It depends where you are. In many countries you cannot legally turn off the pedestrian warning sound - it is after all there for the benefit of pedestrians, and not for the benefit of the driver.
If you are in a territory where it is a mandatory requirement, there will be no option within Idrive to turn it off. It should still be possible to turn it off by coding, but you need to bear in mind that this may have insurance implications in some countries.
