New 2009 2010 BMW Z4 - ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   New 2009 2010 BMW Z4 - ZPOST > BMW Z4 Forum (E89) > 2009-Current Z4 Forum (E89) General Discussion

Post Reply
 
Thread Tools Search this Thread
      09-26-2012, 11:49 AM   #1
AsiaKid
Lieutenant
54
Rep
560
Posts

Drives: GTR/Gallardo Spyder/X5
Join Date: Jul 2011
Location: Hong Kong

iTrader: (0)

whining noise when u unlock doors

anyone know waht that sound is? I thought it was the adaptive suspension raising or lowering (kinda made sense right?) but its not i dun think.. what is that whining noise right hwen u unlock the doors.

Thanks guys
Appreciate 0
      09-26-2012, 12:10 PM   #2
redhot
Private First Class
8
Rep
138
Posts

Drives: 09 Z4 sDrive35i
Join Date: Feb 2012
Location: Chandler

iTrader: (0)

Fuel pump priming maybe.....
__________________
09 Z4 35i
Appreciate 0
      09-26-2012, 01:53 PM   #3
juhap
Lieutenant
juhap's Avatar
Finland
14
Rep
530
Posts

Drives: sDrive35i
Join Date: Jun 2009
Location: Finland

iTrader: (0)

Quote:
Originally Posted by redhot View Post
Fuel pump priming maybe.....
+1

Didn't have this noise until my dealership applied a software update to fix the HPFP whine.
Appreciate 0
      09-28-2012, 06:45 AM   #4
ManiacGT
Major
ManiacGT's Avatar
United Kingdom
84
Rep
1,448
Posts

Drives: Z4 sDrive 35i
Join Date: Jan 2011
Location: Manchester, UK

iTrader: (0)

Adaptive Suspension height is fixed, there is no raising lowering, it's simply 10mm less in height than normal suspension.

The whining is the LPFP priming the main HPFP fuel pump to prevent long turnovers when starting. As others have said, that became apparent after a software upgrade when HPFP issues were common.
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 03:50 AM.




zpost
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