Outside temperature value suppression
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
The computation model in the instrument cluster compensates for effect that the residual heat from the engine compartment has on the outside temperature value. The increase in temperature is delayed. The input variables for the calculation model are:
- Driving speed
- Coolant temperature
- Engine status on or off
- Ambient temperature
A drop in the ambient temperature is adopted and not damped. The engine and the body cannot be colder than the ambient temperature.
NOTE:
Under certain driving conditions, the display deviates from the real value due to damping action. In the event of a customer complaint, this behavior must be explained as the state of the art.
Example for ambient temperature compensation:
Motorway driving followed by urban traffic, then stationary traffic
| Item | Explanation |
|---|---|
| 1 | Motorway driving, 20 minutes, driving speed greater than 80 km/h |
| 2 | Urban traffic, 20 minutes, driving speed greater than 40 km/h |
| 3 | Traffic jam, 20 minutes, driving speed 0 km/h |
| 4 | Measured value of the outside temperature sensor |
| 5 | Outside temperature display in the instrument panel |
| 6 | Real ambient temperature |