Parking sensor volume, is it adjustable

[The-Acre]

My rear sensors were fitted from new, I have the info with the documents that came with the car, it's fitted with Denso sensors.   The problem is the volume, it's so low I have to really listen hard for it.  Today when I opened the boot to do some checking is was really loud, but in the boot!  Why would there be a bleeper in the boot?  I checked all sensors and they all work, although the two centre ones give a different tone to the outer ones.  Not really a big deal but it would be nice to have them working properly, especially as I'll be parking it in central London soon! 

So does anyone know if they're adjustable?

[katana92_uk]

my 2004 facelift, right side of steering column under dash there are 2 knobs, one to adjust volume and second for keyless enable/disable.

under dash above accelerator.

My old Audi sensors stopped working and It was much cheaper for me to just get reverse camera + screen fitted. I think I paid about £100 inc parts labour and that was 4 years ago.

consider getting reverse cam, really helps. 

[katana92_uk]

[The-Acre]

I thought the one on the right was for the alarm set beeper?  I'm going outside now to have another look...

[The-Acre]

Had a tweek of the knob but no volume, although no LS that I've ever had beeps when I lock it regardless of what I've tried. Back to the drawing board.  The sensors seem to work OK but I need to be reversing while I'm sitting in the boot to get any real benefit from them!