so I can't imagine it's are in the system. Coolant levels are reading normal.
#3
Junior Member
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#4
Junior Member
Not seeing $60 either, but - that site/dealer seems to have decent pricing relative to others.
Last edited by Imrandyru; 09-16-2018 at 11:50 AM.
#5
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2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
I'll have to check where I got it from, I thought it was FCP. I did not buy OEM, but I did buy the brand that makes OEM (like Bosch) I'm pretty sure. I'll see if I can find it later.
#7
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#8
Super Member
Sounds more like a fan problem.....only speed you see is "A/C On" range ?..letting car idle you see a temp increase and Max speed Fan will eventually kick in ?