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How to Troubleshoot an LTE Dongle Connection

How to troubleshoot the status of a dongle.

  • Check if the LTE dongle is properly connected, fully plugged into the USB port of the cable connected to the MirrorEye DVR.  Ensure the cable is not damaged, bundled and secured to tightly with a zip tie, and has secure connection to the DVR. 
    1. Blinking Blue Light, then it is properly transmitting data on the G4 network respectively. **SEE STATUS TABLE BELOW
    2. If RED led is present, disconnect the dongle and remove back cover, inspect the inserted SIM card and verify it is fully seated in the SIM tray, replaced cover. 
    3. Reconnect the Dongle and turn the truck ignition on, does the Dongle connect to the cellular network?  Blue LED?  If RED led is still present, is the truck in open air space with good cellular coverage?  ** May need to move the truck out of truck bay space ** 
    4. Verify the DVR is at the lates firmware version by checking in MSA
    5. Update if needed following the how to update the DVR SOP
    6. If the dongle is replaced the new hardware will auto report and update to the portal with DVR firmware 2.4.3
    7. After the DVR firmware is validated to the latest version and the dongle has a blue light, press the trigger button to test.  The button LED should flash for 2 mins then return to solid green. 
    8. Navigate to the video service in MSA and verify the button press video request processes and video uploads to the cloud. 
  • Ensure the truck is in a good cellular connection area, some building structures can block or reduce cellular connections.   
  • If the dongle has a Blue LED light and video still does not upload to the watch video service (video portal), Open a ticket with Stoneridge have the Dongle IMEI and SIM numbers available to validate that it is registered on AT&T network
After the dongle is correctly powered, the indicator light will be on. Different colors indicate the different working status of the dongle, as shown in the following table.
    Status Description
    No Light Airplane / Standby Mode
    Solid Red Light Booting up / Searching for a network / Malfunction
    Solid Blue Light Registered on 4G network
    Blinking Blue Light Transmitting data on 4G network

     

    Warranty tag the removed device as Stoneridge may request to be returned for lab analysis. 

     

    Rel: xx/xx    Rev: 5/28/2026