Bosch s/s f/f keeps beeping randomly how do I fix this?

model is kan58a40au/01.

It has just tonight started making random beeping noises. Similar to the noise that it makes when the door has been left open. The doors are definitely shut and there are no unusual lights showing up on the display. They will start and then stop and happen at random times. I wondered if this ws because of the earhtquakes we have been having maybe rocking it about a bit, but it has only just started today and we haven't had any large aftershocks for about 4 weeks...not sure what is causing it.