Here's a picture of a $2700 part for a 2010 Prius: You can get a replacement transmission for about $1200, a remanufactured traction battery for $1875. This is your brake master cylinder/ABS unit. At the end of March, on a Saturday afternoon, my brake booster pump began making a terrible squealing sound when I tried to move my Prius. It had been perfectly fine earlier in the day. I had just passed 50,000 miles. The dashboard ABS and brake warning lights went on. The squealing noise continued after the vehicle was turned off for several minutes, then would stop. I popped the hood and felt what I suspected was the brake booster pump (driver side, toward the back and buried a bit) and it was vibrating in synch with the squealing noise. I tried adding some brake fluid, as the resevoir was down to about half-full, and miraculously the noise stopped. Only to start up about 10 minutes later, and didn't stop again. I couldn't get it into my local Toyota dealer (Burien Toyota) until Tuesday, and I had to drive it on Monday. On top of the squealing noise, there was also a high pitched beeping sound to deal with while driving. The hydraulic brakes seemed to work fine, but regenerative braking was missing. I dropped off the vehicle at the dealership Monday night & got a loaner. Tuesday afternoon, the dealership called to say that the brake master cylinder had to be replaced at a cost of $3000! After a bit of recovery from the shocking news, I told them to proceed with the fix but I wanted some consideration from Toyota for at least part of the repair cost - this is a ridiculously costly failure on a 50K vehicle, about 10% of what I paid for it! They said the part was in Portland and the vehicle could be fixed the next day once the part arrived. That started a two-week wait for the vehicle to be fixed. Portland didn't have the part, and I didn't find that out until Friday of that week. The part then had to come from Detroit (??!) and wouldn't arrive until the following week. I went on a business trip the second week, and I had to call and remind the service department that I was coming back to town on Friday and I wanted my Prius back. They did get it back to me, along with a $3019 bill. During the first week, the service advisor told me I needed to prove that I had taken good care of my Prius in order to have any chance of getting Toyota to help. I gave them copies of all my used oil analyses from the very start @1500 miles, and various other receipts. I heard nothing back until I picked up the vehicle more than a week later, then the guy said the records I'd given him were worthless - I had to provide oil purchase receipts, they were the only records that counted with the district rep. I went home, scrounged around and found more receipts and took pictures of my oil/filter backstock (27 bottles of Mobil 1 and two TRD oil filters). The oil boxes were dated early 2012, the last time I bought oil on sale. I scanned everything and dropped a CD off at the service department the Saturday after I got the vehicle back. Note that Burien Toyota has been the ONLY place I've had brake work done, and I haven't touched the brakes myself. That didn't seem to matter. MEANWHILE, I called the Toyota Customer Satisfaction (TCS) line that same Saturday seeking their help in this matter, but they told me they could do nothing since it appeared that the district rep was involved and his/her judgement was final in the matter. I questioned whether the district rep was involved at all, and the TCS rep said she'd call the dealership on Monday and find out. After some goading from the TCS rep and unanswered messages left on his phone, the service department manager finally contacted me last Wednesday morning (4/17). He told me the only thing that counts with the district rep was a formal/informal maintenance log, recording service at some # of miles. Receipts wouldn't carry much weight. He also said he was going to be talking to the district rep that day for the first time about my case (the service rep said they'd been talking to the district rep the prior week!), and he would call me as soon as some decision had been made. He also said that because I had picked up the vehicle, it would be more difficult to get some compensation. I hadn't heard that before! It's now Monday, 4/22, almost four weeks after I put my Prius in their shop, and the service manager hasn't called back. I expect I'll have to get TCS to prod him again into contacting me as promised last week. I've pretty much lost my faith in Burien Toyota, though I haven't had any further brake master cylinder problems. I do now have a nasty loud brake squeal coming from the driver side brakes when I brake while moving slowly, meaning that I probably have a contaminated brake pad from the brake bleed process after replacing the master cylinder. I'll post the epilog to this story in the next day or so when I finally speak to the service manager. My Prius is no longer a bulletproof vehicle, but a very expensive one to maintain, more like a BMW.