Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

Thread Tools Display Modes
Old 10-11-2014, 10:14 AM
Djrichyrich Djrichyrich is offline
Registered User
Location: Colorado
Join Date: Jul 2014
Posts: 1
Mein Auto: 1997 540I
idenitification: Engine humming under brake fluid reservoir

I have been hearing humming coming from the engine lately and I may have been able to identify the parts that have been causing it. I attached pictures of these parts.

I usually hear it as soon as i turn the key to the on position, the noise comes and goes as I drive but for the most part it is heard on the start up.
Would you guys help me figure what these two parts are?
has anyone else had this experience, is the buzzing bad?
Also would I need to replace them?

thanks for help.(sorry for the pictures BTW. all i had was a potato)
Attached Thumbnails
Click image for larger version

Name:	photo 3.JPG
Views:	37
Size:	132.7 KB
ID:	469335   Click image for larger version

Name:	photo 2.JPG
Views:	36
Size:	124.9 KB
ID:	469336   Click image for larger version

Name:	photo 1.JPG
Views:	27
Size:	111.3 KB
ID:	469337   Click image for larger version

Name:	image (2).jpeg
Views:	26
Size:	132.0 KB
ID:	469338   Click image for larger version

Name:	image (1).jpeg
Views:	25
Size:	144.0 KB
ID:	469339  

Click image for larger version

Name:	image.jpeg
Views:	28
Size:	132.0 KB
ID:	469340  

Last edited by Djrichyrich; 10-11-2014 at 10:23 AM.
Reply With Quote
Old 10-11-2014, 02:22 PM
edjack edjack is offline
Officially Welcomed to the 'Fest
Location: San Jose, CA
Join Date: May 2007
Posts: 9,410
Mein Auto: '97 540i 6 speed
Turn off the HVAC: Hold the blower speed toggle until all the LEDs are off. It might be the heater control valve, the pic of which you've captured.

Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.
Reply With Quote


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -7. The time now is 03:29 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms