Grga Hi, I consulted Hiworld and his response was
Steps: connect the stock host and let the sensor beep normally, then unplug the stock host and test if the sensor makes a sound.
If there is no sound, then the beeps are relying on the factory main unit to make the beeps, then a CANBUS box would be needed to make the sound, but Hiworld does not currently have a Mercedes-Benz CANBUS box that can make the beeps!
If there is sound, the beeps are coming from the car's instrumentation and installing a DUDU device or CANBUS box will not affect it!