You cannot turn off the digital display screen... suggest a bit of blue tac and paper if it annoys you. You can turn off the audio 'beeper' alarms that alert when too close to a nearly object, crossing a white centre line in road or approaching car in front at too high a speed. Button for same is down on lower right hand side of dash. You can also disable the feature that turns off the engine when stationary in traffic... you might find that a bit unnerving at first. The button for this is on left near the gear stick.
Enjoy!