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 havenīt read the codes out before the error accured so I donīt know if some of them where old codes.
I didenīt 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 didenīt solve anything
My car still has itīs 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 donīt know if it where old codes as i didenīt 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..

__________________
A Dalton

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 canīt 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 itīs 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

__________________
A Dalton

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 ?

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...

__________________
A Dalton

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 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$ 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 ) 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

Anyway they are all gone now and have never showed ever since.
>

Do you get a Single Flash on pin 14 ?

__________________
A Dalton

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

E320 16 PIN DTC Charts inc. pin 8, pin 14

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.

__________________
A Dalton

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

__________________
A Dalton

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 donīt 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 itīs 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 itīs 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.

__________________
Brian G.

1994 E320 Wagon with many warts SOLD
1995 E320 Wagon with a beauty mark or two FOR SALE

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]

__________________
A Dalton

http://old.mbclub.ru/mb/vin/?lng=eng

__________________
A Dalton