Fan Probe

Fan Assistant keeps your HV battery within optimal temperature range. To achieve this, it's necessary to have a good reading of the cabin air temperature.
The inhaling temperature sensor of the HV battery needs air flowing through it to have a correct reading, so, every 5 minutes, Hybrid Assistant will turn on the fan at minimum speed to update its value.
You can disable this behavior using the Fan probe switch

Fan Assistant

Introducing the new Fan Assistant

The Fan icon is now a 3-state toggle; every tap will rotate between:
OFF - fan controlled by the car
MANUAL - forced ventilation
AUTO - Hybrid Assistant will turn on or off according to temperature

The Fan Assistant can help you keep your HV battery in an optimal temperature range.
If the battery is too hot, the fan will spin to cool it down.
If the battery is cold, and the cabin temperature is hotter, the fan will spin to heat up the battery.
This feature is primarily meant to be used in really cold climate areas, where a pre-ignition heater is installed in the car.

Warning: the fan control feature is not approved or validated by Toyota. Hybrid Assistant and its development team can't be held responsible for any inconvenience that may related to its usage or misusage. Use it only with high quality OBD adapters and at your own risk.

Auto Fan

HV cooling fan can be automatically controlled by Hybrid Assistant
Here's the effect of setting fan activation at 36.
Fan will start if temperature is 36 or higher, and will stop at 2 degrees below the specified level (34 in this case)

Option is available in the settings screen