Why is my mercedes making a humming noise?
Hi There, This may be caused by a couple of different things such as a water pump that may be starting to fail or possibly an alternator that is beginning to go bad. Either of these will produce a bit of a humming or whining noise that will change as the engine RPM increases or decreases.
Why does my car make a buzz sound?
A low-pitched humming from under your car Note when the noise happens so you can better help your mechanic diagnose the problem. If your car makes a humming noise, it could mean the differential needs lubricant, the transmission is failing or the universal joints or wheel bearings are wearing out.
When does a Mercedes Benz make a noise?
The noise is a common problem, with Mercedes Benz E-Class, S-Class, C-Class and ML-Class and it is most noticeable when you first start up the car. Typically the engine is cold. Can often be heard when you are a stop light.
Why does my C-300 sport make a buzzing noise?
I noticed that until several hours after driving my 2009 C-300 Sport (manual with Entertainment package) I can hear a brief buzzing noise, about once every 30 seconds or so, that seems to originate from the engine compartment. Have not been able to pinpoint the source of this noise.
Where does the buzzing noise come from in a car?
Click to expand… Quite difficult to actually pinpoint where the buzzing noise was coming from…MB/tests have confirmed that this noise is normal after driving. Found noise is coming from throttle blade opening and closing to allow for expansion gases to escape intake manifold.
When do you turn the steering wheel do you hear a whining noise?
When you turn the steering wheel on your Mercedes-Benz you may hear a loud squeaking or weird whining noise. The noise is a common problem, with Mercedes Benz E-Class, S-Class, C-Class and ML-Class and it is most noticeable when you first start up the car. Typically the engine is cold. Can often be heard when you are a stop light.
Click to expand… Quite difficult to actually pinpoint where the buzzing noise was coming from…MB/tests have confirmed that this noise is normal after driving. Found noise is coming from throttle blade opening and closing to allow for expansion gases to escape intake manifold.
Why do I hear a noise when I start my Mercedes?
The electric water pump in Mercedes vehicles, as far as I know, is used to pressurize the cooling system from the reservoir bottle used these days. It’s one of the noises you hear when first inserting your key to start. Welcome to the GLA forum Red. That’s one of the best theories or explanations we’ve heard.
I noticed that until several hours after driving my 2009 C-300 Sport (manual with Entertainment package) I can hear a brief buzzing noise, about once every 30 seconds or so, that seems to originate from the engine compartment. Have not been able to pinpoint the source of this noise.
Why does my clk350 make a bad noise?
A low speed (5 ~ 25mph), rhythmic, low frequency frictional “groan” could also come from your tires, are they evenly worn out, some brands and types can have these “bad” noises after a certain mileage even low (~15000 – pirelli scorpio…I had on my XC90).