2007 Prius TPMS Woes

Hi All,

On my 2007 Prius, I had a TPMS light come on last summer but I ignored it. Resetting procedures never made the light go away.

I finally took it to a tire shop today and they said the right front sensor battery was dead. I asked about replacing all four vs one due to the age and they recommended I just change that one. I waited for a really long time and then they told me there was a problem with the tpms computer syncing with all of the sensors. They said they fixed the first problem but there was a second problem.

Great.. this cost me $92.

Then they said I need to take it to a toyota dealer.

Then I went next door to Discount tire and they connected their tool and said two codes came up
C2176 (something about needing to drive the car before it can register)
C2177 (something about the ECU needing to be reset)

Discount said to drive it and give it a day or so and then go back to them if the light didn't go out.

What should I do? Do I need to just go directly to a dealer, or just ignore the light altogether? I also thought about disconnecting the battery and connecting it back up.

 

Thanks, I shouldn't have spent the $92 to end up with a light still on.

In the future if any more have a dead battery, I will buy 3 of them on amazon and then wait until the tires are replaced.

 

Yea I don't know, I thought the same. I thought mixing wouldn't work. I asked and they had said it's common for them to replace 1 at a time as they go.

 

I just called the dealer and they want to charge $125 just to do a diagnosis.

Unbelievable. My stupid mini-Vci and tech stream wasn't able to communicate with the tpms controller.

Not sure what to do now maybe I can disconnect the negative terminal for a few seconds and reconnect? Anyone have advice? Had I known this I wouldn't have spent the $92 today

 

Thanks I tried it twice again after they put a new tpms sensor but no luck.

 

Thank you. I called them and told them Toyota wanted $125 just to even start any diagnosis. The tire shop said they would get back to me after speaking with the manager.

I doubt they cloned the old TPMS info onto the replacement one. Can this be done with all TPMS sensors or only special ones? The other tire store went around to each wheel and was able to verify they are all working. The issue is syncing it appears. As I said before the other tire shop said there were two codes C2176 (something about needing to drive the car before it can register)
C2177 (something about the ECU needing to be reset)

I'm not sure what to do. I have a mini vci firmware 1.4.1 that doesnt want to connect to the tpms and some other controllers (like the transmission control etc). I am installing different version techstream software (an older version) to see if maybe that will allow me to connect to it.

 

Very true. I think when selling it (which I may do this year), it will make it a lot harder without dropping the price significantly.

 

Thanks the person working the front desk said there were two problems, 1 the bad sensor which they fixed, and the other them not being able to sync the sensor to the computer. They said they fixed the first problem but something was wrong with my computer and it needed to go to the dealer. Then I got mad and told him bulls*%T and he raised his voice and said I owed him $91, eventually I calmed down and he explained to take it somewhere else and see if they can program it and then he would reimburse me for that amount.. I paid and left then called toyota and they wanted $125 just to diagnose. I called back later this morning and told him how much Toyota wanted and he said he would talk to his manager. I still haven't heard back.

 

Thanks so much. Right now my mini vci connects to the prius with techstream but I can't connect to the tire pressure monitor controller. I will try an older version of the mvci driver and techstream to see if I can connect to it. I guess I need to do that before I can do anything in the video or the PDF

 

I asked for the old TPMS so I have it. When I went to discount tire next door, they were able to pull the two codes from the TPMS so I don't think it's related to my issue. With my mini vci I can't connect to some of the other ECUs like the transmission, etc.. so I think they are separate issues.

 

I just tried connecting to the tpms with the older techstream and driver version (v8.30.023) and no luck. I get the same "selected system is not responding or available" message. This is the case for all of them except for the Engine and ECT, Hybrid Control, HV Battery, and Cruise Control. Those ones worked. hmmmm. I wonder if the particulay mini vci I have is no good.