I very much appreciate this Forum and the support from members! I searched and found what would likely be something wrong with the Brake Vacuum Booster on my 2015 Prius V with 73k miles. In addition to the normal noise, but with a frequency of about every 15 seconds, the brakes seem more sensitive when applying quick braking, but also when coming to a slow stop with light braking you can feel the brakes (and car) pulsing. I am the second owner, and as best I can tell the car has never had any work done on the brakes. Is this a troubleshoot/probable repair for only at a dealer, or should any place that works on Toyotas be able to correctly handle this? Also does anyone have recent history or an estimate for what the typical repair would cost?