CLA 45s strange humming sound cold engine
#1
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Join Date: May 2022
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CLA 45s 2022
CLA 45s strange humming sound cold engine
Hi guys. I have a brand new CLA 45s and it makes this noise when I open my drivers door (only happens when first time driving for the day cold start)
here’s a link: https://youtu.be/ZM8HkXGZxmw
also, on the cold starts the rpm sits at the 1500 obviously. But sometimes the car fluctuates it’s rpms like 1500 to 1550/1600 up and down. Is this normal? Mercedes me technician says it’s okay. Seems to happen only on colder days.
thank you for your help
here’s a link: https://youtu.be/ZM8HkXGZxmw
also, on the cold starts the rpm sits at the 1500 obviously. But sometimes the car fluctuates it’s rpms like 1500 to 1550/1600 up and down. Is this normal? Mercedes me technician says it’s okay. Seems to happen only on colder days.
thank you for your help
#2
MBWorld Fanatic!
Hi guys. I have a brand new CLA 45s and it makes this noise when I open my drivers door (only happens when first time driving for the day cold start)
here’s a link: https://youtu.be/ZM8HkXGZxmw
here’s a link: https://youtu.be/ZM8HkXGZxmw
I haven't found anything to confirm the noise is abnormal though.