BMW F30/F31 iDrive and display faults
F30 iDrive gets stuck on the BMW logo at start-up. What fixes it?
The likely cause is software stuck in the iDrive unit. A workshop reloads the software to the car. A USB stick can only update the media side, so it is usually not enough.
F31 iDrive and radio switch off and restart by themselves. What to do?
The basic radio's software can become corrupted, especially in cars without navigation built before July 2014. A software update at a workshop helps in that case. If that does not help, the iDrive unit has to be replaced.
Why does the iDrive clock not change or the trip computer data go missing?
The cause can be outdated software, in which case a software update of the whole car is needed. A partial update alone can mix up the menus and change the language, so have the full update done at once at a workshop.
Why is the F30 centre display dark even though the radio works?
The fault is most likely in the wiring or connectors that carry the picture from the head unit to the display. The symptom shows especially when the car is warm.