Slight 'humming' when car is off and parked?
Thread Starter
Super Member
Joined: Sep 2010
Posts: 672
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E350
Slight 'humming' when car is off and parked?
Have occasionally noticed a 'slight humming' coming from the engine bay when the car has been off and parked for a while in my garage. Normal? What is it?
Member
Joined: Aug 2009
Posts: 115
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E550 2010
humm
I think I know what you're talking about. Its a very subtle hum coming from the engine compartment.
This isn't an engine cooling fan which is much louder. I've noted this hum after my car has been parked for a couple of hours and I open and close the doors. Seems to last for several minutes.
I figured it was normal.
This isn't an engine cooling fan which is much louder. I've noted this hum after my car has been parked for a couple of hours and I open and close the doors. Seems to last for several minutes.
I figured it was normal.
Thread Starter
Super Member
Joined: Sep 2010
Posts: 672
Likes: 1
E350
I think I know what you're talking about. Its a very subtle hum coming from the engine compartment.
This isn't an engine cooling fan which is much louder. I've noted this hum after my car has been parked for a couple of hours and I open and close the doors. Seems to last for several minutes.
I figured it was normal.
This isn't an engine cooling fan which is much louder. I've noted this hum after my car has been parked for a couple of hours and I open and close the doors. Seems to last for several minutes.
I figured it was normal.
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Junior Member
Joined: Jul 2009
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From: San Jose, California
2013 Q7 S-Line, 2010 E350 Sport Sedan P1, 2005 Camry, 2008 Piaggio MP3 250, Sold: 02 C230, 90 Miata
I don't remember mine doing that, I will check it out. I remember an optional button (don't remember the name) on my sold C230 to maintain a desired temperature inside the car for a limited amount of time even after turning off the engine. I don't see a similar option in my W212.
Newbie
Joined: Oct 2010
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i spend numerous time in my benz with he engine off.
and i can hear it on the inside too.
i got me wondering, and i tried to pinpoint the sound.
my guess by now is that it's a little interior fan, refreshing the interior air.
it stops after some time until i put the contact back on and put it off again.
time differs though. sometimes it does it for 10 mintes the next time it stays on for just 2 minutes..
and i can hear it on the inside too.
i got me wondering, and i tried to pinpoint the sound.
my guess by now is that it's a little interior fan, refreshing the interior air.
it stops after some time until i put the contact back on and put it off again.
time differs though. sometimes it does it for 10 mintes the next time it stays on for just 2 minutes..
Member
Joined: Aug 2009
Posts: 115
Likes: 3
E550 2010
The feature you are referring to is available only on the Canada E-class according to the owners manual.
---------------
"I don't remember mine doing that, I will check it out. I remember an optional button (don't remember the name) on my sold C230 to maintain a desired temperature inside the car for a limited amount of time even after turning off the engine. I don't see a similar option in my W212."
---------------
"I don't remember mine doing that, I will check it out. I remember an optional button (don't remember the name) on my sold C230 to maintain a desired temperature inside the car for a limited amount of time even after turning off the engine. I don't see a similar option in my W212."
Last edited by MagicJack; Oct 20, 2010 at 07:48 AM. Reason: forgot to quote
