HiFi/Navigation: MOST- failure? Kaltes Wetter?

[Ellemeet]

Sorry but my German is not sufficient to write this in German.

Sometimes I have a problem that my central display does not start up. I will be driving for 5 minutes when gradually the display will start functioning and the radio will start playing. however bluetooth and or idrive will not function. I need to stop and switch of the car for 5 minutes. Usually this fixes th problem.

If that does not work then disconnecting the battery will solve the problem.

This seems a difficult problem to tackle because the diagnostics will sense a most failure and thus will say that the whole most ring has a failure.

It does seem to be weather related .. Cold .. ?humid? ..

Has anybody had something similar and if so .. What was the solution?

My vin is dt20076 and the car is equipped with

Hifi pro
Bluetooth
Rear entertainment
Cd changer
Dvd changer
Dension gateway 500