ASR fault on W124 M104890
 

Hi there.

First i would like to say GREAT forum you got here.
Im from Denmark so exuse my english is a bit poor "i think"

I was wondering if any one can help me to find the problem with my ASR.
My car is a 1991 W124 300-24 (M104890) "not the 93-96 280/320"

My car is equiped with the great ASR system wich means that the cars accelerator system is elektronical.

I have my ASR error light on in the dash board.
The problem started to be pressent some times but got worse and finaly permanent.
When the ASR light came on i could still drive the car as it was not going in to the famus limp home mode as the later models did like the 280/320
But at the same time the ASr light came on the CC / cruise controle would always go infunktional (not working)
How ever when the error first came i could always just recircling the key (stop and start again) then the ASR light would disappear until next time.

When i look at my engine, i se my gas cable attached to a lot of linkage that is attached to what is discribed as the speed position sensor where also the cable from the automatic gearbox is attached.
But another linkage is going down to the throtle body with some kind og a metal linkage that has a spring inside like some sort of possibility to adjust the throtle without the influence of the position of the speed pedal.
That gives sense because from the throtle body there goes another linkage down under the inlet manifold to an elektric engine that is soposed to manage the throtle bodys opening of the gas.

on pin 14 in my 16 pins diagnostic plug, i got 5 codes read out

4 = CC switch (S40)
5 = Stop lamp switch (S9/1)
6 = Starter lock-out/backup lamp switch
7 = CAN data bus signal from EA/CC/ISC, ABS/ASR, HFM-SFI or LH-SFI (right or Left) control module
9 = Left rear axle vihicle speed sensor from ABS/ASR control module or in W124 chassis Hall-effekt speed sensor.

I haven´t read the codes out before the error accured so I don´t know if some of them where old codes.
I diden´t had the chance to erease the codes before my mecanic just went changed the speed position sensor (more than 900$)
it got the mercedes number 000 540 1817

unfortunatly this diden´t solve anything :(
My car still has it´s ASR light on it is still not working togehter with the CC and im just over 900$ more broke.
BUT all the codes could be eraesed after this and has not come back ever sinse, but again i don´t know if it where old codes as i diden´t had the chance to erase them before the repair :(
I want to change the electric motor or what ever the linkage is attached to under the inlet manifold but it is realy not very easy to get there nor se anything from the top or bottom as the starter and a lot of other stuff is in the way.
This is clealy not the easy job as on the later M104 model 280/320 where it sits on top of the inlet manifold as a part of the throtle actuator.

Can anyone help out here to get to the bottom of this ASR and CC problem, please help, im dying to get it solved without ridiculess bills at a dealer shop as I already has been a victim for now 1 time.

Best regards to all of you.
BRABUS 3.6-24

I would change the brake lamp sw before anything..common ASR problem..

beake switch
 

THanks for reply.

I already tried that with no resault.
I also messured the contact at the old switch and it worked fine.

But what i noticed is, i compared my car to another one with the same engine and with the ASR system.
His electrical engine that is located under the aluminium inlet manifold was deffently working as you could hear the engine run as the gas pedal was pushed (ignition ON, Engine OFF), mine is dead silent and is not moving at all, leaving the linkage to adjust the throtle, but this is only working if I remove the linkage that is attached to the electronic device i mentioned is attatced under the inlet manifold, othervice it holds against the throtle pedal and i can´t give it some gas to rev up the engine.
without this linkage i am also able to se "if" the electronic device is acturely moving the linkage, but it is dead silent and not moving :(

Im almost sure it is this electronic throtle actuator i think it´s named on the later model, but haw can i check that for sure before bying antoher expensive part?
And does anyone know the Part number for this M104890 EA device?
Anyone even know the M104890 model 300-24 ? and the ASR system that this engine is equiped with?
It is deffently different to the later M104 280/320 engine ASR system.

Best regards from my to you

Both the brake sw and the NSS have brought up a power glitch codes..there is only one way thay can do that...by having a connecion failure.
Most likely intermittant.
I would also spin all the fuses in their holders...and check for equal tire sizing/pressure.
If coupled with ABS lamp, I would also suspect the OVP or
a low voltage condition..This is not a diagnosis..it is just verycommon problems/remedies one would find on these systems

Asr
 

yes.

It is effently not the tire size that influence the non working EA with the Ignition ON and Engine OFF i think.
i have also checked the NSS located at the gearboks, that was changed for only 1 year ago due to start problems.

my guess is that it is this EA, i located the plug on the inner fender, so now i just need to find out what to messure ?

<It is effently not the tire size that influence the non working EA>

I agree...but it certainly could be the OVP or fuse connection ....

..which is why I mention the complaint being coupled with ABS lamp..that is same feed on the later models , not sure on yours, as I have no schematics for that chassis...

agree
 

Yes i agree with you.

my chassis is the W124 031 never sold to the states or GB i think?

One thing i can se at all my metal boxes behind the battery is that on the later model the ASR and ABS is built in the same metal box with 2 plugs/cables going out on the top.

On mine the VDO CC and the ASR metal box is built together with only 1 cable going out of the box.
The ABS box is alone in mine

I also read tons of this material about commen errors,
OVP relay i have one in spare i tried to change with and it was not that either.
The fuses has also been turn 10 times and changed out with new ones.
The ABS lamp is not on, only the ASR lamp is lit up.

So i guess some of the codes i read out acturely where old codes.
Anyway they are all gone now and have never showed ever since.

But still i got the ASR lamp lit up and the system is not working together with the CC.

In my way of finding the error i have spoke to many mercedes people, and come op with that this ASR system on the first M140890 engine is a realy rare option not many of them have.

One mercedes dealer here told me when i asked for a error codes read out, that the W124 never was fitted with this system so it was not possiable :confused: so when i showed him the 16 pin plug he said that was just an preparation for it, but it was never compleeted to work.
When i finaly find Jims great home brew diagnostic tool and built it my self, then i went to the same gye at the mercedes dealer and showed him how it should be done.
He was very surpriced and had never heard of it.
So i went to 3 others mercedes dealers here in Denmark with the same resault,,, no one knowes anything about the W124 here any more i guess, so it is deffently not there im gonna put my w124 for a repair of this ASR system, wich all by the way mentioned i should by a new control unit for (hold on) 2500$ :eek: no way im going to trick me in to that change, because they wont take it back if it shows NOT to be the problem (great service :mad:) if they mount it they will charge me another 350$ for it.

This is a freak show i think where im the klovn in the midle of there freak show. Sad it is the way they conduct buisness i think.

Well as mentioned i have also read a lot about low voltage van give huge problems, so i also went change the battery and the voltage relay.
both before and after the car ran fine and with Ignition Off the voltage was 12.4 btoh before and after
With the Engine On the voltage quickly climb to 14.6V both before and after the battery exchange and change of the voltage relay/regulator.

I have realy been every where to try fix the problem, the only thing left is the controler unit (2500$) and the EA (unknown data and cost)
Any one know the part number and price for the EA to this model Im realy interested to hear about it :)

<So i guess some of the codes i read out acturely where old codes.
Anyway they are all gone now and have never showed ever since.
>

Do you get a Single Flash on pin 14 ?

The EA part number depends on which transmission you have - 722.3 or 722.5. By the way I think your engine number is actually 104.980 rather than .890.

OK

After you verify Single Flash on Ea/CC module, there are a couple of other test you may be able to do as I see you have some equipment.

We need a V reading on both sides of fuse #6
That will be power inputs to N4/1 -EA Control Module.

On the ASR control module, [N30/1 ] as in earlier posting, we need feed
from OVP to pin#1. I do not suspect that feed b/c you do not dispaly ABS lamp...Do you have ABS lamp when key is On, engine Off ?

Throttle position input/output are pins 34/31, respectively , on N4/1.
Might want to check there.

On N30/1 , they would be 13 and 16.
I would also check for closed CTP sw at idle ..That would bring on ASR w/o ABS lamp b/c that is direct Actualtor feed from Fuse 6.

Here is EA/CC ASR codes for pin 14

http://www.peachparts.com/shopforum/tech-help/107630-e320-16-pin-dtc-charts-inc-pin-8-pin-14-a.html

I will also say that you are correct that the US never had that .031 chassis, but I hardly think that the ASR system in your car is any different or special than the standard ones in our USA chassis 124.051. They may be the same engine [ presumimg you have an engine typo ] and should be just first generation EA systems, so I highly doubt that my .051 info and schematics are any different.. they may be , but that would certainly surprise me.
This would be the 124 Coupe/124.051 with the 104.980/24 valve engine /1990 thru 1992/US

If you are correct on your engine #, void the above info....
Further research does show the Barbus engine, but I know nothing about these .
I have info for 104 engines # built for US market, so yours is a Euro thing, as I see that Brabus site list it as you do......ie.-104.890.
I do not even know if that is something added to a .031 or is a factory car ??[ pretty nice one , too]
If that is the case , we are incorrect on the assumption of a 890/980 possible typo..

If that is the case, I would surely have no info or experience on that chassis.

Now that I see what you have there , this is where you want to go.


They are into performance Chassis and I am sure you will find your answers there.

http://www.peachparts.com/shopforum/mercedes-benz-performance-paddock/?daysprune=-1

replay of ASR
 

Oh, great with some more help and questions to dig deeper with.
I will quote the questions and follow up with the answer:

1.Do you get a Single Flash on pin 14 ?

Yes i get 1 flash after shorting the pin 14 to ground in 2 sec. Then 2 sec. After it gives me 1 flash.
Wich indicates no error detected right?

2.The EA part number depends on which transmission you have - 722.3 or 722.5. By the way I think your engine number is actually 104.980 rather than .890.

I got the 5 step automatic transmition wich i recall to be the 722.5
My engine number ?!?! I realy now is confused about it ?!?! M104890 I Now don´t know where I got it from??? (3.0 24Valves 220HP 265 Nm) produced from 1989 to 1993 then the M104980 came with the 2.8 and 3.2 liter 24 Valves engine (3.2 = 220HP 310 Nm) from 1993 to 1996 That was what i Thought, I now see that is not correct.
My engine number must be the M104.980 your right I can see when i compare it to other parts sites. And the later M104 must then be M104.990 3.2-24V

3. We need a V reading on both sides of fuse #6
That will be power inputs to N4/1 -EA Control Module.

Ok, i got my Fluke instrument and read 12.0 V on both sides of fuse 6 ( i guess it´s the one in the fuse box?) ignition ON Enigine OFF
13.6 V with engine ON

4. On the ASR control module, [N30/1 ] as in earlier posting, we need feed
from OVP to pin#1. I do not suspect that feed b/c you do not dispaly ABS lamp...Do you have ABS lamp when key is On, engine Off ?

Yes i got feed from OVP to Pin 1, i got ABS lamp On when key is On engine Off like normal, and the ABS system is also funktional 100% perfect like it should.
Only the ASR lamp stays On after starting the engine.

5. the US never had that .031 chassis, but I hardly think that the ASR system in your car is any different or special than the standard ones in our USA chassis 124.051.

Yes it´s the same ”deal” like the .031 chasis mine is just the sedan version and yours are the coupe version anything else is exactly the same, engine and ASR system to. (exept for mine has the Brabus conversion) but that is not any different with the ASR system.

Lets just bee clear about something regarding the chassis and engines
I think I was Wrong now, but again like you said.
Were did you find the 890 number?
If we only talk about the 24Valves engines and forget the M103 12V.
Then the first (1989-1993) M104 24Valves engine that came was the one i got with the aluminium inlet manifold and the ignition coil located on the fender side.
The later (1993-1996) M104 24 Valves engine that came was the one with the black plastic inlet manifold, with the ignition coils located on the top of the engine under the plastic cover.


6. I see that Brabus site list it as you do......ie.-104.890.
I do not even know if that is something added to a .031 or is a factory car ??

Oh where is it you see them listing it as I do?
My car is delivered from mercedes factory as an 300E-24 with the M104 engine stock.
Then the car was delivered to BRABUS 1 year after by the owner throgh the org. Mercedes dealer and they say the engine job was likely done on the original engine and not a swap with another modifide engine.
But they are not 100% sure as the documentation from that time where not kept/saved.

Anyway i compared the ASR system and linkage controls and other stuff around the engine bay with another original 300E-24 M104 same engine and all, and it looks 100% the same small controls and stuff all around the engine.

So i guess your info must be the same as my engine.
We also got the WDB124.051 here in europe and that looks like my engine just the coupe version J

I hope this gives something to get closer to solve my problem with the ASR lamp/system.
And thanks for the comment on my car looks nice J i think to J
Best regards
BRABUS – Denmark.

Could you have a non functioning ETA? Is it possible the wire pigtail failed from it?

Reaching for straws here.

There is a site you can plug your VIN into and your engine # will come back..I think it will be a 104.980 engine..and Bar just punched it out and whatever elase they do.
My concern is when they turn these into rubber burners , they default the limp so they can drag them..so that is where the performance site would know that stuff

We will post the VIN site in a min..

Anyone?? ........I am swamped currently.....

Then we can get to the schematics for first gen-ASR [ which I think you have , regardless of barbus]

The EPC shows a 104.980 with a 124.031, don't know about the Brabus. ETA part number for the 5 speed automatic is 002 140 23 53.

I was just wondering if Barbus re-designates the eng to 104.890 when they get thru with them for the sake of giving it a new ID #..that is all I was thinking..we both suspect it was orignally a 104.980.
I just suspected a typo b/c of the possibility of mistakenly flipping of the two numbers just happens to fit 890/980 and I also noticed another typo referring to it as a 140.890 engine.

But then I went to the Site and saw the engine # listed, so I was not so sure about it being a typo anymore, as he has it listed there also as a 104.890.

http://www.bilgalleri.dk/html/gal_visbil.asp?ID=69175&ipc=219870

Wait til the VIN confirm comes back and that will settle it.............

Win number
 

Hi again.

Oh I see now, the site i gave the link to is just "My" site info :)
I wrote down all the info my self and uploaded the pictures of the car :) so that is just my info given on the site not some official info.

ah I remember that Rusian site now, why diden´t I think of that :confused:
Well it tels me that i got the following things :o

Model300 E-24
Chassis1240311BXXXXXX
Engine104980 12 XXXXXX
Transmission722501 03 XXXXXX
4255-speed automatic transmission (с 01.02.1988)
471acceleration skid control (ASR) (с 01.07.1984)
650sports chassis with 15-hole light alloy rims (с 01.12.1988 по 28.02.1993)
950sportline (consisting of codes 65/0, 243, 281) (с 01.10.1989 по 28.02.1993)
There is a lot more options, but not relevant for this matter.

And my Car was delevered February 1991 i guess i got the first ASR "type"
But at the rusian site it says (c 01.07.1984) ??? what is that reffering to?
I thought it was the start of production at the specific options?
Did it realy came that early ASR as an option?

The ASR system I think is not changed in step with the sportline chassis as mine is added like en extra option and BRABUS diden´t changed anything about it.

Before i got the ASR lamp on, my ASR system worked just as any other 6 Cyl. with the ASR option.
I also got the snow chain botton and no complete turn off of the system.
My car couldn´t spin the wheels before, but now it will go fore it if i let it :D

An important info from my mecaniac is that he removed the linkage from the ETA that goes up to the Throtle body othervice it wouln´t take the gas/revs manualy by the linkage from the gas cable.
But that dossent change that the ETA or is it EA ??? still dossent work.
I found the plug to the ETA on the fender next to other elektronic.
If I discornnect this plug, the engine will turn Off/go dead.
I think that is some sort of safety fuel cut off.

I will try to find some pictures of my speed position sensor that has already been changed.

That is what I thought from the start,, but the engine numbers and the Barbus had me out of my territory, so i was not about to give info on a system that I know nothing about. Those Barbus guys are very hip to the lastest Tech stuff , so who knows what they do about ASR defeats and such.

Anyway, looks like it is just a stock ASR set-up and I will get the schematics out for the 124.051 and see what I think ..

..or I may even get the Schematic #'s and you can look them up on the net..then you will see where some common test points and the internals of the EA, etc look like electrically......
Those typos will kill ya.................

price of part
 

Holy sh... that part is expensive. 002 140 23 53

org. from Mercedes i must give
1779.79 US $ here in Denmark where we pay 25% sales tax/VAT
Even with my dealer discount at 8% for this item i must give
1637.40 US $ here in Denmark where we pay 25% sales tax/VAT

I might want that part from Germany were they only pay 14% sales tax/VAT

Test:

On brake sw. -S9/1 ....take a jumper wire and ground pin 2 [br/blu wire..]
Does ASR lamp go out?

test
 

No the ASR lamp dossent go out.
But i also changed that brake sw, so i wouldn´t expect that to be the problem, but ofcause your test might be "testing" something else?

I was just wondering about something.
Normaly the EA gets a signal from the throtle position sensor so it knows exactly how much gas to give and then do it :)
But if an error makes the EA goes into limp home mode/Off/non function mode :)
Then youre acturely making the Throtle body turn by the manualy ROD that is attached from the gas cable.
And then again you are turning the EA manualy.
Can this destroy the EA if you turn it/the electric motor manualy for a longer periode like I have done? when my ASR was not working?

Because the problem started out only to come sometimes and then it went into "Limp home mode" wich means i could only give it 2/3 of the gas and not only 1000 rpm like I have heard the later models do.

well that was just another input of wht it might be important to fix this in a row when a probelm like that shows up.

But i got some stright 110% right infos on the gas cable system i got on my car with numbers and even a drawing of it.

Se the rusian site here where it is showned.

http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=124031&M=104%2E980&GA=722%2E359501&GM=717%2E450&CT=M&cat=520&SID=07&SGR=190&SGN=1 0

I got changed the part that has number 8 in the drawing
And the mecanic removed the part number 59 in the drawing to let the gas cable controle the revs :)

The EA is not showned at the drawing i can see, but it sits in the other end of the rod 59 throtle body that dont has any number

I want to find the EA on that site, but i hassen´t manage to do so, can you might find it?

http://www.detali.ru/cat/oem_mb1.asp?TP=1&F=124031&M=104%2E980&GA=722501&VIN=%2A&

Best regards

Ok

I think this test procedure thing I do is not going to work in this case, so it is best for me to try and get these schematics to you.

My test are strickly electronic logic tracing off a schematic at strategic points in the circuit... where each test results determine the next logical test. They usually require a yes/no responce.
I can not justify each test to you without much time and typing, so if you have the same schematics , maybe that will make it easier.
Let me see if I can do some scanning and get back to you..

Click on "07 Injection", then "015 KE-Jetronic", then it's #68 in the diagram, the last #68 on the parts list. It is shown as a U.S. part and lists for $1,100 which should be available for about $900 to $950.

#68
 

I think you mix the new ETA system in the later M104.992 1993-1996 with the one i got.
Its right that the hole thing is included in the throtle body at the later model, but not on my type of engine.

The 68 is Only the throtle body with the switch, nothing more.
If you click on "07 injection", then "190 CONTROL USED W/ACCELERATION SKID CONTROL" then look at the #59 (rod) and read the text for it.
It says "from final controle element (that is the EA) to throttle housing"

I have with my eyes confirmed on another identical car, that it is the "Final controle element" that is the electric motor or EA if you will.
So that it is the Final controle element that is adjusting/controling the throtle body corrnected with the #59 rod
But to locate the mentioned "Final Controle Element" is the hard part i think.
Im happy to find out that the part you refered to as the EA is realy not the thing i need or I think is broke on my car, but im worried that the "Final Controle Element" might just be 5 times more expensive :(
I hope not, but i can only find that out if I/we can find the part number of it.

The switch at the throtle body is what i think is the Open and Closed throtle regonision signal to the controle system.

#190 merely augments #135 which also does not show the part. Your car is clearly KE era which does not extend to the 93-95 3.2 motors. But the definitive answer is to get the part number off the car, especially because of the Brabus handling.

If anyone can find the part number for the EA on my engine type M104.980 i will be pleased :)
My EA is identical to the one found on the W124.051 chassis with the same M104.980 engine :)
My BRABUS option has not changed anything about the ASR system or the way it works.
I found the plug that goes to the EA from the Control metal box and it is identical with the plug from the Speed position sensor with the part number 000 540 1817
What can be messured here at the plug of the EA? any ideas?
This could be a very easy way to locate my problem to the EA as I am sure this is the problem with my ASR.
What pins goes to what inside the EA?

BR
BRABUS

Sometimes this opens , sometimes it doesn't

http://www.garagelibrary.com/dl/index.php?dlid=4

If yes, then go to model/yr., ... then wire diagrams,.. then schematic pages 138/EA...138/1 EA/CC w/asr , ..and 152/4-ABS w/ASR/EA systems.

These are what I have here when we started the test procedures .
You have already establish OVP feed for N/30, fuse feed for N4/1 , and the ground I had you do was to verify the neg side of those circuits for completion to ground.

You will see where I was going with the test and this will give you what you need to procede to next test/s .
Mine next choice would be EA Close throttle sw. contacts by checking pins 6 and 7 with ohm meter , as that is in that power chain.
It is my contention that your ASR system is not being activated due to a power feed problem , so that is why I way concentrating on that series of circuit feed components/connections. That is shown in those schenmatics and that is where you may want to continue.

Good Luck

WHen i click on the link, i get a CD download site.
I guess i should downlaod that, and then follow your instruction right?
Or is it directly on the site you mean?
I can´t find the wire diagram you refeer to?

When i try to click on download the W124 cd i get this info:

Error:
Sorry but you do not have permission to view this page. Contact the admin if you think you should have access to this page.. If you believe this to be in error, please quote the above error and report this to the admin

Try log in /register on the left side.

Like I said , sometimes it works , sometimes it doesn't
He emailed me a few weeks ago and said he is working on it...

It was a cool site for the CD , but he ran into trouble with some systems.

If anyone has the CD you know , the schematics are in there for the 124.051 w/ASR-EA / 90 thru 92. The 124 CD is a set of two, with the schematics on CD #1.
I assume yours is the same.
Once you have the schematic , you can follow the circuits and decide which test . I have no instructions .

EA is not an unambigous abbreviation. In various MB literature it can mean engine actuator, electrohydraulic actuator, electronic accelerator, etc. EA / electronic accelerator isn't a single part, it's a system including the EA actuator and the EA control unit. You have the part number for the actuator from post #16. The part number for the control unit is 124 545 01 32. But still it's hard to know how Brabus may have altered your car.

Ok, I Acturely think i got one CD with some W124 manual and technial materials, ill go check.

But one thing i still don´t get, how can I have the ASR lamp lit up right from the start of the car, and no error codes to read out on #14 I Acturely got 17 flash on pin #8 the DI module. that indicates the Crankshaft position sensor faulty.
But it goes away when the car is started, and i think that is normal as the computer can´t see the positions sensor working with only the ignition On and engine Off.
But still strange that i don´t have any codes on pin #14 i think.

If you have CD #1, that is where the ASR/EA schemitics will be found.
As far as codes at 14...My suspect is the ASR is not being powered up so it will have no ASR codes b/c it can not search for them if that system has no power/is not activated.
An ASR lamp should go out after start ..if it does not , then it is not ON...so your wheels spin. Your problem is you have NO ASR Activation.
So, that is why I was checking ASR feed circuit chain.
If one see EA on a schematic.. EA means that schematic is for a system with Electronic Accelerator.

An example of such would be---Schematic 124.0/.2.. ABS System - with/ASR/EA .

Reason being you can have an ABS schematic WITHOUT an EA system.
Your chassis HAS an EA system.

4 units in 4 places
 

Your right it can means a lot of things, some times it´s also called the ETA but that is in my opinion the later models setup, where it all is sitting in the throtle body.

If I should piont it out or what you call it, then the system on mine is working like this:

The gas pedal is by wire, the wire goes to the rods that goes and pulls the speed position sensor(0005401817 ), the position of the gas pedal is seen/messured from the speed position sensor and then it sent the signal to the VDO Controle module metal box located behind the battery as you descriebed (1245450132).
The Controle box see the signal and then send this information to the "Final Controle element" or the Electronic Actuator if you will, the part number i miss...
From the Elektronic Actuator/Final Controle Element (wich is the electrical little motor) There is a Rod going up to the thing you posted in post #16 and that is not the EA that is the Throtle body switch/Throtle housing (0021402353 )

You can say that in a M104.980 this 4 speed/gas responding elements is sitting 4 differents places in the engine compartment.
1 Speed position sensor
2 Controle module, metal VDO box (behind battery)
3 Electronic Actuator/Final Controle element/ the thing that electrical adjust the throtle.
4 Throtle body Switch/Housing.

On the later model like the 3.2 M104 the ETA is one thing where you got my numbers 1, 3 and 4 in one unit instead of 3 units sitting 3 different places.
Until now we got all the part numbers on the parts 1, 2 and 4, but we are still missing the part number on number 3 (the EA)

Correct me if I´m wrong but I Think you got the idea of the electric device that pulls the trotle(EA) is located inside the throtle body, that is not the case on the early ASR system, it sits another place under the inlet manifold and pulls the throtle body by the Rod with number 59 in my previuos picture.

I hope Im not the one that misunderstod something here?

Best regards
BRABUS

your right about the ASR lamp is lit up all the time and the system is not working = Spinning tires.
I would expect that to generate a fault code, but as you say, the faulty part needs to be feed with power to do so.

I will check later on the cornector where the plug from the EA goes to if there is power to bee messured 12 volt i guess.
The CD i got is temperaly gone in the mess :confused: hope i find it later.


I got the impresion that the EA was the electric device that pulls the throtle to rev the engine, but I see now that it might just be a general Headline for a complete system.
But what are the part then called that eletronic pulls the throtle???

Send me a PM w/email and I will jpg the EA to you and then you will know by the connectors and wiring to the 2 units if this is in fact the same system.
This will also give you the inner modules circuits/electronics for testing each section w/ohm meter.

My PM is stricly for data copy , such as schematic transfers.
I am on 8 different Forums and have no time for Private Diagnostics, so please adhere to this.

Scematic
 

Hi again.

That is deffently what i needed :D great stuff to do diagnostic with.
I am an Elektronic technician so it is great to study.

But what i was more than impressed of,I was siting and seaching for some ASR on Google and I found a site that descriebes all the mercedes safety systems as the ABC, ABS, ASR, ASD, ESP, BAS and more, and it gives you all information about the system in box diagrams and technical explanations with part numbers and pictures, even small videos of haw and where the different stuff is located in different engine types and how to make diagnostic and test about the system and maintain it.

But as my laptop went dry for power and suddently powered down, I diden´t reach to save the site!?!?! and now I can´t find it again.
It is for sure realy realy good DIY stuff also for non technicians.

arhhhh haw can I find it again,,, anyone knows the site am talkng about?

anyway i haven´t got the time to day for a quick test or look at the car, but I will be back when i sort this ASR problem out, and find the very superior mercedes safety site again.
That site should be somewhere on this forum for everyone to find that wants great and detailed information about all the systems.

The schematic I sent was to verify if that is in fact the system you have..There are 4 pages to that system, but I did not want to go to the trouble of scanning the remaining sections if it was not apllicable to your chassis.


However , if you find that site you mention, just post that instead

confirmation
 

Hi Dalton.

I finaly got the time to messure the data around the circuits and controls.
As suspected my ("R25" Elektronic Acelerator Reference Potentiometer) Unit is giving the data as it should.

The Safety switch opretaes normal
The potentiometer is messuering like it should also when i pull in the lever at the (R25)
I got the power and ground circuit confirmed also.
So that is great, because as mentioned the unit is bran new.

But my ("M16/1" Elektronic Accelerator Actuator) is the one i got suspected.
I messured the safety switch to be open witc it is suposed to be at idle/engine off.
The inside Elektric motor is normaly turnable with the control linkage that is attached to the unit, when the Accelerator pedal lever is not pressed.
But my linkage/Electric motor is dead stuck, i can´t move it at all !?!?

My friend who has the same W124 with the same engine and ASR with CC system is easy turned by finger at al time, unless the Electric motor is activated by the system.

So this makes my troble shoulding to an end for now, because even with the plugs pulled out, mine is still unturnable.
I guess the electric motor is burned stressed or shorted to dead.

But my elektric engine started out only to let me down some times and not all the time, and by recircling the ignition i could make the ASR lamp go away.

So the error was comming more and more frekvently, and at last it went permanent.
This tells me that it couldn´t be an electric problem, but something that was on the way to wear out the more as it was used.

My potentiometer also messured a litle wired and not stady as it should when the lever is stady.
I got 30 Kohm from pin 2-3 (the lever to the start of the potentiometer)and
20 Kohm from pin 1-3 (the to ends of the potmeter)
15,8 Kohm from pin 1-2(the lever to the end of the potentiometer, the levers normal position when engine off)
The voltage suply was messured to be ok also.

So i guess i will go do the dis attachedment job, but I have no idea on how to get there under the inlet manifold, wich I realy don´t wan´t to take of.

Could you sent me the other 3 of the diagrams you got Dalton?

Im realy happy for the help i got.

Here are the gas regulations components as it is placed in my engine M104
http://qclt.com/train/w202/w202/tractcontrol/asr_loccomp.htm
I don+t know why the M16/1 is not shown in the picture nor the list, but it is deffently there in my engine compartment :)
sitting in the right end of the linkage rod with the number 21 in the picture, and that linkage rod is going down under the inlet manifold where my M16/1 is located (Electronic accelerator actuator) damn hard to remove :confused:

by the way i found the site, and it is here :)
http://qclt.com/train/w202/w202/tractcontrol/asr.htm

Best regards
BRABUS

Finaly i got the part number
 

To day I went to Mercedes in Roskilde here in Denmark.

There where a realy great guy that toke an horner into finding the piece i needed even knowing that it was my only quest (to find the part number and price) and not acturey bying it :) at this time at least.

Like me and all the other mecanics I have asked for help to find it, they all just came up with the same answer it must be the R25 you are looking for or the throtle body switch.
But finaly we found it in the system drawings under electric euquipment
And not under the engine menu.
there are several models, for different engines and if its got CC and/or the ASR system.
But mine got both the ASR and the CC so i guess this would be the most expensive model to the M104.980 Engine.

The part number for this is 007 545 44 32
The price was just as high as the R25 and then some.
1786 US $ :eek:

The unit is shown here at the rusian site and is numbered 123:

http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=124031&M=104%2E980&GA=722501&VIN=%2A&CT=F&cat=15S&SID=54&SGR=690&SGN=20

My next step is to demount the old one and then look inside it and see what is going wrong :)
Ill keep an update here.

Update
 

Ok, long time now...

But I went on the Ebay.de and found a used unit for only 90$ so that was deffently cheaper than a bran new one.

I got it home and was realy worried that it might be another used "dead" one sold on ebay, but it was acturely a good one :D

I pluged it in the socket at the left side in the engine compartment and my ASR light turn off :D YES... so that was the final clarification that I needed.
The error was the Final control element and only that.
When i pushed the throtle, the final control element turned it´s linkage where the Rod will be attached.

Now I have to demount the inlet manifold to get there as my next job.

The car is still running great and I think it´s very wrong what everybody tells about the brabus 3.6 engines around diffenret forums.
The engine is god and dont eat head gaskets or wear out because of to big bore.
I drive my car the way it is ment to be drivin with such an engine and then some ;) and I have almost never any problems regarding the engine.
Only thing is the radiator fan clutch that I changed and the Thermostat for the colant.

I wish everybody could try how well the brabus 3.6-24 is acturely running compared to the stock engine.
It´s a true racing machine built to last.
I don´t know about the 3.6 M103 but it should be the same story and I belive that most people just repair or rebiult them into to problems becuase of lack in prober repair/rebiult jobs.

Did you ever get the ETA switched out? I might have to do the same thing. I don't want to have to remove the intake manifold again. I had to do that once to clean out the EGR tube. It is a huge pain. Do you think you can get to the ETA from underneath?