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Audi A4 1996-2001, S4 2000-2002 (B5) abs module


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Last Post: Sep 10, 2013 7:59 AM Last Post By: mentalcase222
gatotom

Posts: 22
Registered: 03/01/05
abs module
Posted: Mar 1, 2005 1:45 PM
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I have a 98 A4 avant quattro 2.8 and my abs went out last yr. After reading about repairing the module instead of getting reamed by audi for a new unit, the repair of the module makes perfect sense.

In the bentley book it states that the module is located under the rear seat but reading mike5 comments on how to remove the module, it seems that the module is removed thru the wheel area.

Can someone kindly tell me exactly where my abs module is?? The unit number is 8EO 614 111M and the little black box under the rear seat has this number on it 748.01.01.01 measures 3"x2" 1" thick.

Thanks for your help.
gatotom
VJS

Posts: 606
Registered: 02/29/04
Re: abs module
Posted: Mar 1, 2005 4:17 PM   in response to: gatotom in response to: gatotom
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What are you reading this number "8EO 614 111M" off of? Right next to (i.e. attached) this is a plastic unit with one big connector on the side and one small connector underneath (2 wires). This is the ABS controller module. I don't know what you are reading in Bentley that made you think the ABS module is under the rear seat?

--Vic
gatotom

Posts: 22
Registered: 03/01/05
Re: abs module
Posted: Mar 1, 2005 6:07 PM   in response to: VJS in response to: VJS
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just reading from the bentley book under abs module, that is why I asked this stupid question.

The numbers were off the top of the abs unit 8EO 614 111M.

Thanks for your time.
VJS

Posts: 606
Registered: 02/29/04
Re: abs module
Posted: Mar 1, 2005 8:19 PM   in response to: gatotom in response to: gatotom
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I think you were looking at the Bosch ABS 5.0. Your 1998 has the Bosch ABS 5.3 and the control unit is in the engine compartment, next to all the brake lines.

--Vic
mance

Posts: 2
Registered: 07/19/04
Re: abs module
Posted: Mar 2, 2005 12:13 AM   in response to: gatotom in response to: gatotom
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The ABS control module looks like a silver cube, it's near the coolant resrvoir and has several brake lines attached to it. I would not suggest servicing the brake system unless you are confident you can do it or unless you have prior experience. It's not a good idea to put a price on safety - I had the dreaded ABS failure last year (luckily covered by after market warranty). Ran into a couple of close accidents, took it to a local foriegn auto expert - haven't had any problems since.

99 A4 2.8 Quattro
svtquattro

Posts: 3
Registered: 03/06/05
Re: abs module
Posted: Mar 6, 2005 6:53 PM   in response to: mance in response to: mance
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There's a guy on the internet who claims he can fix these things, in fact he's fixed 12 or so of the Bosch ABS control modules for $200.

www.modulemaster.com

I'm going to try him out, but how do I take out the control module? There is a plug and 4 Torx T-20 screws, but gaining access to them is a b*tch.

It appears if I can get the wiring harness off, I stand a chance. Anyone?

Kerry
VJS

Posts: 606
Registered: 02/29/04
Re: abs module
Posted: Mar 6, 2005 7:39 PM   in response to: svtquattro in response to: svtquattro
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No, it's very easy if you unscrew it through the wheelwell. There's a user in the VW Passat group, DRMUD, that wrote a procedure on how to do it through the wheelwell.

Basically it uses a similar procedure to get at the window washer fluid resevoir.

--Vic
silver-a4

Posts: 26
Registered: 04/27/04
Re: abs module
Posted: Mar 8, 2005 8:03 PM   in response to: VJS in response to: VJS
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I emailed Module Masters, and here is the response that I recieved from them---

We are successfully rebuilding the 5.3 modules. The repair method selected
should be a permanent solution.

The modules are failing due to bad spot welds internal to the module at the
microscopic level.

Cost for the rebuild is $250.00 and is guaranteed to work or your money back
with 3 year warranty.

Module should automatically reset itself once installed. No need to go to the
dealer for code clearing. So far, our Audi customers are reporting that the
automatic set feature is working perfectly... that is they bolted the unit in
and everyting reset perfectly!
VJS

Posts: 606
Registered: 02/29/04
Re: abs module
Posted: Mar 8, 2005 11:01 PM   in response to: silver-a4 in response to: silver-a4
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Thanks, by that response I believe I know what the failure is. It is probably the small wires coming loose from the gold pads on the ceramic hybrid device that is the controller for the ABS unit.

I have enclosed a picture I posted earlier with some arrows marking where I believe some of the failure points may be.

--Vic
aha2.8

Posts: 8
Registered: 06/02/04
ABS Waring system module failure
Posted: Mar 9, 2005 12:46 PM   in response to: VJS in response to: VJS
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Many of us have experienced the ABS and Brake Light warning system failure. Some owners have managed resolved this issue by themselves in cases of when the ABS sensors where out of alignment, dirty or replacing the elecrical wires leading to the ABS sensors. However there have been cases of those who have been asked to pay up to $2000 by dealerships (stealerships) to have the ABS control module replaced. Those who still had warranty coverage were lucky otherwise this had to be an out of pocket expense. I for one will have to pay out of pocket.

This problem occurs at random and the duration varies. Whilst warning lights are on, braking performance is diminished as EBD is disabled and there is no ABS. I reported this issue to AoA and nothing was done. Therefore I propose we report this issue to the National Highway Traffic Safety Administration.
For those who are interested here's the link for filing this issue online your VIN number might be required for further investigation.

http://www-odi.nhtsa.dot.gov/ivoq/ (National Highway Traffic Safety Administration)

Or you can call them on 1-888-DASH-2-DOT (1-888-327-4236) and a NHTSA representative will record your complaint information.

I HAVE FILED MY CASE
VJS

Posts: 606
Registered: 02/29/04
Re: ABS Waring system module failure
Posted: Mar 14, 2005 3:10 PM   in response to: aha2.8 in response to: aha2.8
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The NHTSA is not going to get involved because the brakes still work. They only get involved if there is a defect that will cause injury when it occurs. The NHTSA does not mandate ABS on cars so the NHTSA will not get invloved.

There are many other systems on the car that could potentially fail right after the warranty expires. For example your stereo dies, your trip computer dies, etc., the NHTSA wouldn't force Audi to issue a recall unless the failure was for example causing the cars to go up in flames.

In any case why would anyone go to the dealer and get another ABS that will have the same defect. There are places that can repair the ABS, see this thread:

http://tech.bentleypublishers.com/thread.jspa?threadID=6316&start=165&tstart=0

--Vic
kaiser_soze

Posts: 51
Registered: 04/02/05
Re: abs module
Posted: Apr 7, 2005 2:21 AM   in response to: VJS in response to: VJS
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Vic,

How did you open the unit? I've got mine out, sitting on the kitchen counter and all cleaned up. I'd like to open it myself and see if any of those wires are come loose from the gold contacts, before I send it for repair. I'd very much like to know how you opened it up.

Thanks
VJS

Posts: 606
Registered: 02/29/04
Re: abs module
Posted: Apr 7, 2005 1:48 PM   in response to: kaiser_soze in response to: kaiser_soze
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I mentioned how I opened it in one of these threads. Maybe not this one. I only opened it after I had replaced my original ABS with a very good junkyard unit.

Once I was sure everything was working well, I destructively opened it. I just cut around the edge of the plastic with hammer and chisel.

ATE probably uses a dremmel tool to make a neat cut and then uses some king of selaer or potting compound to seal it back up.

If your going to send it to ATE don't open it. If you open they probably will not want to touch it.

--Vic
schmooser

Posts: 9
Registered: 04/08/05
Re: abs module
Posted: Apr 8, 2005 8:32 AM   in response to: VJS in response to: VJS
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I've added a post to the long thread over in the VW forum around the ABS ECU:
http://tech.bentleypublishers.com/thread.jspa?threadID=6316&start=180&tstart=0

But I'll repost my message here as it is a specific Audi question and some of us audi guys don't read the VW one so much:

"...... I'll keep this short, I'm in the UK, so will try the local scrapyard options first and have requested a shipping quote from the Florida guys. Anyway, I have a unit, that appears to be misbehaving in the all too familiar way:

Unit: 8E0 614 111 AN
Car: 1998 Audi A4 Avant 2.5 TDi SE

I saw in an earlier post a document which explained some of the suffixes but I couldn't see AN in there.

Basically the question is do you reckon I have to get an AN suffix or will another one replace it, if so which one(s)?

I am assuming if I get another suffix I may have to arrange to get the code reset?

Thoughts?

=======================================
[url=http://hop.clickbank.net/?Schmooser/silentsale]Click Here for GREAT eBay tips[/url]

VJS

Posts: 606
Registered: 02/29/04
Re: abs module
Posted: Apr 10, 2005 12:04 PM   in response to: schmooser in response to: schmooser
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The AN units might be for a European model only. The link you saw was from a Bentley manual. Bentley only documents the U.S. models in the B5 manual.

BTW, how did that ebay link get inserted into your message? Did you do it on purpose, or is there something running on your computer that pastes links like that into web forms without your knowledge?

If you did it intentionally, I don't think Bentley appreciates links of that sort on their forum.

--Vic
silver-a4

Posts: 26
Registered: 04/27/04
Re: abs module
Posted: Apr 20, 2005 6:29 AM   in response to: VJS in response to: VJS
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So I took my module out, and have shipped it to "Module Masters", when I spoke to Gavin on the phone, I was told that I am able to still drive the car with out the ABS Module connected to the car. Now, I have two questions. One being, can I really drive the car with out the ABS hooked up?? Obviously I need to cover up the 12 pegs that are sticking out where the module was. And that brings me to the second question. What are those little pags?? Any one with info is much appriciated!! thank you!

and I also will get back to you with how the module rebuild goes!!
VJS

Posts: 606
Registered: 02/29/04
Re: abs module
Posted: Apr 20, 2005 9:01 AM   in response to: silver-a4 in response to: silver-a4
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I would say if the car can be driven around with a failed ABS, it can also be driven with the electronic portion of the ABS removed.

I would seal that area from dust as much as you can.

Those metal slugs are solenoid slugs and they fit into the coils in the control unit. The slugs probably control the valves inside the hydraulic portion of the ABS.

--Victor
ga_mueller

Posts: 4
Registered: 03/10/04
Re: abs module
Posted: Apr 21, 2005 4:09 PM   in response to: silver-a4 in response to: silver-a4
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Gavin fixed my 98 A6 ABS module. Just cover the silver solenoids with a plastic bag while he has the module. Mine has been working fine for 3 months. Good luck
silver-a4

Posts: 26
Registered: 04/27/04
Re: abs module
Posted: May 3, 2005 7:12 AM   in response to: ga_mueller in response to: ga_mueller
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I got my module back in the middle of last week, but haven't had time to put it back onto the car untill today. I put bolted everything back down and plugged in the module, and I've got ABS now. I didn't have to reset anything with a scan tool. I'd recomend Gavin's work to who ever may need it. Quick service and it works great, all I need now is for it to rain again so I can test it!!

It looks like they just updated their web site showing how everything works. If your lights are flashing and your abs is out, this is definatly the way to go. $250 plus shipping cost, and a 5 year guarantee.
VJS

Posts: 606
Registered: 02/29/04
Re: abs module
Posted: May 3, 2005 2:31 PM   in response to: silver-a4 in response to: silver-a4
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That's good to hear. I've been following the giant ABS thread over at the VW Passat forum and a couple of guys sent their modules in to ATE and the success rate has been poor so far.

--Vic

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