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  1. #1
    Bobtail Member
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    EOBR discrepancy ECM vs ODOMETER

    Apparently my ecm was flashed in 2008 on my current freightliner. The ecm and eobr are reporting 200k miles while my odometer is reporting 463k miles.



    Now if DOT prints my logs the mileage wont be the same. Is this a false log issue? Or should I not worry about it because it is accurately tracking miles forward?

  2. #2
    Road Train Member Jfaulk99's Avatar
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    Don't sweat it. It wasn't flashed it was most likely replaced because the original one failed.

  3. #3
    Road Train Member canuck in da truck's Avatar
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    as long as your logs match your odometer--you should be fine
    when you say eobr--you are meaning the ecm?
    quite often the ecm and odometer dont match cause of the speedo head being changed or a ecm being changed

  4. #4
    Road Train Member Cowpie1's Avatar
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    The EOBR would show the actual miles traveled anyway, so them matching exactly to the total miles on an ECM or Odometer is not really an issue. EOBR's don't care whether you have a million miles on a truck or 5000. It is the distance, locations, and times that is tracked. And that is done not on total miles on the truck, but miles traveled each duty cycle. It ticks those miles off each day. Not a final mileage minus a beginning milege off the ECM or odometer. You could start your duty day, replace the ECM mid day, and still drive an hour or two the same day and the EOBR will be show total miles traveled that day.

    I guess there could be some issues with some brand names of EOBR's. Qualcomm doesn't rely on total miles values. Besides, on paper logs, I never had odometer readings. I only had total miles traveled. I, personally, would put in the miles traveled in each driving block, though that was not required. I never had actual odometer readings on my paper logs for almost 30 years. Never had an issue with DOT. Now that I am on EOBR, seems like a similar non issue.

  5. #5
    Bobtail Member
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    Quote Originally Posted by canuck in da truck View Post
    as long as your logs match your odometer--you should be fine
    when you say eobr--you are meaning the ecm?
    quite often the ecm and odometer dont match cause of the speedo head being changed or a ecm being changed
    Eobr=e-logs which read from the ecm....so my logs don't match odometer.

    Im only concerned because I read that....if the eobr collects mileage from an internal source on the cmv it must be accurate to the odometer.

    Another grey area...it says "accurate"....does that mean match? Or just working correctly?

  6. #6
    Road Train Member canuck in da truck's Avatar
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    hmmm thats a real interesting question--normally i would say go with the odometer(i havnt worked with e logs)--but when you have the mileage right there from the ecm that you could use-it does give options
    lots of odometers get pretty screwy--i have had them crank up miles as soon as the key was turned on----hmmm as k your safety dept how they want it done??--or if on your own-do what ever is best for you---wouldnt using the eobr miles be easier?

  7. #7
    Bobtail Member
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    I just read on the fmcsa site...it now says "distance traveled" must be accurate...not mileage. I must have been reading an older version. So im good then...thx everyone

  8. #8
    Road Train Member Jfaulk99's Avatar
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    I think the easiest way to fix it would be to take the EOBR and smash it with a hammer.

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  10. #9
    Road Train Member Cowpie1's Avatar
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    With the current reliance on global positioning satellites, the distance on the odometer really is not an issue. For instance, many fleets now calculate their fuel tax distances based on satellite and never even have the driver record odometer for state crossings and such like was done before. And your odometer doesn't know when you crossed a state line, so using the Odometer or ECM must not be an issue. Seems like that is what is going on with EOBR's such as the one from Qualcomm. It tracks mileages based on GPS and not off of odometer or ECM. There is no need to report to anyone if the ECM is replaced in my truck.

  11. #10
    Crusty Commando-Pete 07-379Pete's Avatar
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    Quote Originally Posted by Jfaulk99 View Post
    I think the easiest way to fix it would be to take the EOBR and smash it with a hammer.
    Or quit and go to work for a carrier that dont use that crap.

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