alarm chime in reverse

[crb]

Hi Guys,

Well I just picked up my brand new Focus Zetec which is fantastic.

The only thing I cannot seem to figure out is when I put it into reverse gear (manual) a quite loud alarm chimes on and off until I take it out of reverse?

There are no other warning lights and nothing in the manual and it just seems a little too loud for a warning, but you can't hear it externally.

So before I ring up the dealer and look like a goose is this normal?? Or have I missed something?

Thanks for your help.