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 > 6 Series > F12 / F13 (2012 - Current)

F12 / F13 (2012 - Current)
The all new 3rd generation 6 series coupe (F13) and convertible (F12) forum. The F06 BMW 6 Series Gran Coupe forum is here

Reply
 
Thread Tools Display Modes
  #1  
Old 12-08-2012, 06:12 AM
Bönz's Avatar
Bönz Bönz is online now
Officially Welcomed to the 'Fest
Location: Michigan
 
Join Date: Jun 2012
Posts: 353
Mein Auto: 650i
Seat Looseness

I couldn't find the original thread on this subject, so forgive me for starting over. (Maybe it was the other forum.) I finally got around to looking under the seat and this is the letter I wrote to BMW. I'll let you know if and when I here back.

There's a second issue I didn't mention, but I didn't want to muddy the waters. I also found that the thigh support can move a little if it's positioned anywhere other than full in.


Letter:

I would like to bring to your attention an issue with the 6 Series front seats that seems to be common amongst many owners based on the forums that I read.

Simply put the front seats have a looseness that allows movement under load when the car is cornering. It does not take much lateral input to generate movement.

I have investigated this problem to isolate the cause. I am an engineer with 30 years automotive experience, so please take my analysis seriously and forward it to the appropriate personnel.

There is a cross-car steel support tube that passes through two (I assume urethane) bushings under the forward edge of the seat frame. This assembly is part of the mechanism used to raise and lower the front edge of the seat cushion. The bushings, attached to the seat cushion pan, are oblong in relation to the diameter of the tube to allow longitudinal movement as the mechanism is raised and lowered. Lateral movement is controlled by flared “stop” features on the steel tube on either side of the outside (driver) bushing. It is the relationship between the sides of this bushing and these stop features that is problematic.

If the front seat edge is adjusted to any position other than full stop (high or low), which places the tube firmly against the bushing, lateral movement can occur between the sides of the bushing and the flares on the tube. This motion is easily felt by the seat occupant as the bushing (and seat) bounce back and forth between the two stops on the tube. Hardly acceptable on this class of automobile.

Many 6 Series owners have taken their cars to the dealership with no resolution. A permanent solution needs to be driven from the top down. It seems a simple solution would be a wider, harder lubricious bushing to prevent the unwanted lateral movement without binding the adjustment mechanism. But I will leave that analysis the the BMW engineering staff.

Thank you for your attention to this important matter. I look forward to a solution and positive response.

Feel free to contact me at any time to discuss this further.

Best regards,
Reply With Quote
Ads by Google
  #2  
Old 12-08-2012, 06:38 AM
southern6er22's Avatar
southern6er22 southern6er22 is offline
Officially Welcomed to the 'Fest
Location: Mobile, AL
 
Join Date: Dec 2011
Posts: 3,529
Mein Auto: BMW 2012 650i xDrive
Great letter. I've been meaning to go have mine looked at. I haven't noticed the thigh support issue, but I do feel the shift in the base of the seat that you described. I'm interested to see what they tell you.
__________________

650i xDrive Coupe (2012), Carbon Black/Black/Gray Poplar, M Sport, Full LEDs, 20" 373M Wheels, ARS,
HUD, CWP, Premium Sound, Nappa Dash w/ Contrast Stitching, Ceramic Controls, BMW Apps, PCD
http://www.youtube.com/user/Southern6er22
http://southern6er22.blogspot.com/
Reply With Quote
  #3  
Old 12-11-2012, 09:24 AM
Bönz's Avatar
Bönz Bönz is online now
Officially Welcomed to the 'Fest
Location: Michigan
 
Join Date: Jun 2012
Posts: 353
Mein Auto: 650i
Here's the reply. In the famous words of Harold Ramos "short, but pointless":

Thank you for contacting BMW of North America, LLC regarding your 2012 BMW 650i.

Our BMW engineering and design teams are dedicated to creating vehicles that move today’s consumers and their demand for enhanced utility and more versatility. Customer feedback plays an integral role in improving product design and development. We appreciate the time you have taken to share your thoughts; your sentiments will be heard and considered.

The BMW Customer Relations and Services Department is available Monday through Friday from 9:00 A.M. to 9:00 P.M., Eastern Standard Time. You can reach us at 1-800-831-1117.

Sincerely,

Erin Roberts
Customer Relations and Services
Representative
Reply With Quote
  #4  
Old 12-11-2012, 06:06 PM
Sandlapper Sandlapper is offline
Sandlapper
Location: South Carolina
 
Join Date: Dec 2008
Posts: 171
Mein Auto: '13 650GC, '14 M6 coupe
I took my 2012 650i in for the first annual oil change last month and the SA said there was a recall on a seat problem, something about bolts on the seat floor. He said he would have to get the parts ordered and they would call me. They called about 4 days later and I took it in. Took about an hour and they said it was a recall about some bolts on the seat assembly, which they replaced. Don't know if this is the same problem you had (I hadn't noticed any looseness on mine) but it was a BMW recall item. Hope this helps.
__________________

2014 M6 Singapore Grey
2013 650iGC M Sport Black Sapphire Metallic
2012 650i Black Sapphire Metallic-Sold
2011 535i Sport Black Sapphire Metallic-Sold
2008 650i Space Grey-Sold
2007 335i Space Grey Coupe-Sold
Reply With Quote
  #5  
Old 12-14-2012, 03:54 AM
Bönz's Avatar
Bönz Bönz is online now
Officially Welcomed to the 'Fest
Location: Michigan
 
Join Date: Jun 2012
Posts: 353
Mein Auto: 650i
Thanks, but that's a different issue, which I also had corrected by the dealer. I will keep the forum posted if I hear anything about the bushing issue. My dealer is working it from their angle too. In the meantime, I think I have a bandaid solution which I will try this weekend. If successful, I will share with the forum.
Reply With Quote
  #6  
Old 02-05-2013, 09:21 AM
coolhandshin coolhandshin is offline
Registered User
Location: Seoul, Korea
 
Join Date: Aug 2011
Posts: 39
Mein Auto: '08 528is, '11 650i Conv.
ok so i thought this seat looseness issue was nothing to do with me

until one day i start feeling little squikiness on my thighs when on hard corners, especially when driving out of busy parking lots

the problem is that while the actual thigh or seat movement is really small, the squicky feeling, something like continous intermittent clicking of some material or vibration is definitely and annoyingly felt on corners.

so i took it up to the service center, they had a look at it and they fastened all the bolts they can and greased certain parts. no improvement.

i decided to take a closer look at it and just like OP described, front part of the seat is lodged by two plastic ring on a thick black tube. these two white platic rings are designed to move clockwisely AND laterally, and was the cause of friction felt on my thighs.

i bought myself a can of spray on grease, sprayed it, and the problem was neatly gone away. am i simply hiding the fault? i dont think so because the lateral movement was so tiny to start with. it was the vibration that was so annoying; the seat movement cannot be noticed.

i've noticed the new m6 on display did not have any changes on the seat design; but it did have plenty of white grease all over the white platic ring. seems the winter temperature here did a role in making that bad vibration

hope this info helps i had some headaches now im so relieved
Attached Thumbnails
Click image for larger version

Name:	ImageUploadedByBimmerApp1360084123.242269.jpg
Views:	125
Size:	109.8 KB
ID:	360928  

Last edited by coolhandshin; 02-05-2013 at 09:26 AM.
Reply With Quote
  #7  
Old 02-06-2013, 09:14 AM
Bönz's Avatar
Bönz Bönz is online now
Officially Welcomed to the 'Fest
Location: Michigan
 
Join Date: Jun 2012
Posts: 353
Mein Auto: 650i
Thanks Cool. I have noticed that there is no movement when the front edge is at either extreme (full up or full down). In these cases the bar is tight against the white bushing preventing any movement or vibration. I was going to try a thick grease as you suggest but it has been too damn cold to work on my car. I am glad to hear this works. I will do the same when my garage floor goes above freezing.
Reply With Quote
  #8  
Old 03-10-2013, 04:22 AM
podon podon is offline
Registered User
Location: Italy
 
Join Date: Dec 2012
Posts: 38
Mein Auto: Bmw 640d
I have the same issue.
Can you explain how to access to the under of the seat and put grease. I'm noot so keen od doing this kind of things, but the noise drive me crazy!!!
Reply With Quote
  #9  
Old 03-10-2013, 05:44 AM
Bönz's Avatar
Bönz Bönz is online now
Officially Welcomed to the 'Fest
Location: Michigan
 
Join Date: Jun 2012
Posts: 353
Mein Auto: 650i
Quote:
Originally Posted by podon View Post
I have the same issue.
Can you explain how to access to the under of the seat and put grease. I'm noot so keen od doing this kind of things, but the noise drive me crazy!!!
You can ask your dealer to do it. It is a tough reach and requires some flexibility. Just raise the front edge of the seat to its highest point and, kneeling from outside the car, bend over the threshold into the footwell and go for it.

You will see a steel bar running laterally through two white colored bushings. You want to apply a thick grease in and around these bushings. Good luck.
Reply With Quote
  #10  
Old 03-10-2013, 06:34 AM
haastx10's Avatar
haastx10 haastx10 is offline
RocknDoc
Location: Texas
 
Join Date: Feb 2012
Posts: 171
Mein Auto: 2012 F02 750Lix
Quote:
Originally Posted by Sandlapper View Post
I took my 2012 650i in for the first annual oil change last month and the SA said there was a recall on a seat problem, something about bolts on the seat floor. He said he would have to get the parts ordered and they would call me. They called about 4 days later and I took it in. Took about an hour and they said it was a recall about some bolts on the seat assembly, which they replaced. Don't know if this is the same problem you had (I hadn't noticed any looseness on mine) but it was a BMW recall item. Hope this helps.
I've also noticed some "greater than normal" looseness of the drivers seat in my 2012 F12, especially when pulling the backrest forward to get into the back seat... Is this related to the recall? Just had my vehicle in for service and nobody mentioned a recall... Do you have specifics on which vehicles affected?
__________________
________________________________________
2012 BMW F02 750LiX, Alpine White, M-Sport, Dinan Stage 5, Dinan Exhaust, H&R Sport Springs, Coded, Paddles.
2012 BMW F12 650iC, Mineral White, Dinan Stage 3, Dinan Exhaust, Dinan Shockware, Coded.


Reply With Quote
  #11  
Old 03-20-2013, 12:25 AM
roadsta roadsta is offline
Officially Welcomed to the 'Fest
Location: Brisbane, Australia
 
Join Date: Dec 2011
Posts: 117
Mein Auto: 2012 650i MSport Coupe
Bonz, anyone else - have you had answers on this? Any new information?

R.
__________________
///M _650i Coupe (Sapphire Black)
Reply With Quote
  #12  
Old 03-20-2013, 04:36 AM
Bönz's Avatar
Bönz Bönz is online now
Officially Welcomed to the 'Fest
Location: Michigan
 
Join Date: Jun 2012
Posts: 353
Mein Auto: 650i
Not me. Mine seems to be getting worse. I going to take it in to my SA. Need new wiper blades anyway.
__________________
Reply With Quote
  #13  
Old 03-20-2013, 09:49 AM
Jimm652 Jimm652 is offline
Registered User
Location: NYC
 
Join Date: Apr 2012
Posts: 27
Mein Auto: 650xi Coupe
I had the same exact problem, each time i turned the seat shifted. I took it to my dealer and they replaced the whole underworkings (for lack of a better term) and now its perfect.
Reply With Quote
  #14  
Old 03-20-2013, 10:33 AM
PersianGodFatha PersianGodFatha is offline
Registered User
Location: City Of Angels
 
Join Date: Nov 2012
Posts: 17
Mein Auto: 640i Coupe Msport
Had the same issue with my car, took it in on Feb 5th, they gave it back to me on March 14th, no you' didn't read hat wrong. Luckily I had a 550 loaner. My seat was making a knocking noise, and felt like it would move out of place when I was driving, specially while making turns. Pretty crazy if you ask me, another issue I had was my ASA'S throwing the car into neutral when I would get of the brake pedal sometimes...
Reply With Quote
  #15  
Old 03-28-2013, 03:15 PM
southern6er22's Avatar
southern6er22 southern6er22 is offline
Officially Welcomed to the 'Fest
Location: Mobile, AL
 
Join Date: Dec 2011
Posts: 3,529
Mein Auto: BMW 2012 650i xDrive
Just spoke with my SA, and she said that the shifting/loose seat is a known issue to BMW. They're apparently working on a fix and will notify us when it's available. I'll update once I get my car back and I hear more.
__________________

650i xDrive Coupe (2012), Carbon Black/Black/Gray Poplar, M Sport, Full LEDs, 20" 373M Wheels, ARS,
HUD, CWP, Premium Sound, Nappa Dash w/ Contrast Stitching, Ceramic Controls, BMW Apps, PCD
http://www.youtube.com/user/Southern6er22
http://southern6er22.blogspot.com/
Reply With Quote
  #16  
Old 03-28-2013, 03:27 PM
Bönz's Avatar
Bönz Bönz is online now
Officially Welcomed to the 'Fest
Location: Michigan
 
Join Date: Jun 2012
Posts: 353
Mein Auto: 650i
I'm sure it was my letter that did it.
__________________
Reply With Quote
  #17  
Old 03-28-2013, 04:13 PM
svp66 svp66 is offline
Officially Welcomed to the 'Fest
Location: USA
 
Join Date: Nov 2011
Posts: 112
Mein Auto: 650i
I used a Teflon bike chain spray in exactly the same spots as in the picture (thanks for the tip Bonz and collhandshin!). Looseness and squeak all gone.
__________________

Last edited by svp66; 03-28-2013 at 04:14 PM.
Reply With Quote
  #18  
Old 03-28-2013, 09:48 PM
southern6er22's Avatar
southern6er22 southern6er22 is offline
Officially Welcomed to the 'Fest
Location: Mobile, AL
 
Join Date: Dec 2011
Posts: 3,529
Mein Auto: BMW 2012 650i xDrive
They really didn't have any additional info for me when I picked up my car. The gist of what they told me is that they've recognized the problem and are working on getting the parts together to distribute to the service centers. I guess this is a "to be continued..."
__________________

650i xDrive Coupe (2012), Carbon Black/Black/Gray Poplar, M Sport, Full LEDs, 20" 373M Wheels, ARS,
HUD, CWP, Premium Sound, Nappa Dash w/ Contrast Stitching, Ceramic Controls, BMW Apps, PCD
http://www.youtube.com/user/Southern6er22
http://southern6er22.blogspot.com/
Reply With Quote
  #19  
Old 03-28-2013, 10:00 PM
southern6er22's Avatar
southern6er22 southern6er22 is offline
Officially Welcomed to the 'Fest
Location: Mobile, AL
 
Join Date: Dec 2011
Posts: 3,529
Mein Auto: BMW 2012 650i xDrive
Per the invoice, "found slack in rail, parts for repair are not available, see advisor."
__________________

650i xDrive Coupe (2012), Carbon Black/Black/Gray Poplar, M Sport, Full LEDs, 20" 373M Wheels, ARS,
HUD, CWP, Premium Sound, Nappa Dash w/ Contrast Stitching, Ceramic Controls, BMW Apps, PCD
http://www.youtube.com/user/Southern6er22
http://southern6er22.blogspot.com/
Reply With Quote
  #20  
Old 03-30-2013, 06:56 AM
svp66 svp66 is offline
Officially Welcomed to the 'Fest
Location: USA
 
Join Date: Nov 2011
Posts: 112
Mein Auto: 650i
Meanwhile it is worth trying the lubricant trick - nothing to lose. Just push your seat as high and as further back as it goes, get a flashlight and spray lubricant on those two joints
__________________
Reply With Quote
  #21  
Old 03-30-2013, 08:10 PM
southern6er22's Avatar
southern6er22 southern6er22 is offline
Officially Welcomed to the 'Fest
Location: Mobile, AL
 
Join Date: Dec 2011
Posts: 3,529
Mein Auto: BMW 2012 650i xDrive
I definitely might do that. Mine isn't too bothersome, but the imperfection annoys me.
__________________

650i xDrive Coupe (2012), Carbon Black/Black/Gray Poplar, M Sport, Full LEDs, 20" 373M Wheels, ARS,
HUD, CWP, Premium Sound, Nappa Dash w/ Contrast Stitching, Ceramic Controls, BMW Apps, PCD
http://www.youtube.com/user/Southern6er22
http://southern6er22.blogspot.com/
Reply With Quote
  #22  
Old 03-31-2013, 01:41 PM
chadyork chadyork is offline
Registered User
Location: York, PA
 
Join Date: Apr 2012
Posts: 5
Mein Auto: 650i convertible
I had this problem back in the fall after owning my 650 vert for 6 months. The dealer made a repair after getting a part from BMW. I've not noticed the problem since, but this is my summer car and I only drove out perhaps 1000 miles since the repair.
Reply With Quote
  #23  
Old 04-01-2013, 09:04 AM
Bönz's Avatar
Bönz Bönz is online now
Officially Welcomed to the 'Fest
Location: Michigan
 
Join Date: Jun 2012
Posts: 353
Mein Auto: 650i
Funny that Chad's dealer has a specific cure (part from BMW) while some others are still waiting (per Southy's SA). I finally got around to the lube fix (used a thicker syn grease I applied with my finger - hold the jokes) and it seems to have fixed the problem, or at least it's less noticeable. I don't know how long this will last, but I'm thinking of cancelling my service appointment until my SA has a documented permanent fix from BMW in hand.
__________________
Reply With Quote
  #24  
Old 05-23-2013, 09:45 PM
roadsta roadsta is offline
Officially Welcomed to the 'Fest
Location: Brisbane, Australia
 
Join Date: Dec 2011
Posts: 117
Mein Auto: 2012 650i MSport Coupe
/

The very good service team at my dealer (Westside BMW in Brisbane) sorted this issue out for me. This is what they did under warranty:

Carried out inspection into seat moving. Removed and replaced seat and stripped base, replaced cushion shell and bushes. Rechecked operation. It also mentions a "Grease Campaign".

Cheers

R.
__________________
///M _650i Coupe (Sapphire Black)
Reply With Quote
  #25  
Old 05-24-2013, 05:31 AM
unlaidenswallow unlaidenswallow is offline
Registered User
Location: New Jersey
 
Join Date: Nov 2006
Posts: 66
Mein Auto: 650xi vert
After initially "not finding anything wrong" I had the service manager take a look. He just sat in it and shifted the seat with his body weight forward and back and side to side and I didn't have to say another word - he said totally unacceptable.

A couple days ago they replaced the seat rail (PN 52107309661) and now good as new! Only issue was I lost my two memory settings - not sure if that's because they took the seat out or for some reason the mechanic reset them. I forgot how long it took me to get those right
__________________

2012 650i xDrive Vert - Mojave / Cinnamon

Driver Assist / Cold Weather / Premium Sound / Luxury Seating / Leather instrument panel / Apps
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 6 Series > F12 / F13 (2012 - Current)
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 04:37 AM.


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