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Check Your ELD Device For These Frequently Reported Issues

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Check Your ELD Device For These Frequently Reported Issues

This information was released by the FMCSA. Below are some of the issues that FMCSA has encountered due to improperly set up devices. Any of these issues may result in the device being reported, investigated, and, when necessary, removed from the list of registered, self-certified devices.


Erroneous Fields In ELD Output File

The ELD rule lists the fields required in an ELD output file and the acceptable ranges for these values. Files missing required fields, or containing fields with invalid values, will not be accepted by the Web Service or eRODS, and will not be viewable to the safety official.

Issues we are seeing with invalid ELD output files fall into the following categories:

  • Invalid field lengths (e.g., CMV VIN, Shipping Document Number, Trailer Number)
  • Field values outside valid range (e.g., Elapsed Engine Hours, Accumulated Vehicle Miles)
  • Missing required fields (e.g., Event Sequence ID Number, CMV Order Number, Last Name, Carrier Name)
    Note: In the near future, FMCSA will accept files that are transferred without a DOT number, to accommodate intrastate carriers, who do not have assigned US DOT numbers.
  • Incorrect line and file data check values
  • Invalid characters
  • Invalid dates, times, or numbers

All of the above issues are checked when an ELD output file is run through FMCSA’s File Validator.

Are you dealing with a DOT safety audit right now? Did you receive a violation? We can help. 


File Contains Invalid Delimiters

The ELD rule specifies that fields must be separated by commas and that lines must be separated by carriage returns (<CR>). If your ELD output file has a value that has a comma or <CR> in it, the rule requires that these be replaced with a semi-colon.


Device Is Not Pre-Configured With The Web Service End Points Or FMCSA Email Address

For the telematics data transfer option, the ELD must be able to transfer an ELD file to the Web Service—this includes both the web services and email transfer methods. The ELD rule requires that all devices be pre-configured with this information (see,, and

An ELD should never send an email directly to a safety official, and a driver or motor carrier should never have to request the email address or end points from FMCSA or a safety official.


ELD Support System Is Not Offering a Complete Set of the Data Transfer Option

While motor carriers are not required to use an ELD support system, any system they use must support data transfer through either the telematics (both web services and email) or local transfer (both USB and Bluetooth) options (4.9.2).


Device Not Able To Send Files With 30+ Days Of RODS

The ELD rule requires ELDs to be able to send records for the current 24-hour period and the previous consecutive 7 days for review during a roadside inspection. An ELD must also produce a data file or a series of data files of ELD records for a subset of its drivers, a subset of its vehicles, and for a subset of the 6-month record retention period, to be specified by the safety official (see 4.9.2(b))—this includes files with 30 days’ worth of RODS. The device user manual should provide instructions on how the driver or carrier can specify the time period for the file being transferred.


Event Times Provided Incorrectly

While date and time are recorded in UTC, in the ELD output file they must be provided in the time zone in effect at the driver’s home terminal (7.8, 7.40). If these times are provided in UTC, this will result in the incorrect time displaying for the safety official. You can test this by viewing the safety official view of your ELD output files that you have successfully run through the File Validator, or for test files successfully submitted to the Web Services test environment.

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04 Apr, 18

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