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

Reply
 
Thread Tools Display Modes
  #1  
Old 01-18-2013, 02:54 PM
capntang capntang is offline
Registered User
Location: SC
 
Join Date: Aug 2009
Posts: 27
Mein Auto: '01 530i 5-speed
Seat Control Module

OK, I assure everyone that I have searched through all the old info on this issue, but I am still left with a driver's seat and steering column that won't adjust.

It appears as though most folks find a loose connector and a broken plug shroud to be the cause of the issue. Unfortunately, I found the connector to be plugged in properly and no broken plastic after removing the seat trim. As a matter of fact, both the plug and control module look like new.

Fuses all look OK, and a quick check of pin 25 on the plug seems to confirm that the module is getting power.

I thought for a second that it may be the ignition switch as I've seen that mentioned, but I have none of the other common symptoms.

I am about to order a new (used) seat control module, but I'm worried I may be overlooking another cause. Has anyone else had the seat control module just die completely?
Reply With Quote
Ads by Google
  #2  
Old 01-18-2013, 04:38 PM
barneyhyphen barneyhyphen is offline
Registered User
Location: Nashville, Tn
 
Join Date: Feb 2008
Posts: 89
Mein Auto: 2000 323i sedan
I have exactly the same problem, also with good switch and no broken plastic. Mine pops the fuse immediately it's turned on.

I'm assuming I (we) have a chafed/worn grounded wire under the seat. Just haven't got round to pulling the seat yet.

BH
Reply With Quote
  #3  
Old 01-18-2013, 08:02 PM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 21,026
Mein Auto: 02 BMW 525i M54 auto 130K
I'm going to have to pass on this one because all I know is when the harness connector slips out of the module, which clearly you said it isn't that problem.

- What to do when both your automatic steering wheel tilt and manual & automatic driver seat control fails (0) (1) (2) (3) (4) (5) (6) (7) (8) & related automatic steering wheel tilt details (1) (2) (3) & what to do if your steering wheel & key cylinder locks in place (1) (2) or if you lose your key and need to program a new one yourself (1) & signs of a failing ignition switch (1) or ring antenna (1) & the BMW TIS for when the ignition switch spins but does not engage (1) & rebuilding a failed ignition switch (0) (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) & how to test your BMW E39 DSC steering wheel sensors (0) (1) (2) (3) (4) (5)
__________________
Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
Reply With Quote
  #4  
Old 01-18-2013, 09:52 PM
capntang capntang is offline
Registered User
Location: SC
 
Join Date: Aug 2009
Posts: 27
Mein Auto: '01 530i 5-speed
Well, I ordered another switch anyway. It wasn't that much money since the plug shroud was broken, so I guess I'll see if it fixes the issue. I figure I can just swap the PCB from the replacement switch into my almost perfect housing.

It seems unlikely since I haven't really seen too many reports of the switch itself being the cause of problems, but I figure it has to be possible for them to fail.

Quote:
Originally Posted by barneyhyphen View Post
I have exactly the same problem, also with good switch and no broken plastic. Mine pops the fuse immediately it's turned on.

I'm assuming I (we) have a chafed/worn grounded wire under the seat. Just haven't got round to pulling the seat yet.

BH
Possibly, though I'd be shocked if it's a worn wire in my case. All the wiring I can see without removing the seat looks like new. That said, I sure hope that's not the issue.

My problem is that I have no way to eliminate the seat control module / switch as the source of the problem ... without removing the seat and tracing wires, that is. If I plug in the replacement switch and the seat and steering column still won't adjust, I'll have to go from there.

Quote:
Originally Posted by bluebee View Post
I'm going to have to pass on this one because all I know is when the harness connector slips out of the module, which clearly you said it isn't that problem.

- What to do when both your automatic steering wheel tilt and manual & automatic driver seat control fails (0) (1) (2) (3) (4) (5) (6) (7) (8) & related automatic steering wheel tilt details (1) (2) (3) & what to do if your steering wheel & key cylinder locks in place (1) (2) or if you lose your key and need to program a new one yourself (1) & signs of a failing ignition switch (1) or ring antenna (1) & the BMW TIS for when the ignition switch spins but does not engage (1) & rebuilding a failed ignition switch (0) (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) & how to test your BMW E39 DSC steering wheel sensors (0) (1) (2) (3) (4) (5)
As a matter of fact, I found all of those links in a previous post of yours and looked through them. As I recall, most or all of them dealt with broken plug shrouds due to broken seat trim, neither of which applies to me ... unfortunately. It sure would be the easier fix.

Thanks anyway!
Reply With Quote
  #5  
Old 01-19-2013, 06:32 AM
dtadrian's Avatar
dtadrian dtadrian is offline
BMW's are like women. $$$
Location: miami
 
Join Date: Jul 2012
Posts: 404
Mein Auto: 1999 BMW 528i T Wagon
Check under driver seat. There's a small module with a yellow connector on it. For ****s and giggles make sure everything on there is tight. Obviously do this with ignition off. Let me know.
Reply With Quote
  #6  
Old 01-24-2013, 11:24 AM
capntang capntang is offline
Registered User
Location: SC
 
Join Date: Aug 2009
Posts: 27
Mein Auto: '01 530i 5-speed
Well, it appears as though it was the switch after all. I received the replacement and quickly tested it. I still need to swap the PCB from the replacement switch into my undamaged housing and install it permanently before I really test it out, but that will have to wait for a new retaining clip to replace the one that I broke when I removed the seat trim.
Reply With Quote
  #7  
Old 05-05-2013, 01:44 PM
clintvad clintvad is offline
Registered User
Location: bellingham, wa
 
Join Date: May 2013
Posts: 5
Mein Auto: 2000 528i
Sure enough! I discovered that the controls on the side of the drivers seat were seperated and broken. I just had to plug the pin thiing back in and all is working again. Poor design in my opinion. Not sure if it was broken/fixed before, or if I just did it. I noticed that getting out of the car, I put lots of weight right on the plasic housing, and it popped off again. MAybe I need to lose some weight, or just be extra careful exiting the vehicle, but how annoying is that going to be!
Reply With Quote
Reply

Bookmarks

Tags
driver seat, power seat, seat control module, steering column


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 04:14 AM.


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