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E39 abs control unit fault. 2002 520i


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29 replies to this topic

#1 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 10 August 2011 - 08:55 PM

In need of a bit of guidance from those in the know here.
Had the dreaded triangle,abs and brake orange warning lights illuminated last week so took them to my local indy for a diagnostic.
He read the codes and replaced the pressure switch. Lights still lit
He then replaced the brake light switch. Lights still lit.
After further investigation he suspects the abs control unit is on the way out.
So..£250 lighter, thoroughly pissed off and no nearer a solution.
Anyone know of a second hand Abs control unit with dsc available?

#2 jag530isport

jag530isport
  • LocationBirmingham
  • Occupation:Systems Analyst
  • Current Car:Estoril Blue BMW X5 4.8is 2005 & Grey BMW E46 330ci Sport Convertible

Posted 10 August 2011 - 10:03 PM

I had the same issue with my E39. I would give BBA Raman a call as they might be able to fix your existing module, if no they do both recon and new module. It's a good turn around too.


---
I am here: http://maps.google.c...43399,-1.847378

E46 Grey 2003 330ci Sport 6sp Manual

E53 Estoril Blue 2005 X5 4.8is, Comms Pack

E39 Sterling Grey 2002 540i Sport 6sp Manual, Comms Pack Sold

E39 Imola Red 2001 530ia Sport, Comms Pack, M5 Mirrors Sold
E34 Avus Blue 1994 525i Sport, Manual, Lotus White Leather Sold
E36 Silver 1994 318is, Mtec Body Kit and M3 Alloys Sold


#3 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 11 August 2011 - 07:28 AM

Ok thanks. I'll give them a try.

#4 danny_boy

danny_boy

Posted 11 August 2011 - 12:36 PM

I sorted mine last month - ended up buying one on eBay (matching part number) and got it coded. £150 plus delivery.

Dan

#5 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 11 August 2011 - 12:53 PM

Thanks for the tips lads, much appreciated.

#6 WNeill

WNeill
  • LocationFife
  • Occupation:Whisky Industry
  • Current Car:BMW Z4 2.2 SE Roadster ('54)

Posted 11 August 2011 - 04:41 PM

Number one thing to do is get the codes read. It could be a number of things other than a faulty ABS unit. When I hd similar probem last yeat, it turnedd out to be the steering angle sensor, after I recalibrated it using GT1 it has never troubled me since, so get a diagnostic done, maybe a member ives near you who has good diag software?

Sent from my X10i using Tapatalk

ee899ea9-c9e5-41c7-bae6-f74acd57a8bb.jpg
BMW Z4 SE Roadster ('54) - Titan Silver 

Previous BMWs;

BMW 645CI Coupe ('54) - Matte Black (2013)

BMW 325i SE Coupe ('56) - Titan Silver (12-13)
BMW 530iA Sport ('01) - Titan Silver (10-12)
BMW 520i SE ('99) - Glacier Green (08-10)


#7 RafflesNH

RafflesNH
  • LocationMitcham, Surrey CR4

Posted 11 August 2011 - 06:37 PM

Number one thing to do is get the codes read.
8<


I think you'll find he already did that. ;-)
Posted Image
2002 520i A SE Touring Titanium Silver 84,750 miles @ bmw5 membership

#8 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 11 August 2011 - 07:41 PM

Yep, codes read, sensors replaced,money spent.
Trouble is Control units with dsc are very hard to come by. E-mailed BBA Reman.. no reply yet. Gonna try ringing them tomorrow. Tried Parts Gateway , no luck.
There's a few new ones about for around £350 that'll need coding but hoping to find a used one or get mine fixed.

#9 WNeill

WNeill
  • LocationFife
  • Occupation:Whisky Industry
  • Current Car:BMW Z4 2.2 SE Roadster ('54)

Posted 11 August 2011 - 07:48 PM

Sorry, Im reading this on my mobile and Im also daft :-D
Im always suspicious when codes are read and they 'diagnose' expensive fixes/replacements that dont solve the issue.
Good luck anyway

Sent from my X10i using Tapatalk

ee899ea9-c9e5-41c7-bae6-f74acd57a8bb.jpg
BMW Z4 SE Roadster ('54) - Titan Silver 

Previous BMWs;

BMW 645CI Coupe ('54) - Matte Black (2013)

BMW 325i SE Coupe ('56) - Titan Silver (12-13)
BMW 530iA Sport ('01) - Titan Silver (10-12)
BMW 520i SE ('99) - Glacier Green (08-10)


#10 rob-the-viking

rob-the-viking
  • LocationCambs

Posted 13 August 2011 - 07:23 AM

I agree with willie mate, 250 down and no closer to being fixed? Call BBA mate and send them your ECU, very common fault on the e39. If they find no fault, it's only a £40 chard for the testing I believe.
Posted Image

55,573

#11 Machinehead

Machinehead
  • LocationWiltshire
  • Occupation:Pensions SSAS Technical Specialist
  • Current Car:E39 528iA Touring

Posted 14 August 2011 - 09:50 AM

if the units at fault it may give all sorts of false code - mine did but I had a clue that it only did it when hot; when cold it was ok. BBA Reman fixed it for <£150 and only took a few days. Faced with a 2nd hand one for simular money off ebay then I'd rather get the original one fixed and you get 2-year warranty iirc which you wont form an ebay seller....
Because life's too short not to............

Silver '99 E39 528i SE Auto Touring
previously Diamond Black '93 E34 525i Auto Saloon
and Honda Fireblade for some fun!

Posted Image

#12 Hutch 530i Sport

Hutch 530i Sport
  • LocationLondon/Kent
  • Current Car:E39 530i Sport

Posted 14 August 2011 - 12:50 PM

Is this fault with the abs ecu an MOT failure ?

Edited by Hutch 530i Sport, 14 August 2011 - 12:51 PM.


#13 Machinehead

Machinehead
  • LocationWiltshire
  • Occupation:Pensions SSAS Technical Specialist
  • Current Car:E39 528iA Touring

Posted 14 August 2011 - 02:48 PM

Is this fault with the abs ecu an MOT failure ?


if the light is on then I beleive its an MOT failure
Because life's too short not to............

Silver '99 E39 528i SE Auto Touring
previously Diamond Black '93 E34 525i Auto Saloon
and Honda Fireblade for some fun!

Posted Image

#14 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 14 August 2011 - 10:08 PM

Quick update..
Decided to go the repair route with ECU testing ltd. Quoted me £150 & vat for dsc type. No fee if not repairable, Two year warranty if it is. All packed up and ready to post in the morning.
Fingers crossed. Thanks for the advice chaps.

#15 Machinehead

Machinehead
  • LocationWiltshire
  • Occupation:Pensions SSAS Technical Specialist
  • Current Car:E39 528iA Touring

Posted 14 August 2011 - 10:18 PM

that's the same a BBA Reman - no fix, no fee, just the postage.
Because life's too short not to............

Silver '99 E39 528i SE Auto Touring
previously Diamond Black '93 E34 525i Auto Saloon
and Honda Fireblade for some fun!

Posted Image

#16 jackie_black

jackie_black
  • LocationNewcastle Upon Tyne
  • Current Car:545 SE With 18s

Posted 15 August 2011 - 09:32 PM


if the light is on then I beleive its an MOT failure


So is my E39 going to fail its mot in 2 weeks as it has both traction control and ABS lights lit up?

I think its a sensor as it happened after my discs and pads were replaced and up until today the cruise control was working fine. More money into the money pit!!

#17 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 16 August 2011 - 03:15 PM

It certainly looks that way...

#18 jackie_black

jackie_black
  • LocationNewcastle Upon Tyne
  • Current Car:545 SE With 18s

Posted 16 August 2011 - 05:46 PM

Could the failure of my ABS and traction control also be due to my recent failing alternator/battery problem. The ABS and traction lights were intermittent for months before they remained lit and according to haynes low voltages can cause the system to fail and hence the car disables it. Fingers crossed for a cheap fix!!

#19 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 19 August 2011 - 11:08 AM

Quick update.. ECU Testing say module is beyond repair, now looking for a used one....*sigh*

#20 rob-the-viking

rob-the-viking
  • LocationCambs

Posted 19 August 2011 - 12:06 PM

Bad luck mate, check the breakers section on here to see in anyone has the right part number for you.
Posted Image

55,573

#21 Machinehead

Machinehead
  • LocationWiltshire
  • Occupation:Pensions SSAS Technical Specialist
  • Current Car:E39 528iA Touring

Posted 19 August 2011 - 12:28 PM

off to the breakers - take the p/n of your with you and find one the same. some say the part needs coding but some seem to get away without any such trouble
Because life's too short not to............

Silver '99 E39 528i SE Auto Touring
previously Diamond Black '93 E34 525i Auto Saloon
and Honda Fireblade for some fun!

Posted Image

#22 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 19 August 2011 - 03:25 PM

After much deliberation and searching decided to go for a new one from Quarry motors, Bmw specialist and breakers, for £360. Dealer wanted over a grand.
Will have to get it coded though.
Given that they are prone to breaking, decided against a used one.
Apparently it was the pre charge pump circuit that was the problem, Bloody things.

#23 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 20 August 2011 - 02:20 PM

Excellent service from Quarry, new unit arrived this morning, only ordered it 1pm yesterday.
Will I be able to fit it myself then drive down to indy on Monday for coding or leave it and let them fit it and code it?

#24 Machinehead

Machinehead
  • LocationWiltshire
  • Occupation:Pensions SSAS Technical Specialist
  • Current Car:E39 528iA Touring

Posted 20 August 2011 - 02:50 PM

if its just the module that yes you can fit it and it should work - I think the coding issue is so other modules can 'talk' to the abs module but not 100% sure why the coding is there
Because life's too short not to............

Silver '99 E39 528i SE Auto Touring
previously Diamond Black '93 E34 525i Auto Saloon
and Honda Fireblade for some fun!

Posted Image

#25 Clavurion

Clavurion
  • LocationFinland

Posted 20 August 2011 - 03:26 PM

ABS should work straight after the new module is installed. ASC/DSC will not work properly before it's coded. The coding tells the unit for example which engine the car has so it can work properly.
E39 530dA M-Sport

#26 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 20 August 2011 - 03:30 PM

Thanks for the help. I'll pop it in now.

#27 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 22 August 2011 - 03:08 PM

Well, fitted and coded now all working. Just got back from indys. a whopping £110 for coding, nearly fainted! Not too impressed or does that sound about right ?

#28 danny_boy

danny_boy

Posted 22 August 2011 - 07:21 PM

I had mine coded at a BMW specialist for £30 including VAT about a month ago.

I think you paid way over the odds mate.

#29 Clavurion

Clavurion
  • LocationFinland

Posted 22 August 2011 - 07:28 PM

Well, fitted and coded now all working. Just got back from indys. a whopping £110 for coding, nearly fainted! Not too impressed or does that sound about right ?

Jesus! :huh: Indy with higher price than dealer? With NCS this job takes about 10 sec including a coffee break.
E39 530dA M-Sport

#30 Gonzogio

Gonzogio
  • LocationN.Wales
  • Occupation:Carpenter/ Joiner
  • Current Car:520i es se

Posted 22 August 2011 - 07:49 PM

Thought so, beware Smiths BMW in N. Wales - give them a wide berth . Rip off merchants.




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