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Mercedes C300 cooling fan
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Hogandoc
New User
Jan 14, 2023, 3:07 PM
Post #1 of 8
(657 views)
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Mercedes C300 cooling fan
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I have a 2007 Mercedes C300. Turn car off in garage. (No remote start). Hours later, a cooling fan cycles on, dim running lights come on, no key in ignition. Drains the battery, but I can jump start it. Dealer has looked at it twice, charges battery, says it is fine, and it works a few months, then problem repeats.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 14, 2023, 3:22 PM
Post #2 of 8
(649 views)
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Re: Mercedes C300 cooling fan
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I don't see a C300 available. Is this a Euro car or something.
I can't look at a wiring diagram if it's not a US car.
I checked the C350 and there is a control module built into the fan and that has to be the problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Jan 14, 2023, 3:25 PM)
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Hogandoc
New User
Jan 14, 2023, 3:30 PM
Post #3 of 8
(644 views)
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Re: Mercedes C300 cooling fan
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Might have the year wrong, wife’s car. Definitely a C300, maybe an ‘09? If I put the key in when it happens, no strt and fan keeps running. Stays on about 15 minutes.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 14, 2023, 3:31 PM
Post #4 of 8
(644 views)
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Re: Mercedes C300 cooling fan
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I/we can't compete with in person work and observations in front of us.
These cars are a PITA IMO don't work on them + never did they suk.
That's opinion and experience over 50 years of it.
OK let's try. It's interment so impossible already to ever be sure.
I care, want to help but hate these cars are revenge from losing WWII owning one is not my thing.
Welcome here still but these are Hitler's last revenge so screw folks who buy them!
Tom Greenleaf
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Hogandoc
New User
Jan 14, 2023, 3:35 PM
Post #5 of 8
(642 views)
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Re: Mercedes C300 cooling fan
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Tell me about it. Each repair seems to cost $1000.
One time it broke, it was either a tow, or check on my Dad, who had a fatal heart attack and didn’t make it.
Car seems to be cursed.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 14, 2023, 3:42 PM
Post #6 of 8
(634 views)
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Re: Mercedes C300 cooling fan
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Yeah, found it under 2009.
Same system though. The fan module is about the only thing that has the ability to do that.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 14, 2023, 3:46 PM
Post #7 of 8
(632 views)
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Re: Mercedes C300 cooling fan
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Sorry - am not here to harm you and or am sorry for your loss.
Life is hard or has been on me sympathy with you, for that aspect,
Tom Greenleaf
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Hogandoc
New User
Jan 15, 2023, 9:55 PM
Post #8 of 8
(571 views)
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Re: Mercedes C300 cooling fan
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All good. I’ll jump it, take it to the dealer & have them replace the fan module & charge it up.
I swear this car is jinxed! Since my last post, house caught on fire! We’re fine, as well as cat & dog. Minor damage, but lost our internet.
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