Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Arnott
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 01-02-2021, 12:30 AM
Member
 
Join Date: Jan 2021
Location: Denver
Posts: 5
PascalforWSOP is on a distinguished road
Door function control module preventing sleep mode, power drain.

Today I made progress in diagnosed my overnight power drain— Fuse 20 responsible for “door function control module, driver side”.

I was already noticing some problems related to the driver side door with fuse in (and thus some of the following may be the underlying issue).

With fuse IN;
- Can’t lock driver side door with key fob, have to insert key manually.
- Driver window is always “active”, even with car off no matter what the condition is and other driver-side window controls follow expected conditions. I can always roll up or down the driver window no matter what.
- Car doesn’t enter sleep mode
- Passenger side mirror frequently “twitches” like it’s trying to adjust itself with no input.

With fuse OUT:
- Notably, car can enter sleep mode and parasitic drain is no more
- Security system doesn’t arm
- Obviously can’t use any window switches on driver side, and still have to manually lock

Seems to me to be an electronic issue. any guidance on how to proceed?
Reply With Quote

Sponsored Links

  #2  
Old 01-02-2021, 12:59 AM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 10,817
andrewwynn will become famous soon enough
I have a feeling it's the driver door switch module. Unplug just that module put the fuse back in
__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)
Reply With Quote
  #3  
Old 01-02-2021, 08:45 PM
Member
 
Join Date: Jan 2021
Location: Denver
Posts: 5
PascalforWSOP is on a distinguished road
I removed the master switch component and now
-Car goes to sleep
- Alarm system arms

I’ll try to go to a junkyard at next opening and see if replacing the component does it. or if it’s something further down the line.

Thanks for the guidance so far
Reply With Quote
  #4  
Old 01-03-2021, 12:35 AM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 10,817
andrewwynn will become famous soon enough
You can open up the box there is likely just some corrosion you can clean off.

The problem with scrap parts is it's a design flaw and many of the cars have the same problem.

When window open an rain gets in. It is literally funneled to the door switxh PCB.

I've rebuilt a few of them when the window fails to go down or up.
__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)
Reply With Quote
  #5  
Old 01-03-2021, 12:36 AM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 10,817
andrewwynn will become famous soon enough
The DLA is the only thing I think is down stream but you could unplug just it and do the same test.
__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)
Reply With Quote
  #6  
Old 01-03-2021, 10:28 PM
Member
 
Join Date: Jan 2021
Location: Denver
Posts: 5
PascalforWSOP is on a distinguished road
andrew,

you were exactly right. I opened up that switch board and it had already been TAMPERED with. must have been from previous owner, with new problems showing up now...

Ended up going w the scrap parts and all electronics are working as expected, the door even locks with the key fob now (was planning an actuator swap...)!

Thank you for the guidance the last couple days
Reply With Quote
  #7  
Old 01-04-2021, 01:53 AM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 10,817
andrewwynn will become famous soon enough
Any time I take a door apart I cut the bottom corner of the switch module off. Every one I've worked on had corrosion inside
__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)
Reply With Quote
  #8  
Old 07-11-2021, 11:54 AM
Member
 
Join Date: Jun 2021
Location: Austin, TX
Posts: 1,422
X5chemist is on a distinguished road
Good information. Mine has a "Deactivation criterion for window operation: error". So it won't sleep. The battery was changed out on Feb 6. No sleep mode was first noticed then. Mid Feb we had we had the huge snow storm! All that snow melted! Plus it has rained like crazy since then too. A new door module switch is cheap. I think I'll order a new one. I'll follow up my no sleep post and link to this one.
__________________
'06 X5 3.0i - bought @143,123 miles (12/26/20)
Reply With Quote
  #9  
Old 07-11-2021, 11:56 AM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 10,817
andrewwynn will become famous soon enough
Cut the bottom corner off before installing. It's a design flaws that water will pool on the circuit board from the smallest amount to that comes in the window (think: going through drive thru)
__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)
Reply With Quote
  #10  
Old 07-11-2021, 12:05 PM
Member
 
Join Date: Jun 2021
Location: Austin, TX
Posts: 1,422
X5chemist is on a distinguished road
Cool. Now, how to find out if mine has auto dim mirrors.
__________________
'06 X5 3.0i - bought @143,123 miles (12/26/20)
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 07:03 PM.
vBulletin, Copyright 2024, 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.