Brake light and ABS lights staying on

You do need to read the codes to know what the problem is. If you want to read the codes yourself Mini-VCI is good and cheap but you do need a Windows laptop with it.

There has to be some actual problem for the light to come on so just resetting it’s not a good idea.

 

We got our CT200h back after getting it repaired after a lady ran into my wife and the airbag and seatbelt light would not go off. The paperwork said the had to recalibrate the seats.


iPad ?

 

Looking at what somebody else had to do doesn't tell you anything unless the diagnostic codes you have are the same ones they had, which isn't a question you can answer if you don't have your codes yet, or if the somebody else didn't post what their codes were.

Then, even if the codes match, that just means the same general problem area; there is almost always a bit of actual diagnosis left to do once the code tells you where to begin. For example, a code about unlikely readings from a sensor could mean that sensor is bad, or there is a bad connection in the wiring leading to it, etc. So it's still not that useful to ask what fixed it for somebody else, even if the codes themselves match, unless you have also done the followup work to find out why you had those codes, and the reason turned out to be the same as for the other person.

Whenever you do it, the step that first sets you on the path to solving your problem is when you read the trouble codes that you have.

On a Prius (up through Gen 3 anyway), you can read the brake/abs/skid codes in a pinch with no special tool at all, a short wire or paperclip will do. Other threads here have the details.

-Chap