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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

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  #26  
Old 02-02-2013, 06:58 PM
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bluebee bluebee is offline
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Quote:
Originally Posted by Microflight View Post
how does the code P0500 translate to English.
It's in the picture below from my bogus smog failure from the referenced thread.
- P0500 Vehicle Speed Sensor Malfunction
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  #27  
Old 02-22-2013, 07:19 PM
Microflight Microflight is offline
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Trifecta - Brake Pressure Sensor 81 error code - not Sensor but Module

2003 E 39 After a previous post I made starting with an 81 error code which would have been the brake pressure sensor, I back probed the sensor and saw that it was giving credible values. I then concluded ( guessed) that it was the module.

A BMW tech friend identified a rebuilder that he used and liked - Module Master in of all places Moscow Idaho (actually near Spokane Washington) phone 888-892-0764 and on the web.

They quoted 300 for the Bosch 5.7 module. Their terms are 5 day turn. If the Module has no error on the inbound check, there is only the shipping charge. If the module is unrepairable, for $75 additional they will send you a good unit - remembering that you will have to reprogram the VIN into it so there would be that additional charge when you got it back. Module Master provides a 5 year warranty.

I sent the module, they repaired and returned it to me. I installed it and the ABS, DSC and Brake warning lights went out on start - normal. One day later aver a number of short trips the service engine soon light also went out. NERVANA

The report from Module Master is as follows: "Repaired damage to power return circuit and 8 line sensor driver section to restore proper module operation. Installed high current shunt to protect power return circuit from future failure. Unit now powers up and executes self test and functions perfectly on test fixture without any error codes."

I conclude that this module was unerdesigned and while surviving for a number of years was bound to fail. Given the number of failures and the common knowledge among the Indy's I know that they immediately are aware and have experienced the problem with the module

As for error codes, one has to be careful in assessing a fault code that is based upon a network communication like the ABS module. I am certain from the DME and ABS module prospective, the error is that it is not receiving the communication from the Brake Pressur Sensor, but once you verify the brake pressure sensor is sending signal, the culprit are the wires or the module as was the case here in the module.

While I could have opened the module and attempted the repair, I sense that it would be sublect to failure again without the shunt. $300 is a lot - peace of mind is priceless
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  #28  
Old 03-17-2013, 10:40 PM
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bluebee bluebee is offline
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Quote:
Originally Posted by Microflight View Post
81 error code ... I back probed the sensor and saw that it was giving credible values
The anecdotal evidence is overwhelming that the 81 code is bogus (most of the time). In fact, I can't remember a single incidence of the 81 being real (but I am no expert and not everyone is on the forums). Point is that the 81 error code 'should' be further tested before believing it.

Quote:
Originally Posted by Microflight View Post
A BMW tech friend identified a rebuilder that he used and liked
See also:
- What are all known options when your ABS control module is bad (1)

Quote:
Originally Posted by Microflight View Post
As for error codes, one has to be careful in assessing a fault code that is based upon a network communication like the ABS module.
Bill (540iman) would be proud of you! You're one of the few who realize the inability to get isolation readings without actually isolating the components under test.
- Explanations by 540iman as to why the fancy diagnostic tools very often (extremely often, like almost all the time) fail to properly diagnose the trifecta or bifecta (1) (2) (3) (4) (5) (6)

Quote:
Originally Posted by Microflight View Post
I sent the module, they repaired and returned it to me.
Thanks for the update. I will append it to the canonical ABS trifecta thread:
- How to diagnose the BMW amber ABS BRAKE DSC/ASC trifecta or bifecta (1)
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Last edited by bluebee; 03-18-2013 at 01:28 PM.
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  #29  
Old 03-18-2013, 01:27 PM
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bluebee bluebee is offline
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See also this thread today, by Poolman, which discusses how to properly REMOVE the brake pressure sensor:
- Brake pressure sensor
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  #30  
Old 10-14-2013, 01:09 PM
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bluebee bluebee is offline
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This post by poolman in a thread today shows why we can't trust the mechanics when they tell us the Brake Pressure Sensor is bad, simply because they're sometimes reading what the broken computer is telling the diagnostic port:
-> E39 (1997 - 2003) > ABS sensor
Quote:
Originally Posted by poolman View Post
My indy told me all of my sensors were OK and that my problem was brake pressure issues,,which became the rebuild of my ABS unit
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  #31  
Old 12-29-2013, 02:11 PM
jkeysatx jkeysatx is offline
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e39 error 105?

My ABS/DSC warning lights came on, had the code read and replaced the right front wheel sensor. While I was at it I replaced the front brake pads. Drove the car and the waring lights came back on...the original code for the wheel sensor now is clear...and I have the brake presure error code 105..so now I'm not sure if the original problem was real and could use some advice...
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  #32  
Old 12-29-2013, 04:23 PM
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Quote:
Originally Posted by jkeysatx View Post
My ABS/DSC warning lights came on, had the code read and replaced the right front wheel sensor. While I was at it I replaced the front brake pads. Drove the car and the waring lights came back on...the original code for the wheel sensor now is clear...and I have the brake presure error code 105..so now I'm not sure if the original problem was real and could use some advice...
Other than the cooling system, and FSU, the trifecta is probably the next-most common problem on the E39.

In almost all of the trifecta/bifecta threads, the problem was either one of the sensors or the ABS control module.

So, the team here developed a test of the wheel speed sensors, and it's all documented in this huge thread. Just sit down, grab a cup of coffee, and read it and you'll solve your problem.

NOBODY to my knowledge has not solved this problem (well, there was the one guy who just wanted the error to go away so he could sell the car to some unsuspecting sap, and he wasn't able to do that without actually fixing the car - which he complained about - so he didn't) but everyone else has solved the problem with the information in this one thread....

- How to diagnose the BMW amber ABS BRAKE DSC/ASC trifecta or bifecta (1) & what are all known options when your ABS control module is bad (1)
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  #33  
Old 05-09-2014, 05:28 PM
upallnight upallnight is offline
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Quote:
Originally Posted by bluebee View Post
It's in the picture below from my bogus smog failure from the referenced thread.
- P0500 Vehicle Speed Sensor Malfunction
The failure is for the MIL or Check Engine light. If you reset the check engine light or MIL prior to taking the car in for testing and didn't have enough drive cycles (150 plus miles, plus several start and stop cycles) you fail the test. This is to prevent people from resetting the CEL or MIL about a block away from the testing site to extinguish the lights.
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  #34  
Old 05-09-2014, 11:57 PM
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bluebee bluebee is offline
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Quote:
Originally Posted by upallnight View Post
The failure is for the MIL or Check Engine light. If you reset the check engine light or MIL prior to taking the car in for testing and didn't have enough drive cycles (150 plus miles, plus several start and stop cycles) you fail the test. This is to prevent people from resetting the CEL or MIL about a block away from the testing site to extinguish the lights.
What happened, to me, was that I failed inspection due to this bogus P0500 which did NOT set the check engine light.

The bogus P0500 occurred because the ABS control module was removed for repair (I'm assuming that's what caused the P0500 since that's when it happened and it never happened again, and I didn't change anything in the interim).

The problem was that it did NOT set a fault, but, it set a PENDING fault, which caused me to fail inspection (it takes three pending faults to set the CEL).

So, my warning to others, is to check your monitors with a scanner BEFORE going for smog inspection after having removed the ABS control module.

See also:
- What's this about the P0500 setting the SES (1) & why you want to wait a week before getting a smog test after removing your ABS control module (1)
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  #35  
Old 05-10-2014, 05:31 AM
upallnight upallnight is offline
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ABS fault will not set off a CEL or MIL fault. It will set of the ABS light or brake light. Why should they even be concern with an ABS fault since it is not smog related. I can see if you were in a European country or England where cars are brought in for a MOT.
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  #36  
Old 05-10-2014, 10:22 AM
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bluebee bluebee is offline
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Quote:
Originally Posted by upallnight View Post
ABS fault will not set off a CEL or MIL fault. It will set of the ABS light or brake light. Why should they even be concern with an ABS fault since it is not smog related. I can see if you were in a European country or England where cars are brought in for a MOT.
I fully understand what you're saying, and, don't disagree that the ABS won't, in and of itself, set the CEL, but, a P0500 will set the CEL, if the pending code is seen on three successive FTC drive cycles.

However, when I inquired at the time why I was being failed for a seemingly non-emission-related pending fault code, I was told that MANY things affect emissions, including the AC, evap leaks, and, yes, speed sensors.

Now, you and I know this P0500 was a bogus pending code, and, since I hadn't checked for pending codes before paying for my smog check, I was plumb out of luck (i.e., completely out of luck).

I did call the smog check referee at the time, but, he told me the same thing.

Anyway, the fact is clear that I failed due to a pending P0500, and, that I passed without changing anything, two weeks later, simply by driving the vehicle.
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Last edited by bluebee; 05-12-2014 at 03:21 PM.
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  #37  
Old 10-05-2014, 10:05 PM
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Here's another case of a false reading today:
> E39 (1997 - 2003) > DSC, Brakes, an ABS
Quote:
Originally Posted by fortunateson View Post
We'll I have been having the "trifecta" issue for the last month. I an indie read the codes and came up with "line pressure sensor". I was going to send the ABS sensor to BBA for a repair but held off because of the code reading. To be sure I went to another indie and they confirmed it was the sensor. Got the part and installed it. The three lights went off.... For about twenty seconds! Goodbye to about $200. I can't really complain to either indie since they read the codes for free. I guess I'll have to send the ABS off now anyway. Pissed off to say the least!
See also:
- How to physically test & repair the Bosch ABS control module (1) & how to diagnose the BMW amber ABS BRAKE DSC/ASC trifecta or bifecta (1) & what are all known options when your ABS control module is bad (1) & why you want to only buy oem wheel speed sensors (1) & how to remove and replace the four BMW E39 ABS related WSS wheel speed sensors (1) & which wss innervates the speedometer (1) & explanations by 540iman as to why the fancy diagnostic tools always fail to properly diagnose the trifecta or bifecta (1) & where to get the fancy schmancy diagnostic tools for free once you're aware of their limitations (1) & why it's probably not the ABS hydraulic pump failing (1) & how to properly test the BPS brake pressure sensor (1) & how to properly test and replace the steering angle sensor (1) & Quick99Si's explanation of why the 10-minute wheel speed sensor diode-action quick test doesn't always work, especially on non-OEM wheel speed sensors (1) & what's this about the P0500 setting the SES (1) & why you want to wait a week before getting a smog test after removing your ABS control module (1) &, if you really want to try, how to attempt to disable the ABS/DSC but keep the speedometer and mpg cluster readouts (1)
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  #38  
Old 10-21-2014, 12:24 AM
Walopower Walopower is offline
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Quote:
Originally Posted by bluebee View Post
In post #522 of the canonical ABS trifecta thread, I've added more detailed pictures of the connectors and I've improved the pinout annotation at the ABS harness connector with respect to the diagram above.

I have e39 525iA 2001.
Got codes:
88 Vorlade Pumpe.
92 Druck Sensor (Plausibilitaet Vorlade Pumpe).
First was DSC+ABS light, then only DSC light.
INPA logs wheel sensors data correct.
Preload pump runs smootly with manually 12V, but activation from INPA I got it run once when I try about 10 times.
I measured Preload pump wires, 12+ on Black (groud), if I activate preload pump from INPA, it goes to GND.
Nothing in Red. I have find it from WDS where it should come.
I tested pressure sensor, but, when I measure Blue (center) wire without connected, it show 5V like violet wire, In connected it show varying voltage between 0.46V-3.0XV and grey wire (should be varying voltage) shows ground, not like in above example!
Before yesterday it works fine.
Where is problem, in ABS control box maybe?
Update: I ordered new DSC box, I can code it myself. In Europe ECU repair services cost more than USA. Let's see in next week that if it was the problem.
Then I will try to fix old box if it is reason of the problem.

(Already soldered).

Whole story:

I bought a new ABS/DSC box /Bosch 5.7 "1265950002" (same code than old one).
Then I tried to code it with NCS Expert following this help:
http://www.bimmerforums.com/forum/sh...e-w-NCS-Expert
I can read vehicle data (ZCS/FA f) from all ECUS. But then it not show DSC ECU, only ASC5 ECU (witch should not be there), but I have DSC!

Modules appears:
ABG,ASC5,EWS,GM3,IHKR,KMB,LCM;RAD,SM

I tried with old ABS box and it make same.
Then I tried code ASC5 module, it was wrong and got I got ASC5 codierindex=h10 error.
New ABS identified in INPA and I already calibrated steering wheel senser.
Old daten files or where is problem?
But I can't find newer than v.41.
I tried INPA version 4.4.7/5.0.2/6.5.2.
Do I have to install EasyDIS?

First one is old ECU and second new one.
---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW CI DI BI/VI Date Odometer VIN ADFG Algorithm
---------------------------------------------------------------------------------------------------------------------------
ABS -> 6.757.595 55 03 10 16 3C 06/01 - - - DSC5.7
ABS -> 6.769.537 55 03 10 16 3C 07/14 - - - DSC5.7

I used BMW decoder, decoded old FA/SA, activated DSC option, encoded, one number changed. Started NCS expert, readed ZCS, then entered ZCS manually, and changed one 0->9 to FA/SA number and after that, DSC module was in coding list! Then I coded it and warning lights and ABS error code was gone!
Only strange thing when I opened INPA ans DSC page, ABS+DSC light starts illuminating, no error codes, I need to read errors from other modules too.
Maybe I have to code all modules, but I am little scary to do that, because everything works now.

Edit:
I found ZCS label from trunk, it was in Nokia HIFI Bass unit. But in that is also number 03.01.06 (europe format 2006?), but there is also correct VIN, so SA should also be right
When I bought this car, there was same miscodings, I think somebody is coded it wrong in early days.
That SA code in the labes is same than was in ZCS. Very strange, no DSC, Xenons, Automatic climate, what are original equipments for sure.
I added DCS, Xenons, board computer (0550, assumed that this is low as should?), automatic climate to SA code with BMW decoder. Changed that SA to those three modules with FA_write job.
OLD modules in coding list:
ABG,ASC5,EWS,GM3,IHKR,KMB,LCM;RAD,SM
NOW:
ABG,DSC,EWS,GM3,IHKA,KMB,LCM,LWR,LWS,RAD,SM
Should LWS be here? it is controlled by DSC? (I checked also steering wheel sensor to SA code).
Then I code whole car.
Got LWR job-not-found error (maybe lights should on when prosessing), coded it independet, was ok.
Airbag light starts illuminate, it was passanger belt switch. I started BMWscanner, coded passanger belt switch current monitoring ON, airbag light goes off.
Then I use BMW Scanner to clear errors and code lights, Alarm etc. behavior to my preference.
Now there is no errors, everything works!

So it was brake pressure sensor and pump error codes, but it was a module...
I have read that sensor or pump failures are uncommon reason to errors.

Last edited by Walopower; 10-30-2014 at 01:26 PM.
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  #39  
Old 10-21-2014, 08:45 AM
Crutzy Crutzy is offline
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Quote:
Originally Posted by Walopower View Post
in ABS control box maybe?
You asked the same question in the tirfecta thread.
Forget about the codes.
When the computer is bad, the computer spits out bad codes.
Everyone gets them. They are meaningless (probably).

Your problem is almost certainly the computer, so just open it up, remove the goop around the big wire, and reattach the big wire with conductive epoxy. Or just pay someone $100 to do that for you.

First double check your wheel speed sensors with a digital multimeter, but after that, reattach that wire and you're good to go.
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  #40  
Old 10-23-2014, 10:52 PM
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Yet another brake pressure sensor was replaced, to no avail ...
> E39 (1997 - 2003) > 2002 E39 ASC BRAKE ABS lights on => Diagnostic Procedure & Parts Location
Quote:
Originally Posted by fortunateson View Post
Well the sensors were not tested. The initial code was brake line pressure sensor, done by two independent mechanics, so that sensor was replaced ($200). Read up on the issue and sent ABS unit to BBA , re-installed, trifecta gone! Cleared the SAS code and trifecta back as I stated. Can someone lead me to the promised land?
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