Contax G1 lens help

ok can any one hear help me with this problem.
i have a contax g1 and it has been fine up until this morning when the usally quite autofocus started to make a odd sound while focusing. has this happen to any one else? if so what can i do to stop it. some one i know suggested that it might be low on battery power but its dosent say that it is.

thanks

From what I have read about the Contax is that they are notorious for making noise!

do you mean that they are a gernraly noisy camera
or that they are a unriliable camera

Generally noisy