What to Do When an ELD Malfunctions: The 24-Hour Notice, Seven-Day Records, Paper Logs, and Eight-Day Deadline

An electronic logging device (ELD) reports an error on the road, stops recording accurately, or cannot display or transfer data at an inspection. A driver's first instinct may be to restart it repeatedly and keep going. First establish what failed, when it began affecting the records, and how each subsequent step will be documented.

Check the device message and onboard instructions. The Federal Motor Carrier Safety Administration (FMCSA) distinguishes an ELD malfunction from a data diagnostic event. Troubleshoot a diagnostic event as the fleet and ELD provider recommend. The malfunction procedure under 49 CFR § 395.34 applies when the device can no longer accurately record or provide required data. A lost signal, a slow app or an isolated diagnostic message alone does not establish a malfunction (“49 CFR § 395.34”).

Once a malfunction is confirmed, note it and notify the motor carrier in writing within 24 hours. No particular form is required, but keep a record of the notification. Include the driver's name, vehicle or device ID, time and place of discovery, device message, records affected and steps already taken. A phone call alone may be hard to date later. Follow it with a written notice you can retain (“49 CFR § 395.34”).

Next, check the records of duty status (RODS). The rule covers the current 24-hour period and the previous seven consecutive days. It does not require every driver to rewrite all eight days by hand. Records already in the driver's possession or retrievable from the device need not be reconstructed. FMCSA accepts a printout or electronic PDF of retrievable records for the previous seven days. Reconstruct the portions the driver does not have and the device cannot supply (“ELD Malfunctions and Data Diagnostic Events FAQs”).

From the point the malfunction affects recording, use a graph-grid paper log under 49 CFR § 395.8 to prepare manual RODS until the ELD is serviced and brought back into compliance. Switching to paper changes how hours are recorded. It does not reset hours-of-service (HOS) limits or create driving time. Record driving, on-duty and rest periods and remarks as they happen rather than recreating the day from memory.

During a roadside inspection, be ready to show the manual records to an authorized safety official. If the ELD starts working again, keep the records for the gap. FMCSA says drivers who have reconstructed records should provide both the reconstructed RODS and the ELD data. Keep the notice, paper logs, printouts or PDFs and the time the device resumed working together (“ELD Malfunctions and Data Diagnostic Events FAQs”).

The carrier must repair, replace or service the device. Its eight-day period starts when the carrier discovers the malfunction or receives the driver's notice, whichever is earlier. It does not start when a work order is opened, the device is shipped back or the provider answers an email. Record the start time and person responsible that day so the office follows up on the driver's report (“49 CFR § 395.34”).

If eight days will not be enough, the carrier should request an extension within five days after receiving the driver's malfunction notice. Contact the FMCSA Division Administrator in the state of the carrier's principal place of business. The signed request should give the representative's name, address and phone number; make, model and serial number of each device; reported date and location; good-faith efforts already made; and why more time is necessary. FMCSA's support page also calls for the legal name, principal business address and USDOT number. FMCSA decides whether to approve an extension and for how long. Filing does not grant one (“ELD Support”; “49 CFR § 395.34”).

After service, do not discontinue paper logs simply because someone says the system is online. Confirm that the device records, displays and provides data as required, then document the restoration date and result. If the same issue affects several vehicles, identify each device separately in the request and fleet records. Tell each driver exactly when to resume electronic logging so no time disappears between the paper and electronic records.

Keep the onboard ELD information packet where the driver can reach it. Under 49 CFR § 395.22, it includes the user manual, data transfer instructions, malfunction reporting and recordkeeping instructions, and enough blank graph-grid sheets for at least eight days. Materials kept only at the office or on the dispatcher's phone do not help the driver in the cab (“What Electronic Logging Device (ELD) User Documentation Must Be Onboard”).

Finally, check FMCSA's Registered ELDs and Revoked ELDs lists. The 24-hour notice and eight-day service period concern an ordinary malfunction. Revocation means FMCSA removed that model from the registered list; follow the specific notice's deadlines for discontinuing use and replacement. Do not assume the ordinary eight-day rule applies. Manufacturers self-certify listed devices; FMCSA does not endorse individual products. Drivers handle notices and logs; carriers track the start date, service and official lists (“ELD List”; “ELD Functions FAQs”).

Disclaimer: This article uses public Title 49 CFR, FMCSA and FMCSA ELD portal materials as of July 21, 2026. It provides general information, not professional legal, regulatory, hours-of-service, enforcement or case-specific compliance advice. Malfunction classifications, logging methods, repair deadlines, extension procedures, device lists and enforcement practices may change. Consult the current eCFR, FMCSA, device instructions and inspecting agency's official records. Fleet operations, device models, faults and available logs differ; assess the documents in hand. Contact FMCSA, the provider or a qualified professional about recurring failures, extension requests, roadside disputes or major compliance risks. The author and publisher accept no liability for losses arising from reliance on this article.

Electronic Code of Federal Regulations. “49 CFR § 395.34: ELD Malfunctions and Data Diagnostic Events.” eCFR, https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-395/subpart-B/section-395.34. Accessed 21 July 2026.

Electronic Code of Federal Regulations. “49 CFR § 395.22: Motor Carrier Responsibilities—In General.” eCFR, https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-395/subpart-B/section-395.22. Accessed 21 July 2026.

Electronic Code of Federal Regulations. “49 CFR § 395.8: Driver’s Record of Duty Status.” eCFR, https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-395/subpart-A/section-395.8. Accessed 21 July 2026.

Electronic Code of Federal Regulations. “Appendix A to Subpart B of Part 395—Functional Specifications for All Electronic Logging Devices (ELDs).” eCFR, https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-395/subpart-B/appendix-Appendix%20A%20to%20Subpart%20B%20of%20Part%20395. Accessed 21 July 2026.

Federal Motor Carrier Safety Administration. “ELD Malfunctions and Data Diagnostic Events FAQs.” U.S. Department of Transportation, 10 Mar. 2022, https://www.fmcsa.dot.gov/regulations/hours-service/elds/eld-malfunctions-and-data-diagnostic-events-faqs. Accessed 21 July 2026.

Federal Motor Carrier Safety Administration. “What Electronic Logging Device (ELD) User Documentation Must Be Onboard a Driver’s Commercial Motor Vehicle?” U.S. Department of Transportation, https://www.fmcsa.dot.gov/hours-service/elds/what-electronic-logging-device-eld-user-documentation-must-be-onboard-drivers. Accessed 21 July 2026.

Federal Motor Carrier Safety Administration. “ELD Support.” U.S. Department of Transportation, https://eld.fmcsa.dot.gov/support. Accessed 21 July 2026.

Federal Motor Carrier Safety Administration. “ELD Functions FAQs.” U.S. Department of Transportation, 10 Mar. 2022, https://www.fmcsa.dot.gov/hours-service/elds/eld-functions-faqs. Accessed 21 July 2026.

Federal Motor Carrier Safety Administration. “ELD List.” U.S. Department of Transportation, https://eld.fmcsa.dot.gov/List. Accessed 21 July 2026.