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  #16  
Old 04-01-2008, 04:32 PM
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< You will need to find someone ( M-B dealer if necessary ) to do this.??..>>


Why did you fail to mention the DM Button under the hood ??
Yeah, I know, I know.....



That's is what we attemp to do..and why they inquire here..........



We would only tell a person of the tool AFTER directing them to the fact that they have simple owner DM/CE access under the hood w/o any special tool/scanners/etc.. the tool instuctions are for those who have problems OTHER than and BEYOND a CE light, [ in case you are not aware of that], at which time we recomment the "homebrew tool"... [ which has been a Magnificent Technical Diagnostic aid to this Forum..ask ANYONE who has made it!! ]

So, aside from that, just when did you decide to advise each of us on how to answer a Tech post.???
Do you have some type of profile technique of the posters capabilities that we should consider before we post any pertenent Tech info that may be of assistance to solving their problem or answering their querry ???

I purposely made it a point to cover the primary info for this person in a reasonable fashion and included enough info for the poster to decide their own capability factor....

If we are to limit passing on/out knowledge b/c someone forewarns us that in their [ your] judgement we should not tell/show the inquiring poster how to find an answer or make a tool to aid in solving their problem WITHOUT going to a DEALER, then we will lose the main funtion of this Forum and I have wasted many years of tutorial skills and communications..........without a fee, I might add.. My gig here is basically to help posters from having to GO SEE THE DEALER ....

If the poster does not comprehend the advice given, so be it...it is way better to have posted the info than to have not posted simply b/c one has assumed it to be beyond the posters comprehension....let alone the knowledge gained by others that follow the thread...................ya 'now what I mean????????????
Your points are well taken anyway........................

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  #17  
Old 04-01-2008, 07:05 PM
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wow .. certainly filled with very active and enthusiastic people! Going out to check the led codes.
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  #18  
Old 04-01-2008, 07:14 PM
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Arthur Dalton, Thank you for a detailed post. I found the box and pressed the button, nothing happened. I turned on the ignition and depressed the button. The LED comes on and stays on as long as I keep the button depressed. No code is flashed back. LED turns off after letting the button go.
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  #19  
Old 04-01-2008, 07:20 PM
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Very good..

If there is a CE lamp , then there has to be an offending code...so, I believe your problem is that you are not holding the button long enough..
Try a little longer .....3/4 secs..

Is the CE lamp still ON ? If not , then the code was a temporary/intermittant fault and the DM has cleared itself by driving the car..
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  #20  
Old 04-01-2008, 07:26 PM
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check engine light

Do something easy first. Check that your fuel filler cap is on correctly. If it is not, your check engine light will come on.
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  #21  
Old 04-01-2008, 07:54 PM
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When I had to get the smog done, I took it to the same shop that the previosu owner used to take. I dont trust him at all. Anyway, he spent 5-10 mins near the battery while the car was on and after that the light went away for 2-3 days. He told me it will come back on after few miles and it did. I checked the fuel filler cap, it seems to be fine.

Just to clarify, I have to turn on the engine before I go push down the button right?
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  #22  
Old 04-01-2008, 08:08 PM
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The code retrieve procedure is:

*Key ON...You do not start the engine, you just turn the key to the RUN position.
*Press button and hold for 2-3 secs [ approx]....lamp will light while you hold button, confirming power to LED.
*Release button and wait a few secs.. codes will Flash back on LED . Count the number of blinks.
*Repeat by holding button again for 2-3 secs ...count blinks again. This should be a higher number than the first, as they are in sequence.

When you finally see the original number of blinks reappear , you know the DM has gone through it's entire search cycle and you now have all stored codes. [ there are 50 available codes on that chassis, but you may only have one stored..if you have all 50, burn the car..]
These codes can be erased with another button hold procedure , but we will wait until you get the codes first...if there are any...
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Last edited by Arthur Dalton; 04-01-2008 at 08:18 PM.
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  #23  
Old 04-01-2008, 09:23 PM
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Dalton and everyone, thank you for your patience with me.

I went and tried to get the fault code. I tried several times with varying durations from 2 sec to 10 secs. No luck. On repeated attempts (and some playing with it) and after some time it flashed 13 times. I turned the key off and back on and tried again. No luck. When I started the engine, the CEL is no longer on. It is back to normal behavior. Did I reset it by chance?
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  #24  
Old 04-01-2008, 09:30 PM
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OK

I think you have reset the DM..The reset/clear procedure is to hold the button for 8-10 secs after a flash, so you may have done just that.
My recommend now will be to drive the car and monitor the CE lamp...if it activates again, do the exact code retrieve procedure I posted and get the results back to us.

Did the Smog guy tell you what he found for codes ?????
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  #25  
Old 04-01-2008, 09:46 PM
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Ooops - there's no code 13 on the DM. But the good news is it'll probably come back and you'll get to check it again, or maybe that's the bad news.
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  #26  
Old 04-01-2008, 10:20 PM
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I have seen mention from alldata that 13 is an N59 module fluke error code and does not apply to Diagnostics from DM and is to be disgarded.

You may have a 12 and miscounted...wait for CE return and check as soon as that occurs, if it does.
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  #27  
Old 04-01-2008, 10:31 PM
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I will post as soon as it returns. Thank you all for your patience and suggestions.
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  #28  
Old 07-08-2008, 07:46 PM
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Hello again ....

I got the codes right this time ... 5 & 26

So .. what do they indicate? Also, does any one know a good service station for Mercedes in Fremont, CA? I saw the California thread ...

Thanks,
Kalyan
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  #29  
Old 07-08-2008, 07:56 PM
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Both common codes ..

Do a serch on "EGR " and "Shift Delay"

I have tutorials in there on both..
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  #30  
Old 07-08-2008, 08:08 PM
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Thanks Arthur. Still searching for those tuts.

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