Bimmerpost
3
/
4 Series
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
Technical Topics iDrive, Nav, Phone, Audio, Video, Cameras, Electronics MGU fan noise?

Post Reply
 
Thread Tools Search this Thread
      11-10-2021, 02:55 PM   #1
Yossi123
Private First Class
78
Rep
177
Posts

Drives: 330xi G21
Join Date: Oct 2019
Location: EU

iTrader: (0)

MGU fan noise?

Today for the first time in two years I've heard a hissing fan noise from centre dashboard. It wasn't very loud but distinctive and absolutely noticeable at low audio volume. It started near the end of a long drive (5 hours) and lasted for a while even after shutting the car down.
I am absolutely positive is wasn't HVAC.

I suppose it was the fan of the MGU unit? Is it normal o is it a sign that the unit is overheating? I was listening to the music (quietly) and using carplay for the entire time (5 hours).

Never heard it before and now wondering if I should report it to the dealer.
Appreciate 0
      11-24-2021, 01:36 AM   #2
erawamai
First Lieutenant
erawamai's Avatar
Australia
162
Rep
305
Posts

Drives: BMW 330i G21
Join Date: Nov 2005
Location: Sydney, Australia

iTrader: (0)

Quote:
Originally Posted by Yossi123 View Post
Today for the first time in two years I've heard a hissing fan noise from centre dashboard. It wasn't very loud but distinctive and absolutely noticeable at low audio volume. It started near the end of a long drive (5 hours) and lasted for a while even after shutting the car down.
I am absolutely positive is wasn't HVAC.

I suppose it was the fan of the MGU unit? Is it normal o is it a sign that the unit is overheating? I was listening to the music (quietly) and using carplay for the entire time (5 hours).

Never heard it before and now wondering if I should report it to the dealer.
I had the fan come on last time I did a software update. I guess the MGU is working pretty hard!
Appreciate 0
      11-29-2021, 02:11 AM   #3
ramparts
Colonel
1116
Rep
2,237
Posts

Drives: M40i
Join Date: Apr 2015
Location: UK

iTrader: (0)

Quote:
Originally Posted by erawamai View Post
I had the fan come on last time I did a software update. I guess the MGU is working pretty hard!
Yup there's a fan in those that comes on during ECU flashes!
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -5. The time now is 06:37 AM.




g20
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST