hi, arthur i have tried again to get the code from the built-in led and no luck it does not blink or flash.

#8 i am getting same code 42
#14 i am getting code 5 and code 14
#3 i am getting nothing because the moment i plug it into the pin #3 the led turns on and stays solid and when i press the button for 2/3 second nothing happens just gets more bright and when i let go off the button it just become solid and becomes dim.?

OK

That was just a test to verify DM module led/sw before further diagnosis..
I am not surpised at that..........very seldom do those leds/sw burn out.

Couple of simple questions yuo have to answer before we go further:

Did you EVER see a CE lamp since you bought the car ..either KOEO or KOER [that last one is KeyOn/Engine Running] ??????

You mentioned you tested the CE lamp...how did you do that procedure????

i have never seen the CE lamp since i bought the car either at koeo or koer.
i have tested the ce lamp by taking the gauge cluster out and check the bulb and taking it out and pluging it into srs place to see if it will turn and i verified that bulb was ok.

isnt code 5 from pin #14 means stop lamp switch? not cruise control switch? i got that info form the dtc charts someone had list on this forum i printed it yesterday.

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Yes, you are correct....I was looking at #4 .. Either of those EA/CC codes yu have will bring up the asr/abs warning lamps.
I would clear those codes , then clear the memory ..turn key off for 50 sec . On for 10 and restart. That should cear that..

..but the problem that is of concern is the N59/DM module and the cummunication code. You have a problem with CE lamp funtion , even though we have power from fuse 9 and you have verified CE lamp . So, looks like there is a circuit malfuntion in the wiring to the N59/DM or bad DM, or my original suspect that someone has disconnected/disabled the DM system to hide a constant CE warning. That is why we get no led/sw lamp..that is directly wired to the CE/N59 output through fuse 9. You are sure about fuse #9 correct ????..they will fool you.
Might want to see if N59 module has been unplugged or wires tampered with [ under dash/driver side] ..I do have the schematic for further test, but start poking around with these thoughts in mind..you need that CE lamp to light when KOEO..

[quote=Arthur Dalton;1511394]<>

Yes, you are correct....I was looking at #4 .. Either of those EA/CC codes yu have will bring up the asr/abs warning lamps.
I would clear those codes , then clear the memory ..turn key off for 50 sec . On for 10 and restart. That should cear that..

hi arthur,
could you please explain to me how i can clear the code? by disconnecting the battery? or at diagnostic connector and how do i do that thanks? i going to start looking under the dash driver side.

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hi arthur,
i have reset the code for the abs/asr and i verified it by one blink that code was cleared. but the abs/asr is still on?
i havent had a chance to find the DM i will look at it soon as i get some time. you think it might because of DM being disconnected and thats y the lights for the abs and asr is still on? it was verified after starting the car and lights did not go off.

Use the search feature..if you could ..

Basically, after each code is retrieved, you wait 2 secs, push button for 8 sec ..that clears that one code ..you have to do it individually to each code ..then you have to turn key off for 10 secs and on 10 sec and restsrt..but then memory is different.
There is a ton of clear code info there .
If you really can't find it , I will walk you through..but i just hate typng that stuff for ther 1000th time.

>

Ok ..at least you got that down . so..
Now go bring up the Single flash, then wait 2 secs and hold button for 6/7 secs. Now, turn key off for 50 secs , on for 10 and restart..that clears the memory base line.


However , I believe your ASR/ABS lamps are a result of No Communication with N59DM..that is why I want you to work on that part...forget the asr stuff for now.

Also, be aware that anytime the codes are cleared from the DM module, the codes can not be retrieved until the module has done all the emmisions self-test for each code ..This takes a few full drive cycles ..you just bought the car , but you should have driven it enough for this procedure to have been satisfied.. The reason I did not bring that point up is b/c even though the DM will not respond until then, the Dash CE should still come on at KOEO position.. so, I do not believe this to be the case.... just some DM info for you or anybody reading to be aware of.

If you get to the DM, according to the schematic I have up, you are looking for 12v at pin #4-rd/wht.. If you have that , make sure pin 9 has br/wt going to CE and CE return is rd/yl, eventually returning to the led/sw at connector box..if any of this is missing/cut/broken/unplugged..then that would cause your problem of no CE.

hi, arthur
i have done that to each individual code and then i have turn off the key for 10 sec and on 10 sec and then restarted car. and then turn off the car and waited 90 sec and on for 10 sec and went back to see the code and i only one (single blink) that verify that code is clear but my abs and asr are still on after i have restarted the car?

Go re-read post 38 for MEMORY clear..don't confuse CODE clear with MEMORY clear.....they are different animals

thanks arthur i will do that and let you what i find.

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OK
as a side note ..I do notice that the OVP also has a circuit involved with the DM lamp, but you did state that the fuse was good and the OVP was replaced ??

hi, arthur
12v at pin 4 rd/wht at koeo right? or is it constant and pin #9 at the module right or at the connector
on last thing do you have a picture of the module? where is located under the dash drive side or how does it look.

yes the fuse was replace and it was good from before.

Ok..you may want to also verify that the OVP is not the original one b/c they were famous for electical gremlins and any old one should be replaced , regardess of it's present condition... Benz finally upgraded the part. Take the old one out , look at the part# on the side..if it is 000-540-52-45, change it . The replacement is 000-540-67-45, which in all probability that is what you will find in there now.......
Before taking it out , give it a few taps and see if that ce comes on KOEO, just for kicks. Could have a bad connection at the base.
I very much doubt you have the original OVP b/c none of them lasted this long, but it only takes a min to check and no matter what, you do not want the old style OVP in your car, for sure....even if it has nothing to do with your present probs