We want to proactively inform you of two separate issues identified in firmware version 5.16.16 that may result in an increase in Harsh Acceleration (HA) and Harsh Braking (HB) events on your telematics reports.
Who is most at risk
Vehicles most likely to be affected are those running older or multi-source CAN scripts. If your fleet has already been updated to the latest CAN script, the risk of impact is reduced.
Issue 1 – Incorrect speed reading during CAN signal loss
When a vehicle's CAN bus signal drops out, certain device scripts are incorrectly reporting a speed of zero rather than recognizing the absence of data. The device interprets this as an actual speed change, triggering false HA/HB events.
- This will be resolved in the upcoming firmware release (5.16.X), where the device will correctly treat a zero reading during signal loss as no data, eliminating these false events.
Issue 2 – Driver scoring correction for multi-source CAN configurations
A long-standing issue in earlier firmware versions meant that devices running multi-source CAN scripts were not accurately detecting and scoring driver behavior events. Firmware 5.16.16 includes a correction to this logic.
- Clients using multi-source CAN configurations may notice an increase in HA/HB events as a result — this reflects more accurate scoring, not a deterioration in driver behavior.
Recommended mitigation
We recommend upgrading to the latest CAN script available. Please check with your configuration team before doing so, as newer scripts may require changes to associated configuration parameters.
If you would like help identifying whether your vehicles may be affected, please reach out to our support team.