Switch-on conditions and setpoint values
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 following evaluation criteria are used for the air flap control:
- Coolant temperature (coolant-temperature sensor and temperature sensor at the radiator outlet, if present)
- Gearbox oil temperature
- Engine oil temperature
- Current supply to the characteristic map thermostat (if present)
- Load signal
- Engine speed
- Driving speed
- Speed of the electric fan
- Trailer detection
Observe the following nominal values for the radiator shutter drive:
| Variable | Value |
|---|---|
| Voltage range | 9 to 16 volts |
| Frequency pulse width modulation | 180 to 220 Hz |
| Maximum power consumption | 2.2 A |
| Temperature range | -40 to 120 deg C |