2010 E550 Coupe: Loud fan noise...possible issue??
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E550
2010 E550 Coupe: Loud fan noise...possible issue??
Hey guys,
Last night I noticed that my 2010 E550 coupe abruptly began making a loud fan noise after start-up in the late evening. It sounds as if the fan was attempting to cool the engine (..1st time starting the engine for the day). I drove the car for about 20 mins to grab a bite and noticed that the fan stayed on the duration of the trip and after I shut off the vehicle. Has anyone experienced any issues like this before? The sound is comparable to a loud vacuum cleaner...as odd as it sounds..
Thanks,
JT
Last night I noticed that my 2010 E550 coupe abruptly began making a loud fan noise after start-up in the late evening. It sounds as if the fan was attempting to cool the engine (..1st time starting the engine for the day). I drove the car for about 20 mins to grab a bite and noticed that the fan stayed on the duration of the trip and after I shut off the vehicle. Has anyone experienced any issues like this before? The sound is comparable to a loud vacuum cleaner...as odd as it sounds..
Thanks,
JT
Thread Starter
Junior Member
Joined: Oct 2010
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E550
My exact thoughts on the sound. Our buddy who works in the MB service dept. said that his CLS550 made a similar sound yesterday. Possibly due to the sweltering temps we are experiencing in Houston lately. My coupe was left baking in the garage for the sunday bake fest until the initial evening start-up. If the sound continues, I may possibly bring it in for service and have him take a look at it. Thanks for the info, good to know im not going to crazy listening to Zeus blowing air on the engine. 
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Joined: Jan 2011
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bmw 550i
same here....doesn't matter if it's hot or cold. usually on starting up after the cars been sitting for a couple hours. doesn't happen on initial start up in the morning, but intermittently during the day if the cars sits.
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Eclass Cabriolet A207
i was having this issue with my mercedes on cold morning starts on my e cab and the dealer stated that a separate motor starts up that cools the temperature of the engine so it starts up at the correct temperature.
its a safety feature and is not an issue.
i hope this helps.
its a safety feature and is not an issue.
i hope this helps.
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2010 Mercedes Benz E550 Coupe
2010 E550 Coupe: Loud fan noise...possible issue??
Code P2237 (Attached) is one of the codes that can pop up for it.
It's possible that the Coolant Temperature Sensor OR its related Sending Unit is malfunctioning. If the cars computer isn't getting a correct, or any signal at all, regarding the temperature of the engine coolant, the computer goes into a failsafe setting to ensure that the engine doesn't seriously overheat and get damaged/destroyed.
It's possible that the Coolant Temperature Sensor OR its related Sending Unit is malfunctioning. If the cars computer isn't getting a correct, or any signal at all, regarding the temperature of the engine coolant, the computer goes into a failsafe setting to ensure that the engine doesn't seriously overheat and get damaged/destroyed.
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2011 E550 Coupe
It may be the secondary air injection pump on the front of the engine. This thing is loud and sounds like a turbine. It usually starts with the engine and runs a little bit and quits. It is a part of the emissions system.
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2010 e550 coupe
Did anyone figure this out. I am now having a loud fan noise and constant running. It is however extremely hot right now with temps of 105 at times and 80's at night so is it related to ambient temps? My ac also just recently stopped blowing cold air and I heard that if the fan malfunctions that it will cut the compressor off as a safety precaution.
