Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-17-2023, 02:25 PM
Member
 
Join Date: Sep 2023
Location: Colorado
Posts: 5
dgdavidson is on a distinguished road
2012 x35d. What are these items?

This is my fourth BMW.

Car has 98k miles on it and Iím doing the usual exploration.


Sensor dangling near the cabin air filters.


Unit at left front corner of engine makes buzzing sound even with the engine off.





Hardware found lying loose in the cabin air filter compartment.




Sent from my iPhone using Tapatalk
Reply With Quote

Sponsored Links

  #2  
Old 09-17-2023, 04:44 PM
Member
 
Join Date: Jul 2023
Location: Netherlands
Posts: 39
Daytonawim is on a distinguished road
The first foto, is the air polution sensor, if you select the correct button, the airvent valve will close automatic when the air is dirty. ( thats what understand from the Manuel)
Reply With Quote
  #3  
Old 09-18-2023, 12:06 AM
Member
 
Join Date: Sep 2023
Location: Colorado
Posts: 5
dgdavidson is on a distinguished road
Quote:
Originally Posted by Daytonawim View Post
The first foto, is the air polution sensor, if you select the correct button, the airvent valve will close automatic when the air is dirty. ( thats what understand from the Manuel)

Thank you. Found it on Realoem.


Sent from my iPad using Tapatalk
Reply With Quote
  #4  
Old 09-18-2023, 04:06 PM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,672
ard is on a distinguished road



Pic 2: throttle body

Reply With Quote
  #5  
Old 09-18-2023, 05:08 PM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,672
ard is on a distinguished road
pic 3:


https://www.ecstuning.com/b-genuine-...g/11612246947/
Reply With Quote
  #6  
Old 09-18-2023, 11:46 PM
Member
 
Join Date: Sep 2023
Location: Colorado
Posts: 5
dgdavidson is on a distinguished road
Quote:
Originally Posted by ard View Post

Realoem says thereís 7 of these on the intake manifold. How did it get in the cabin filter compartment? More to explore. Thanks for the pointer.


Sent from my iPad using Tapatalk
Reply With Quote
  #7  
Old 09-18-2023, 11:47 PM
Member
 
Join Date: Sep 2023
Location: Colorado
Posts: 5
dgdavidson is on a distinguished road
Quote:
Originally Posted by ard View Post



Pic 2: throttle body


Thank you. Any ideas about the buzzing sounds?


Sent from my iPad using Tapatalk
Reply With Quote
  #8  
Old 09-19-2023, 01:45 AM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,672
ard is on a distinguished road
My guess is a prior owner (or mechanic) was digging around in the intake and set this up on the cowling, it dropped into the fresh air intake? Just a guess. Id wonder what they were doing digging around.


Not sure about the buzzing. I think diesels have a throttle shut off that will operate after the motor turns off. Could be something going on with that? mine makes some noises when off (or shortly after shut off, then quiet), but has since mile 1- so Ive not paid much attention to it.

Last edited by ard; 09-19-2023 at 12:06 PM.
Reply With Quote
  #9  
Old 09-19-2023, 09:43 AM
Qsilver7's Avatar
Member
 
Join Date: Oct 2012
Location: Indiana, USA
Posts: 3,512
Qsilver7 is on a distinguished road
Quote:
Originally Posted by Daytonawim View Post
The first foto, is the air polution sensor, if you select the correct button, the airvent valve will close automatic when the air is dirty. ( thats what understand from the Manuel)

Here's more technical info that explains what the AUC sensor is detecting...and when it does...it closes the fresh air flaps of the IHKA system:


Sensor for automatic air recirculation control

  • The AUC sensor is fitted on the microfilter compartment. The AUC sensor detects the following pollutant emissions from spark-ignition and diesel engines:
    • Hydrocarbons (CH )
    • carbon monoxide (CO)
    • Nitrogen oxides (nitrogen monoxide NO, nitrogen dioxide NO2)



    The junction box supplies the AUC sensor with voltage. The junction box electronics evaluate the data of the AUC sensor. The junction box electronics unit transmits relevant data to the IHKA control panel (via the K‐CAN).
__________________
Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.
  • 2015 f06 650ix GC (Moonstone exterior/Cohiba brown Merino Leather interior)
  • 2014 f15 X5 50i (Space Gray exterior/Mocha Nappa Leather interior)
Reply With Quote
  #10  
Old 09-19-2023, 01:10 PM
Member
 
Join Date: Sep 2023
Location: Colorado
Posts: 5
dgdavidson is on a distinguished road
Quote:
Originally Posted by Qsilver7 View Post
Here's more technical info that explainsÖ

Thank you.


Sent from my iPhone using Tapatalk
Reply With Quote
Reply

Bookmarks

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 08:17 PM.
vBulletin, Copyright 2023, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
© 2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.