HI!
When I turn off my 2017 Mercedes E300 (W213) I can hear a humming noise- right rear back; like a small motor running for about five minutes, I never hear it again until I turn off the car after driving.
No problems with the car, no OBD codes!
Is this normal? Thanks in advance!
When I turn off my 2017 Mercedes E300 (W213) I can hear a humming noise- right rear back; like a small motor running for about five minutes, I never hear it again until I turn off the car after driving.
No problems with the car, no OBD codes!
Is this normal? Thanks in advance!

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When I turn off my 2017 Mercedes E300 (W213) I can hear a humming noise- right rear back; like a small motor running for about five minutes, I never hear it again until I turn off the car after driving.
No problems with the car, no OBD codes!
Is this normal? Thanks in advance!
Might need a video to determine what sound you are hearing. Originally Posted by Massimo Here
HI!When I turn off my 2017 Mercedes E300 (W213) I can hear a humming noise- right rear back; like a small motor running for about five minutes, I never hear it again until I turn off the car after driving.
No problems with the car, no OBD codes!
Is this normal? Thanks in advance!
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Does the vehicle have air suspension?Originally Posted by Massimo Here
im sure it wont pick it up, it is a very low sound.
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I thought it could be the backup camera but you said it lasts for 5 minutes, that is a significant amount of time, really need a sound clip to hopefully know what sound it is. It wouldn't be the parking brake too because that only lasts seconds.
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I read its the fuel pump releasing extra air from it and its normal.Originally Posted by W205C43PFL
I thought it could be the backup camera but you said it lasts for 5 minutes, that is a significant amount of time, really need a sound clip to hopefully know what sound it is. It wouldn't be the parking brake too because that only lasts seconds.
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Where did you read that, I never heard such a thing on any MBs before, maybe I am not paying close enough attention? Originally Posted by Massimo Here
I read its the fuel pump releasing extra air from it and its normal.
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Mine does the same thing it’s the pump for the massage and dynamic seat. It’s in the area where the spare tire would normally sit.
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Originally Posted by 07ETreeFiddy
Mine does the same thing it’s the pump for the massage and dynamic seat. It’s in the area where the spare tire would normally sit.
I don't have the massage feature!