Sportback child safety lock
First post so be gentle with me please. I have just taken delivery of a 1.6 tdi Sportback SE, and it looks like there is no way to activate the rear door child locks manually. The rear doors have a solid plastic blanking grommet over the hole (signified with a child lock symbol) where they would normally be turned to activate the locks, this can be removed but seems to have nothing inside to turn with the key to activate. There is another hole on the end of the door (not sure what this does) but it certainly doesn't activate the locks
I know I should take it to the dealer, but it'll probably be a week before I can get the time to take it to my nearest dealer and I don't wish to rely on the electric ones in the drivers door as I'm worried I'll accidentally switch them off with my over inquisitive 2y.o in the back.
Any help gratefully received.