Whirring Noise - MBWorld.org Forums

Feb 23, 2005 | 01:08 AM

markseven

Thread Starter

Junior Member

Joined: Nov 2004

Posts: 69

Likes: 0

From: Orange County, CA

2002 C240 - 2000 540iT

Whirring Noise

Hello all,

Our 02' C240 is making a very slight whirring noise when it's parked (engine off, ignition key not in it's receptacle). I believe the sound is coming from the HomeLink/rear view mirror area. Any thoughts?

Thank You,
Mark

Feb 23, 2005 | 12:31 PM

CclassRun

Member

Joined: Dec 2004

Posts: 182

Likes: 0

From: Compton

02 c240

i notice this also...believe it is some kind of fan that continues to run after u turn off car. although i also notice this when i first get in. hmmmm

Feb 23, 2005 | 02:25 PM

MB-BOB

Admin Alumni

Joined: Nov 2001

Posts: 8,143

Likes: 19

See Garage

There is a fan in the overhead console area. You can hold a 1/2" x 1/2" piece of tissue paper over the inlet grill and the fan will draw it and hold it against the grill. The fan pulls air over the interior temperature sensor. It runs all the time.

Feb 23, 2005 | 02:56 PM

markseven

Thread Starter

Junior Member

Joined: Nov 2004

Posts: 69

Likes: 0

From: Orange County, CA

2002 C240 - 2000 540iT

Thanks guys, glad to 'hear' this is normal.

MB-BOB/All, the ambient interior temperature of our C always seems to be toasty, no matter how cold it is outside. Any ideas?

Thanks Again,
Mark

Feb 23, 2005 | 06:46 PM

amdeutsch

Administrator

Joined: Sep 2002

Posts: 15,769

Likes: 37

From: www.Traben-Trarbach.de

MPG+ ROLFCOPTER

Quote:

Originally Posted by markseven

Thanks guys, glad to 'hear' this is normal.

MB-BOB/All, the ambient interior temperature of our C always seems to be toasty, no matter how cold it is outside. Any ideas?

Thanks Again,
Mark

Ambient temperature by definition is just that; ambient. If it is toasty inside, you: 1) need to manually change the temp or 2) have a faulty module. I believe there is a TSB out regarding set points on the climate control. Link