Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) 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 08-29-2017, 10:07 AM
Member
 
Join Date: Jul 2017
Location: EU
Posts: 32
thesamiest is on a distinguished road
My car is going nuts

I’ve had similiar trouble on the 08 4.8i before and checked the wiring harness, tested another thorttle body, chnaged the gas paddle and it ended up being the battery. However now the battery is holding charge fine. Here are the nuts symptoms: Car started going into limp mode but no errors, simply i mashed the paddle and the car would not accelerate, had to turn it on/off and it would be a while till the car went into limp mode, still no errors. This sometiems did and sometimes didn’t happen. These days it went in limp mode and i got the 4x4 malfunction and various warnings, cruise control malfunction etc. Today the really nuts behavior re-accured: the car started bucking forward, without me giving it gas, it stalled, the rpms kept going up and down and i could barely drive it. Left it sit and the car started back up no issues, last time i checked here are the codes: 2CF8 throttle potentiometer, 2CF9 throttle potentiometer 2, 2CFA throttle potentiometer 3, 2D32 differential pressure sensor plausibilty error. These come up when the engine malfunction light comes up. It probably had more codes but they got erased as the car has been from shop to shop and they’ve got no clues including the BMW dealer. They’re advising i try changing the throttle body. Any ideas ?


Here is a video of it going into limp mode without any warning, and after a turn off/on: https://youtu.be/DLWsDDoCulg

Last edited by thesamiest; 08-29-2017 at 11:52 AM. Reason: Added a video
Reply With Quote

Sponsored Links

  #2  
Old 08-29-2017, 12:03 PM
BGM's Avatar
BGM BGM is offline
Member
 
Join Date: Jul 2007
Location: Chicago, IL
Posts: 1,830
BGM is on a distinguished road
Just a guess but it might be the DME unit (the brains of the engine--controls every calculation in the engine). I had mine replaced luckily in April 2016 (there is an 8 year warranty on them from BMW). The failure rate on those is really, really low though--like 1 car in 300 they go bad.
__________________
2008 X5 4.8
Jet Black/Black Nevada/Dark Burl Walnut
Adaptive Drive
Premium Pack
Tech Pack
Climate Pack
Sport Pack
20" Wheel Option
Premium Sound
Sirius Satellite
Rear DVD Entertainment
Multi-Contour Seats
Comfort Access
3rd Row Seat
Heated Front Seats
Running Boards
3M VentureShield Paint Protection Film
Reply With Quote
  #3  
Old 08-29-2017, 01:18 PM
Member
 
Join Date: Jul 2017
Location: EU
Posts: 32
thesamiest is on a distinguished road
Quote:
Originally Posted by BGM View Post
Just a guess but it might be the DME unit (the brains of the engine--controls every calculation in the engine). I had mine replaced luckily in April 2016 (there is an 8 year warranty on them from BMW). The failure rate on those is really, really low though--like 1 car in 300 they go bad.

Thanks for the suggestion. I would not doubt that this isn't the 1 in the 300, i will have to check. Do you know where the DME is located? Why did you have yours replaced?

Last edited by thesamiest; 08-29-2017 at 01:40 PM.
Reply With Quote
  #4  
Old 08-29-2017, 03:17 PM
BGM's Avatar
BGM BGM is offline
Member
 
Join Date: Jul 2007
Location: Chicago, IL
Posts: 1,830
BGM is on a distinguished road
Quote:
Originally Posted by thesamiest View Post
Thanks for the suggestion. I would not doubt that this isn't the 1 in the 300, i will have to check. Do you know where the DME is located? Why did you have yours replaced?
I'm not sure where it's located. My car shut down on the freeway and threw up a bunch of codes--that's all I remember specifically.
__________________
2008 X5 4.8
Jet Black/Black Nevada/Dark Burl Walnut
Adaptive Drive
Premium Pack
Tech Pack
Climate Pack
Sport Pack
20" Wheel Option
Premium Sound
Sirius Satellite
Rear DVD Entertainment
Multi-Contour Seats
Comfort Access
3rd Row Seat
Heated Front Seats
Running Boards
3M VentureShield Paint Protection Film
Reply With Quote
  #5  
Old 08-31-2017, 02:42 AM
Member
 
Join Date: Feb 2017
Location: Los Angeles
Posts: 161
Hack213 is on a distinguished road
Same issues in the past changed a used throttle body on eBay 20$ gas pedal and throttle body harness easy check xoutpost for diy
Reply With Quote
  #6  
Old 08-31-2017, 03:11 AM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,703
ard is on a distinguished road
Quote:
Originally Posted by BGM View Post
Just a guess but it might be the DME unit (the brains of the engine--controls every calculation in the engine). I had mine replaced luckily in April 2016 (there is an 8 year warranty on them from BMW). The failure rate on those is really, really low though--like 1 car in 300 they go bad.
Really? You had THE SAME THREE CODES?????

1 in 300? That's a recall

Try one in 10,000

id be hard pressed to suggest he chase after DME issues .

OP, how do you know the battery is good? 'Holding a charge' is not a great test. If the car did the same things before, and that was a bad battery, it would seem easy to rule out a battery. Like 200 euros easy...
Reply With Quote
  #7  
Old 08-31-2017, 06:02 AM
Member
 
Join Date: Jul 2017
Location: EU
Posts: 32
thesamiest is on a distinguished road
Quote:
Originally Posted by Hack213 View Post
Same issues in the past changed a used throttle body on eBay 20$ gas pedal and throttle body harness easy check xoutpost for diy
Just changed the throttle body again yesterday, same issue however it did not go erratic, but that happens only sometimes after going into limp mode and the car kept throwing the same errors. The harness they're calming is not the issue, but i'll have to check that again.
Reply With Quote
  #8  
Old 08-31-2017, 06:13 AM
Member
 
Join Date: Jul 2017
Location: EU
Posts: 32
thesamiest is on a distinguished road
Quote:
Originally Posted by ard View Post
Really? You had THE SAME THREE CODES?????

1 in 300? That's a recall

Try one in 10,000

id be hard pressed to suggest he chase after DME issues .

OP, how do you know the battery is good? 'Holding a charge' is not a great test. If the car did the same things before, and that was a bad battery, it would seem easy to rule out a battery. Like 200 euros easy...
Well the first time the battery voltage would drop to 9 volts when starting the car. Why i'm sort of ruling the battery out is because it's been changed about a month ago and the issue was gone after that. I find that very strange that the same errors went away for over an entire month, and i drove the car everyday.
Reply With Quote
  #9  
Old 08-31-2017, 02:17 PM
Member
 
Join Date: Jul 2015
Location: Vancouver, BC
Posts: 201
the_ulf is on a distinguished road
Quote:
Originally Posted by thesamiest View Post
Well the first time the battery voltage would drop to 9 volts when starting the car.
9V sounds a bit low but don't forget your starter motor draws *a lot* of current, which will lead to a temporary voltage drop.
__________________
discs 'n drums 'n body roll
Reply With Quote
  #10  
Old 08-31-2017, 02:31 PM
BGM's Avatar
BGM BGM is offline
Member
 
Join Date: Jul 2007
Location: Chicago, IL
Posts: 1,830
BGM is on a distinguished road
Quote:
Originally Posted by ard View Post
Really? You had THE SAME THREE CODES?????

1 in 300? That's a recall

Try one in 10,000

id be hard pressed to suggest he chase after DME issues .

OP, how do you know the battery is good? 'Holding a charge' is not a great test. If the car did the same things before, and that was a bad battery, it would seem easy to rule out a battery. Like 200 euros easy...
I didn't say it was the DME--it was a suggestion as he said so many codes came up he didn't have them all written down. The 1 in 300 DMEs is all BMW model DMEs not just X5--per the dealer that had to replace it.
__________________
2008 X5 4.8
Jet Black/Black Nevada/Dark Burl Walnut
Adaptive Drive
Premium Pack
Tech Pack
Climate Pack
Sport Pack
20" Wheel Option
Premium Sound
Sirius Satellite
Rear DVD Entertainment
Multi-Contour Seats
Comfort Access
3rd Row Seat
Heated Front Seats
Running Boards
3M VentureShield Paint Protection Film
Reply With Quote
Reply

Bookmarks

Tags
e70, limp mode

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 02:00 AM.
vBulletin, Copyright 2023, 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.