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
  #21  
Old 04-23-2015, 06:24 PM
BigLion's Avatar
Member
 
Join Date: Jan 2012
Location: Abu Dhabi, UAE
Posts: 163
BigLion is on a distinguished road
Thanks so much PropellerHead - I was trying to describe the one-off hard shift into second (only on cold starting) firstly to my regular shop guys, and also on this board once; sounds like I had the same issue with my '06 4.8iS, however now there is a shudder between 3-4 at > 3,000 rpm, without such a hard lurch into 2nd, but this could be a separate issue!

Another E53 owner with a daughter at my kids school tipped me off about a local guy called 'Mike the Mechanic' here in Abu Dhabi who is an X5 owner, as you say - I talked to him today and he said the same about diagnosing problems with engine management and sensors before offering to strip and rebuild the Tranny. I'm also thinking hard about the possible financial consequences (the wife is 60% made up to make me get a Tahoe, I'm sure) but he seems a straight-up guy, so will go for it in the coming week - after pay-day, of course
__________________
----------------------------------------------------------------
2006 X5 4.8iS (facelift) in Imolarot + Ivory leather & alcantara headliner
1999 E46 323i in Imolarot II + Grey nappa
1990 E30 320iSE Sterlingsilber
Reply With Quote

Sponsored Links

  #22  
Old 04-23-2015, 06:38 PM
Member
 
Join Date: Sep 2011
Location: Calgary
Posts: 747
Doru is on a distinguished road
Quote:
Originally Posted by Doru View Post
Mike, there could be several things that could cause the hard 1-2 shift. I pdf'd the page, and once I'm home I will post it.
In my case, I knew my tranny was OK (it was serviced not too long ago, and had some minor parts changed). All of a sudden it started to have the 1-2 hard shifting. Really bad.
I tried connecting the laptop, it would recognize the car, it would communicate with all modules except the tranny, no matter what I did. This wasn't my first experience when the cars modules would get "corrupted/buggered up". So I removed the battery cables, touched both leads and re-attached to the battery. After this, I was able to communicate with the tranny module and reset/upload the latest software.

With the ZF 6HP26 tranny (facelift vehicles) there is a caveat: These cars DO NOT HAVE the EGS module like the previous versions. The electronics module is contained within the mechatronics. This module is called different and you HAVE TO SELECT that module. I will revisit this post tonight with the correct name and a pdf I made on how to upgrade/re-install the software on these cars. There is a specific set of codes (numbers) you have to type in once you select the correct module (Progman SSS or GT1).

I also read numerous posts on the net where people "had to" change the whole mechatronics module in order to fix the transmission jerk. What I think happens, is they didn't know about the pdf I will post when I'm back from work, and maybe didn't know about the fact that the transmission module is sealed inside the mechatronics. Basically earlier cars = control unit (in the tranny) + EGS. Facelift cars: mechatronics (which has the control unit + EGS which is called different in the same unit).

If you somehow manage to select EGS and try to update that one in a facelift car, either you cannot do it, or if you can (I doubt it) nothing will happen, and the jerk will never be fixed. Resetting the adaptation values via the key in Pos II with the gas pedal all the way depressed for 30 seconds will NOT address the issue, because in this instance, the car also cannot communicate with the module inside the mechatronics. As I said in order to reset it, you take off the battery cables.

These corruption of modules can happen on any car that might exhibit a slightest battery drop combined with I don't know what - probably a sudden big electric consumer that kicks in at that particular moment. As I said, I had this happen on 2 of my cars (e46 & e53). Also, this issue is probably why BMW switched to the awkward "battery registration" on newer cars, because they have an extra module that keeps tabs on the state of the battery - probably that module does not allow electronically to get modules corrupted by lack of electric juice.

I will post later the correct procedure on how to reset the tranny and get rid of the 1-2 hard shifting. It worked great in my case.

Cheers
Quote:
Originally Posted by Doru View Post
When the 6HP26 tranny came out and was installed on various BMW iterations, most of these cars exhibited the 1-2 hard shift issue. BMW tried fixing it with I think 1 or 2 different software which failed. The last version of the software, however fixed this hard shifting issue. I am not sure which the number is or what year it was (sometime between 2007-2009 I believe), but if you have the latest GT1/INPA/Progman SSS, then you should have this version. When I re-flashed the tranny, I know I had the latest, but as I said it "glitched" and went in the 1-2 hard shifting mode, but I omitted to write down the software version.
If the vehicle runs fine, don't touch it. If for whatever reason it starts to exhibit the 1-2 hard shifting pattern, the first step is to re-flash the tranny module. When doing it with the latest GT1/Progman SSS software, when programming, the software will prompt you what software version will be replaced. In my case it was replaced with the same software, so I know I had the latest.

I found the link with the 6HP26 issues and possible fixes. Tonight I will update with the pdf on how to program the tranny and the numbers you have to use for the different 4.4 and 4.8 transmissions.
Quote:
Originally Posted by Doru View Post
Sorry guys for being late, but there was some playoff hockey I had to attend, and my Flames just burned the Canucks. I hope they will manage to burn them another 3 times. Go Flames!!!!

So attached is the pdf. If you ever have the 1-2 hard shift situation, and you know 100% that the ATF level is good and the filter is not clogged, just try to re-flash the latest software. This is for the 6HP26 transmission with Mechatronic.
When programming, you have to select GKE (as opposed to EGS in pre-facelift models). The software later will ask for some numbers to process in the EGS (although you selected GKE), but this is normal. Read very carefully the attached pdf, because it spills out the exact numbers that have to be entered for a 4.4 or a 4.8 model. The pdf is SIB 24-01-06

Attachment 66167
Above my 1-2 hard shift fix.
I know about that rubber seal, the thing is that lots of the time the battery can get low voltage, corrupting the car's modules. And sometime you cannot even connect to it. I just re-flashed the latest tranny software and this fixed the annoying 1-2 jerk when cold. I would try this first, before dropping the mechatronic unit. If this doesn't do it, then it could be the bridge seal, or low ATF, or clogged filter. Fmugur can chime in, he was there.

0.02
__________________
Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.
Reply With Quote
  #23  
Old 04-23-2015, 07:20 PM
kvc kvc is offline
Member
 
Join Date: Mar 2015
Location: Western Australia
Posts: 373
kvc is on a distinguished road
Quote:
Originally Posted by Doru View Post
Above my 1-2 hard shift fix.
I know about that rubber seal, the thing is that lots of the time the battery can get low voltage, corrupting the car's modules. And sometime you cannot even connect to it. I just re-flashed the latest tranny software and this fixed the annoying 1-2 jerk when cold. I would try this first, before dropping the mechatronic unit. If this doesn't do it, then it could be the bridge seal, or low ATF, or clogged filter. Fmugur can chime in, he was there.

0.02
Please explain for someone with little knowledge about the subject, what's involved in 're-flashing' the latest tranny software? I have a similar problem (harsh change from 1st to 2nd gear when cold). PO had the alternator changed over a few months prior to me buying the car, so perhaps this is the cause. I've already serviced the trans, with new filter, ATF etc bu this harsh change persists. This symptom is only prevalent when the trans is cold. Once warm, the changes are smooth.
What tool do I need to re-flash, how difficult etc? TIA.
Reply With Quote
  #24  
Old 04-23-2015, 08:00 PM
Member
 
Join Date: Sep 2014
Location: California
Posts: 309
Johnny_5 is on a distinguished road
Quote:
Originally Posted by Doru View Post
Above my 1-2 hard shift fix.
I know about that rubber seal, the thing is that lots of the time the battery can get low voltage, corrupting the car's modules. And sometime you cannot even connect to it. I just re-flashed the latest tranny software and this fixed the annoying 1-2 jerk when cold. I would try this first, before dropping the mechatronic unit. If this doesn't do it, then it could be the bridge seal, or low ATF, or clogged filter. Fmugur can chime in, he was there.

0.02
Doru...did you do the reflash yourself? If so what did you use to do it?
__________________
2004 X5 4.4i 202k on odometer
Reply With Quote
  #25  
Old 04-24-2015, 10:13 AM
Member
 
Join Date: Sep 2011
Location: Calgary
Posts: 747
Doru is on a distinguished road
I used Progman SSS. I have the Romanian software (GT1, INPA, Progman etc) and has the latest & greatest. The pdf I linked above contains the details on how to re flash.

If you don't know how to do it, here is a vid how to re program the ABS module (for the programming part, it starts at 4.50 minutes or so). Obviously one has to follow the pdf - the vid is just an example, and you need to pick the correct module (GKE/EGS when prompted for it).
And you need patience, because there are moments when you might think nothing happens, maybe the computer crashed, etc. but actually it's working, but it takes time. A good battery charger is mandatory.

https://www.youtube.com/watch?featur...&v=vx8FwUCkHys
__________________
Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.
Reply With Quote
  #26  
Old 04-24-2015, 10:21 AM
Member
 
Join Date: Sep 2011
Location: Calgary
Posts: 747
Doru is on a distinguished road
I also have my hunches that BMW introduced after 2006 or so the "battery registration" feature in order to prevent these glitches when the battery gets low. Prior to the "battery registration" there were lots of instances reported where the car would go in limp mode (and I refer to numerous BMW model lineups from sedans to coupes to SAV), or would exhibit other weird behavior, which would be solved with a good or recharged battery. That "battery registration" feature is probably another module or similar that keeps tabs on the voltage of the battery and in certain situations directs the flow of power to the unit/module that needs it most in order to prevent these glitches that can be dangerous in certain situations (think of merging on a Hi-way, and you get the "trans- failsafe" message).
But I can be wrong.
__________________
Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.
Reply With Quote
  #27  
Old 04-24-2015, 12:32 PM
Member
 
Join Date: Sep 2011
Location: Calgary
Posts: 747
Doru is on a distinguished road
here is the pdf on how to change the mechatronic & seals. However, the mechatronic unit usually is fine, the GKE module might lose it's memory and/or get corrupted due to low voltage. I think it was believed the mechatronic was going bad, and in the early stages of fixing the 1-2 hard shift, BMW & ZF might have thought changing the mechatronic unit will solve the issue (which it does, until the battery voltage drops again), but you're out about 1600$ to do that. The pdf is helpful if the square seals are bust and need replacing, which like every rubber they might.

6 Speed Mechatronic Replacement.pdf
__________________
Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.
Reply With Quote
  #28  
Old 08-27-2015, 10:26 PM
Member
 
Join Date: Dec 2010
Location: MN
Posts: 214
Junkycosmos is on a distinguished road
PropellerHead,
Thank you! I wanted to post a quick note back. Using a bunch of what you posted as motivation and tips my X (2005 x4.8is) is shifting better than I ever knew it could. While I would not have outright said before this that I had a broken transmission but it was clearly not performing as designed and had started to lag more in recent months.

No more kicking when shifting from 1st to 2nd. No more hanging in 2nd and 3rd and overall more consistent shifting overall. As a result my driving has is now more spirited. Not crazy but enough so that I'm also shocked for my mileage to have also increased. Yes, no kidding 5% or so. Clearly it was hanging in the lower gears more than I realized.

I have had good success with recent steps I took of swapping trans fluid and the parts plastic sealing parts between valve body and trans. All of the plastic tubes were shorter from age 1-2mm. The theory here is high pressure fluid leaks between valve body and trans due to these $20 in plastic parts shrinking. No special tools other than to drop trans pan. Valve body unbolts and drops even easier.

My Medtronic seal had a very slight leak too. I also think my overall fluid was low too as it took 7 liters to refill first time and second fluid swap only took 5.5 liters.

Trans oil change 7 liters life guard6 (bav auto)

dropped pan,
new filter (BMW parts counter)
dropped valve body
New metatronic seal (round electrics plug seal)
valve body seal , 4 tubes within trans (BMW)
took 2 liters into pan with engine off,
took 5 more with engine running, gear shift and 42C
Reset trans adaptations
Trans shifting much better now

Drove a 2 thousand miles and then for good measure changed trans filter and pan gasket 2nd time. Added fluid Zf lifeguard 6, took 5.5 liters at temp 40c
Trans resets adaptations again due to new fluid. If I were recommending to someone else I would not recommend 2nd pan drop but I would do 2nd fluid change.

Drives much better now. Shifting smooth and quick like I expect from a 2.5 ton sport truck.


Here are some other research links I complied looking into this.


Zf site directions
http://www.zf.com/na/content/media/u...28_Catalog.pdf

Zf lifeguard 6 fluid per zf site
Amazon $23

Bav auto $23 / liter
Welcome to bavauto.com | ZF Lifeguard 6 fluid - for 6-speed automatic transmissions

More on our trans
Everything about your ZF 6HP26 transmission issues | BMW Logic7 site

6hp26 tear down and history
Post 6 here shows the 5 seals (1 rectangle and 4 round tubes) valve body and trans plates
ZF 6HP26 Teardown
__________________
2003 E39 530i
1992 MX5
2005 E53 x5 4.8is (sold)
1990 K75S (sold)
Reply With Quote
  #29  
Old 08-27-2015, 10:55 PM
Member
 
Join Date: Dec 2010
Location: MN
Posts: 214
Junkycosmos is on a distinguished road
Oh I forgot to mention one part. I did try the program update you and Duro noted
Transmission software update
http://www.xoutpost.com/attachments/...c-software.pdf

But I still have to sort out what is up with the version numbers as my 4.8is had the program numbers for the 4.4 in it. Mine had 7564917 on it / sss progman did updated to same 7464917. This was probably good to clear out any corruption too.
similar to this video
https://www.youtube.com/watch?v=7VZSlrbNo9Q

Still puzzled that the part number i have does not match 4.8is transmision (post #7)
http://www.xoutpost.com/bmw-sav-foru...-one-them.html

I have been thinking to check what programman version I have and then maybe entering in the version number manually instead of auto select.
__________________
2003 E39 530i
1992 MX5
2005 E53 x5 4.8is (sold)
1990 K75S (sold)
Reply With Quote
  #30  
Old 08-30-2015, 11:20 PM
Member
 
Join Date: Apr 2009
Location: Calgary
Posts: 1,048
fmugur is on a distinguished road
Great to hear guys. I also have the 1-2 hard shift when cold on the 4.4 and on the 4.8 not too bad but it's there. I will change the gaskets and I hope that fixes it. I added the part numbers. As far as I could find, other than the four tubes all are BMW parts.

new filter BMW part:
24117543550

new oil pan gasket, BMW part:
24117543484

New metatronic seal (round electrics plug seal):
24347588725

valve body seal - BMW part number:
24347588727

4 tubes within trans (BMW) - from the ZF catalog you posted. I believe these cannot be purchased from BMW, only from the ZF transmission parts supplier?
2x BMW 24107519314 ZF 01.050
BMW 24107519315 ZF 01.060,
BMW 24107520715 ZF 01.064


Note: I found and added the BMW part numbers for the ZF SEALING SLEEVE
__________________

4.8is 2004 imola red
4.8is 2005 Black on Black - DINAN/2 sold
4.4 2004 X5
2003 330xi
2008 328xi - sold
4.4 2000 X5 - sold

Last edited by fmugur; 08-30-2015 at 11:31 PM.
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 05:12 AM.
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.