Reversing volume

[Wight Arnage]

Good Morning,
I have a newly acquired ML350 Sport with no service history, which I am gradually rectifying. The outstanding problem is the volume of the beeps when reversing - I can hardly hear them.
Suggestions welcome - fit different speakers? Reset something on the dash buttons? Consult autoelectrician?
Many thanks,
David.

[Ron240]

I dont know about the settings on your specific model, but the settings on my 2020 and 2021 cars with MBUX allow adjustment for volume and pitch of the reversing sensors.
Default setting on mine was full which I found too loud so I lowered it down a bit.