2006 throwing up service lights

You can start by getting the codes that you are able to get without any scan tool.

Blink (a/k/a Flash) Codes – How to. | PriusChat

Then at least you will know which codes those are, while you work on how to get the rest of them.

 

Car details, recent maintenance/accident history?

 

The blinking light code will need a source to tell you what the issue is as well as understanding the blink rate. Easy to do but be careful using a paperclip to short between sockets - make certain to count carefully.

Higher end code readers but well under $200 are well worth the cost. They can read codes and also freeze frame to isolate and tell you what is causing the code in more detail. Get one from amazon with next day delivery. Codes can then be looked up on line or buy a repair guide (extremely useful for minor repair issues, anyway) to get details on the code relative to your model.

These will pay for themselves many times over because an old Prius will be throwing codes again and again in the future. Knowing what to fix and even ignore can save $$$. Some might be easily fixed by yourself rather than a shop.