Users can choose either Diagnostic (supported devices only) or Calculated as the engine hours data source. This allows you to easily identify which data source is in use, control where your data is coming from, and ensure complete transparency and confidence in the information provided.
The system automatically prioritizes diagnostic engine hours but seamlessly falls back to calculated hours when diagnostic data is unavailable.
Supported Devices
The following devices support Diagnostic Engine Hours:
Selecting an Engine Hours Data Source
Users can choose Diagnostic or Calculated as the engine hours data source for individual vehicles within the Edit Vehicle drawer, accessible from a vehicle’s Vehicle Card on the Map page. Each option displays the current engine hours reading, providing full visibility into the data before a selection is made.
Note: If a user changes the data source, that does not impact any historical data contained in applicable reports; however, a user repeatedly changing the data source within a short amount of time may lead to data inaccuracies in reports.
Understanding the Data Sources
Please review the table below for descriptions of the Diagnostic and Calculated engine hours data sources.
Source | Description | Waypoint Eligible |
Diagnostic | Hours recorded directly by the engine’s control module (ECM/ECU), representing the engine’s true runtime. | ❌ |
Calculated | Calculated hours based on total engine-on time since installation. | ✅ |
How to Select an Engine Hours Data Source
Note: You can also make a data source selection from the Edit drawer of a vehicle from the Admin: Vehicles tab (permissions required).
From the Map page, locate the vehicle you would like to manage using the Search field, Vehicles List, or by clicking on the vehicle directly on the Map.
The Vehicle Card opens on the right-hand side of the screen.
Click Edit from the Vehicle Card Header.
The Edit vehicle drawer opens.
Scroll down to the Mileage & Engine Hours section.
Under “Engine Hours Data Source”, make your selection by clicking the button next to Diagnostic Engine Hours or Calculated Engine Hours.
Click Save changes.
A pop-up appears at the top right corner of the screen to confirm that your change was saved successfully.
Entering an Engine Hours Waypoint
If you have selected Calculated Engine Hours as the vehicle’s engine hours data source, you can add a waypoint if you believe the engine hours reading is inaccurate. Adding a waypoint adjusts the baseline, and the system will continue to add run time afterward according to your selected data source.
How to Enter an Engine Hours Waypoint
Note: You can also make a data source selection from the Edit drawer of a vehicle from the Admin: Vehicles tab (permissions required).
From the Map page, locate the vehicle you would like to manage using the Search field, Vehicles List, or by clicking on the vehicle directly on the Map.
The Vehicle Card opens on the right-hand side of the screen.
Click Edit from the Vehicle Card Header.
The Edit vehicle drawer opens.
Scroll down to the Mileage & Engine Hours section, then enter the waypoint under “Engine Hours.”
Note: Calculated engine hours must be selected to enter a waypoint. Waypoints cannot be entered if your data source is Diagnostic Engine Hours; the Engine Hours field will appear greyed out.
Click Save changes.
A pop-up appears at the top right corner of the screen to confirm that your change was saved successfully.