BMW ICOM NEXT | BMW NBT EVO FSC Codes | BMW NBT & CIC FSC Codes | BMW Rheingold , ISTA/P, KSD, ETK remote installation | BMW STANDARD TOOLS remote installation | BMW ESYS remote installation
Go Back   BMW forum. Diagnostics, coding, programming, repair BMW vehicles. > BMWelcome > BMW diagnostics and repair

Like Tree1Likes
  • 1 Post By MrBurger
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-25-2017, 07:47 PM
Junior Member
 
Join Date: Feb 2017
Location: UK
Car: 760Li
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Default 760Li Gremlins :(

Hi
As I can't download anything (yet) I am restricted to asking for assistance from you fine people, so here goes :)

760Li 2007 UK.

Observations:
  • ISTA reports the DSC module is dead, asking to check 15WUP signal.
  • Transmission indicators black out during acceleration in P. (and when starting and sometime just idling, see videos)
  • iDrive (both front and rear) show interference (glitching) on the screen during acceleration in P.
  • Sometimes the transmission will revert from D or R back into P. (when stationary)
  • Auto Park and ACC is not available (due to aforementioned DSC issue)
  • Power module function restricted error. Closed-circuit current measurement no longer possible.

Videos:
[Only for registered users... ] (incl old INPA error at the end)
[Only for registered users... ] (iDrive/Gears/RPM issue)
[Only for registered users... ] (Start/Gears/RPM issue)

The car is now off the road, observations when accelerating in D smoothly show no transmission issue, but stamp on the throttle and the electronic issue (observed in P) causes a transmission clunk like you've been rear ended..

Work carried out recently:
(car drove ok for a few weeks after this work, but there was the odd transmission slip)
CHF11S lines were replaced due to a leak.
ATF fluid, internal seals and sleeve replaced on mechatronics.

Diagnostic Steps Taken:
Replaced SGM (combined SIM+SGM)
Replaced Power Module
Replaced IVM (or ISM to some)
Fully charged the AGM090 battery (outside the vehicle)

Any ideas?

Regards
Mr_B


Reply With Quote
  #2  
Old 02-26-2017, 04:01 PM
Junior Member
 
Join Date: Feb 2017
Location: US
Car: all
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Unplug the DSC module and see if it acts up. I believe theres a module causing problems i would start with DSC as ive had to replace many of them for issues like a persistent code about a front right wheel speed sensor even after being replaced.

Sent from my SAMSUNG-SM-G935A using Tapatalk
Reply With Quote
  #3  
Old 02-27-2017, 12:51 PM
Junior Member
 
Join Date: Feb 2017
Location: UK
Car: 760Li
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Hi
Here's a quick update..

ISTA continued to display the DSC module in red and then I thought I'd try the steering wheel button I have programmed to start/stop Auto-Park and Auto-P started perfectly..

I then re-scanned the car again and the DSC showed as green..

I then called the ECU functions of the DSC and the ECU failed to respond, again showing as red..

I pressed the steering wheel button again to start Auto-P and again it started fine..

Following that, ISTA connected to the DSC each time I tried..

The Power Module fault continues to report A148 (open circuit)

I did try another Power Module, but the same error is reported so ISTA's suggestion on replacement doesn't resolve anything sadly. I think this one is beyond computer diagnostics..

I will find the ABS/DSC and see if anything is obvious..

I suppose I need to find something common to both the IDrive and the mechatronics as it's those that are clearly indicating a fault condition..

Regards
Mr_B
Reply With Quote
  #4  
Old 02-28-2017, 03:34 AM
Junior Member
 
Join Date: Feb 2017
Location: US
Car: all
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Your gonna have to monitor live data to aee if you can catch an error on one specific module to check the module or its communication maybe faulty wire

Sent from my SAMSUNG-SM-G935A using Tapatalk
Reply With Quote
  #5  
Old 02-28-2017, 01:22 PM
Junior Member
 
Join Date: Feb 2017
Location: UK
Car: 760Li
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Default

You say I'm gonna have to monitor it, can I do that with ISTA or should I hand it over to someone who claims to know how?
(to be honest, I'd rather learn myself as at least I'd know that I'm doing it correctly and not purely just for profit)

Maybe there's a market for BMW techs that can teamviewer into PCs lol (although they couldn't reveal their identities to BMW of course)

Regards
Mr_B
Reply With Quote
  #6  
Old 02-28-2017, 07:23 PM
Junior Member
 
Join Date: Feb 2017
Location: US
Car: all
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Default

You can do so with ista/D or inpa to check live data their is many videos on youtube about working these

Sent from my SAMSUNG-SM-G935A using Tapatalk
Reply With Quote
  #7  
Old 03-02-2017, 03:05 AM
Junior Member
 
Join Date: Feb 2017
Location: UK
Car: 760Li
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Strangely enough I accessed the ECU functions menu the other day when the DSC was playing up and sure enough, that's where ISTA presents its live data/fault memory clear (module specific) functions so that's good to know.

As you say, always better to watch a video rather than practice on my car :)

Mr_B
mechanicservice6 likes this.
Reply With Quote
  #8  
Old 03-05-2017, 09:09 PM
Junior Member
 
Join Date: Feb 2017
Location: US
Car: all
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Good im glad

Sent from my SAMSUNG-SM-G935A using Tapatalk
Reply With Quote
Reply

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
E66 760LI - Help AlAlawiAlawi BMW ISIS, ICOM A+B+C, Esys 0 09-19-2014 10:31 AM


All times are GMT. The time now is 03:06 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
BMW forum: diagnostics, coding, programming.