A Check Control message is displayed in the following situations
In this case:
System limits
The system does not function properly if a reset has not been carried out, e.g., a flat tire is reported though tire inflation pressures are correct.
The tire inflation pressure depends on the tire's temperature. Driving or exposure to the sun will increase the tire's temperature, thus increasing the tire inflation pressure. The tire inflation pressure is reduced when the tire temperature falls again. These circumstances may cause a warning when temperatures fall very sharply.
BMW X3 Owners Manual > Front-end collision warning
with braking function: Warning with braking function
Display
If a collision with a recognized vehicle is imminent
a warning symbol appears in the instrument
cluster and in the Head-Up Display.
The vehicle lights up red:
prewarning.
Brake and increase distance.
The vehicle flashes red and an
acoustic signal sounds: acute warning.
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