HI! Silver Prius '06 ~ 5.5K miles. About a month ago I noticed a funny "chirping" noise when then brake pedal is depressed. Have not noticed this noise at all while driving. This morning while the car was not moving I shifted to D then to N then to R and back to Park. The noise is intermittenly present in any "gear" and "park" only when the brake pedal is depressed. Over the course of almost 4 minutes, the "chirping" sound occures maybe 15 to 20 times. All the other normal "noises" discribed in the forum about brake noise I can hear. This noise is much much louder than any of those. Have not contacted dealer yet but I recorded the series of noises on my Ipod so that I can have the dealer listen if it didn't occur while there. It doesn't happen everytime but seems to be happening more frequently recently! Any comments appreciated! Thanks!