No codes, Stutter/shudder sound when foot on brake (video of noise)

Wow that's interesting in Raleigh North Carolina so are they there looks like they're only replacing one part in this two-part system I'd have to do more diagnostics personally. You say the brake pedal feels funny so when this noise is happening do your brakes feel very hard pedal and very little stopping until you get like two feet on the brakes type of thing? Generally in this car you're going to want to be replacing both of those 748 items or thereabouts so about $1,500 in parts The thousand labor whatever seems a little bit high but that's just me I don't think book well I don't want to say what I think about the book I'm not sure what the book pays for this these two pieces are not that bad to get at as Prius go that noise is very familiar to me from my generation too that little pump that's below and behind your brake reservoir It's a little funny looking thing I have break actuator problems right now in an '08 and that thing hammers like a radiator in an old house with a boiler and it sounds just like your car right now but I don't think the generation 3 has that I'll call it a booster pump it seems to be for the rear brakes or something I haven't really delved into it but I know that my brake actuator is bad on the generation too and when that's fixed it will probably stop making that other pump go crazy that's my guess.

 

Probably try to bleed the brakes and see if anything improves, but it sure sounds like you're on your way to a new brake booster

 

Don't let that service center work on your car... Find someone who actually has basic competence to diagnose and repair. These jokers are just going to charge you a fortune replacing the most expensive parts and based on what they're saying it's just them guessing, not diagnosing.