I've got 127k on my 2008 Prius and I finally had to have something fixed on it. Was driving along when the triangle exclamation symbol popped up followed by almost every other light on my dash, which was then followed up by complete shutdown. Figured out that if I let it sit for a few minutes, I could drive it for a few minutes. Doing the repeatedly, I was able to make it to the dealer and drop it off after hours. Waited for the call in the morning. First call came around 10am when they told me they were trying to track down parts to finish the estimate. Got the real estimate around 12pm. It was a little over $1000. This is what they said "needed" to be done. 1. Back brakes needed to be tightened 2. Tune up 3. Air Filter replaced 4. Cabin Air Filter replaced 5. Throttle body cleaning 6. 12v Battery replaced 7. Invertor pump replaced 8. Serpentine belt replaced. Interestingly enough, I had just cleaned my cabin air filter 2 days previous. I asked what all they did for a "tune up" and he replied, "we change the spark plugs" -- and they charge $156.00 for this! I asked why I needed a throttle body cleaning and he told me that it was really dirty and was contributing to my poor performance and decreased mpg. I hadn't complained about poor performance so I asked him, "Do you mean that I should be getting better than 57mpg?" --- he had no reply. I told him I'd call him back. So I went online and did some research and figured out the only thing setting those codes was the invertor pump. Given that my battery is 4 years old, I decided to let them replace that also. Total bill was $610, $229 for the battery and $381 for the invertor pump. On the way home, stopped and got an air filter ($14), 4 bosch iridium spark plugs ($28), serpentine belt ($8). Changed the air filter & spark plugs in about 30 minutes last night. Old plugs didn't show much wear at all. Also, although it looked pretty darn clean to me, sprayed down the throttle body with carb cleaner. Still feel like I overpaid, but at least I said quite a bit from the stealership.