Brake-Related Warning Lights On

that could be something as simple as a wheel speed sensor or something nastier...

 

Strangly the same thing happened to me today.
- ((!)) light on
- ((!)) light on

- ABS light on

Didn't have the VSC light on

Driving along and the lights came on. Drove a bit and the brakes seemed OK. Read manual which recommending stopping. Stopped, rang Toyota and because it was Sunday afternoon, they said they would get an after hours tech to ring us. Switched off, waited 20-25 minutes. When switched on again lights went out. Drove home.

Seeing the dealer tomorrow but don't hold out much hope they will have an answer.

 

Took it to the dealer today.
Code P0607

The 'Fix' for this code is replace the Hybrid computer.
The cost is approx $NZ 3500 = USD 2000.

As they the car is less than 3 months out of warranty and relatively low mileage, 55000km, the dealer will ask if Toyota will reduce the cost.
Here's hoping

 

I just found another thread with the same code.

http://priuschat.com/forums/gen-ii-...roubleshooting/16189-prius-died-way-home.html

It talks about the cruise control blinking.

"hint: if DTC P0607 is detected while the cruise control is in operation, the system clears the stored vehicle speed in the hybrid vehicle control ECU and cancels the cruise control operation. at the same time, the CRUISE main indicator light blinks to inform the driver of the malfunction. when this trouble code is detected, fail-safe remains on until the power switch si turned off.

inspection procedure: replace hybrid vehicle control ECU"

I don't use the cruise control much but when I did use it a few months ago the cruise control light started flashing and wouldn't resume cruise or turn off until I stopped and turned off the car. Didn't realise it was a fault warning. Just thought I was using the cruise control wrong (1st car with cruise control). I looked in manual but didn't find anything about this.

Now I can find it in the manual on pg 134!
It makes more sense when you know what you are looking for.

 

In researching your issue, I note that the Toyota repair documentation is unclear on the failed component when DTC P0607 "Control Module Performance" is logged. See the Prius 2005 repair manual, p. 05-270 and the 2006 repair manual, p. ES-296. Those pages point to a problem with the engine ECU (aka ECM), not the hybrid vehicle ECU.

However, p. 05-2719 of the 2005 repair manual and p. CC-26 of the 2006 manual do indicate that the HV ECU is the culprit when DTC P0607 is logged.

So, I suppose you could replace the HV ECU first, as that ECU is responsible for cruise control functionality; but don't be surprised if the ECM needs to be replaced instead. Maybe you can obtain a salvage part if you can't get help on the price of a new component. The going price of salvage Prius ECUs on eBay seems to be US$200 or so.

 

oops, nevermind. please ignore.

 

My reading of the documents is that both ECM and HV ECU can post P0607 codes: the one to replace is the one that is reporting the code. P0607 means self-checking of this module showed some errors. The CC section of the manual refers to the STP signals, the signals from the two poles of the stop light switch, and those only connect to the HV ECU.

There is no central repository for DTCs; instead, each module is responsible for recording its own DTCs. This is why you can only get ECM (engine) DTCs from a regular scanner - only the engine ECU's address on the CAN bus has been standardised by SAE. Non-Toyota scanners could easily read DTCs from other modules, if only they knew the right addresses to read from.

Sometimes ECUs do record a DTC saying 'other ECU reported a problem'. For example, P3000 on the HV ECU usually indicates that the Battery ECU reported a problem and you should look there to find out what the actual cause was.

 

Toyota replaced the unit and it only cost me 'labour only'.
As it is basically unplug the old unit, plug in the new unit, test and test drive I was very pleased with the final cost.