If a GPS tracking device in a vehicle has not reported or sent data in over 7 days (168 hours), it is considered a non-reporting unit (NRU).
The device remains active for 4 days of non-movement and sends out daily updates. After 4 days, the device enters sleep mode and can only be woken by a power or ignition trigger.
If a vehicle has a device installed that kills power to peripheral electrical devices when the vehicle is off, such as a charge guard or surge protector, the hibernating device will not send wake-up data.
A GPS tracking device can go offline for the following reasons:
- The vehicle might be in the shop or garage.
- The vehicle might be operating outside of cellular coverage.
- There could be a hardware problem with the wiring in the vehicle or asset that is providing power to the device.
- The fuse in the device could be blown.
- The antenna could have failed or there could be a loose connection.
- The device might be locked up for some reason and need to be reset or replaced.
- The vehicle might be seasonal and not in use at the time. In this case, the battery could have been removed or the unit was disconnected intentionally.
- The vehicle might be no longer in use because it was involved in a collision and not operational, or the vehicle was sold.
There are several other possible reasons a device could not be reporting that are dependent upon the type of equipment and the function or nature of its use.
To identify if a vehicle is possibly NRU, check the state of the vehicle in the Vehicle Status List or on Live Map. Once any non-reporting units are identified, the first question to ask is: Should this be reporting or not?
If it should be working then someone needs to diagnose and resolve the issue. Contact customer support to help you troubleshoot.