gollard

open her up - highly doubt that the ECU cannot be opened without damaging the internals. But aviod force...
The fact that MB pinpointed directly at loose bat cable as root cause of ECU failure makes me believe it is a common problem. I willing to bet that the damage is within ECU.

rarfinancial

The ESP inop light (triangle) is not what I am talking about . On the disply it spells out " ESP INOPROTIVE READ user MANUAL" in red.
What does the ESP, radiator fan, temp and no start have to do with one another and why does the key not lock or unlock the doors or is not active when car is in no start mode? the key remote is non opp then works with no apparent patterns..

gollard

It all goes thru the ECU. The ECU is the central brain that sends the info out to the instrument cluster, fans etc. etc.. Key, engine start is also handeled inside of ECU for theft protection. I assume the key, keyless go is checking VIN data stored in ECU hence the no start

rarfinancial

I have opened it up before and no how to do the job. WHEN IS A TUNNER GOING TO COME UP WITH A OBD TUNING TOOL. I WILL HELP WITH FINANCING

nick 55

Thanks for clarifying. That tells me something has corrupted the ME coding. Those symptoms are all things that occur when programming the ME via SDS. Sounds like either the ME has not been SCN coded for the vehicle correctly or there is a corrupt software file.

Nick

gollard

rarfinancial -
It's only corrupt when warm - correct? WHen everything is cold - car runs fine - right?

rarfinancial

What is SDS? (Strar system)
What is SCN? ( serial #)
You say software file.. then a complete reflash and recoding should fix the problem? How couls this happen? Now we are getting some action.
Oh and when you say ME is that the same as the ECU? Man all these damn codes..

gollard

unless I misunderstood rarfinancial, the software is only corrupting when the car is warm. Once software is corrupted it can't uncorrupt itself by cooling down?

nick 55

Sorry, technical terms. SDS is the Star Diagnosis System(star machine). SCN coding refers to individualized codes transmitted to the dealer via a secure website for a specific vehicle. Most ME(motor electronics) control units in MB vehicles as of MY 04 require SCN coding to even start the car after loading new software. Basically, we "Flash" the module, then have to code the vehicle information into the ME. The only thing that confuses me is that it happens when the car has been running for 10 minutes. SCN coding is definate, if it's not done, the car will not start. Try keeping a small fan on the module when running the car, and attempt to duplicate the complaint. If it still acts up, I would definately reflash the ME, re SCN code it and see what happens. But I work at a dealer, and I don't have a way to save your tune and reinstall it after I'm done with the programming. My hunch is that the software has a problem where it doesn't communicate properly with the necessary MB code for the antitheft portion of the ME.

Nick

nick 55

This is why I(at the dealer) use a very high quality battery charger when programming any part of any car. Extremes in voltage can honestly render an ECU more of a paperweight(albeit a very expensive one) than a functioning control unit.

Nick

rarfinancial

That makes a lot of sence to me Because it seems as if the key is not programmed at times. I just remembered that when my key is in the same pocket as my cell phone I can not unlock the doors by pulling on the handel also about a month ago I lost all my phone book in the car and can not use car to dial or answer phone. blue tooth still works but no phone functions. Should I have the dealer recode the ECU? I have my tunes save on a laptop.

nick 55

By tunes, you mean your Engine Management tunes, right? I would have them program the ME, and see what happens. If it still happens, I wouldn't rule out the control unit being fried completely, but that would be a start. If this works, I take Paypal, or, cash on your way east to Maryland.

Nick

For the Bluetooth, disconnect the puck, delete the MBphonesystem from the phone's bluetooth profiles, and re-pair the phone to the car.

gollard

I don' understand what the logic behind the idea of reprogramming the software is when software runs fine when cold

nick 55

The ME has fuel maps that are different at different coolant temps. What's to say that the temperature input to the ME doesn't affect other things also or that there is a glitch that causes it to affect other sections of the ME.

Nick

rarfinancial

You got it I won't be making it to Maryland on the 15th. No Supercharger, no longtubes and Now no ECU..

The Godfather

It's the ram and your video card. Add more ram and get a good video card and your FPS will be good to go.

gollard

but at least the doors should open. Maps change while running as well, car would then freak out while running as well which if I understand OP correctly is not the case

rarfinancial

What did I miss

nick 55

I think the Godfather got his posts mixed up with his PCworld.org forums.

Nick

Almo

RENNSTAGE

its your flux capacitor


worst comes to worst, add more vacuum tubes

jrcart

Looks like you better change the name on your sig pic from "THE BEAST" to something like " THE LEAST" or maybe " THE SEIZED" or my favorite, "THE DECEASED"

rarfinancial

OK. I have figured it out and the car runs perfect now.
It was the CHROME MUFFLER BEARINGS they were creating to much heat at plus 5g's, a little mothers metal polished and all is well now...

Zeppelin

If the problem happens only when hot then pull the ECU when hot and put it in the freezer for 20 minutes or so while keeping the hood shut and everything else warm. Put the ECU back in to see if it now works.

You could also put the ECU in a 150 degree oven for 20 minutes or so an put it in a cold car.

If the problem is the ECU it will show itself with one of these tests.

sack5000

Should we give the Godfather $1,000 to get rid of his sig, might be worth the $$??