Wow, a whole bunch of lights came on at once!

:mod:All the lights went off about 50miles before we got to the Ontario Oregon toyota dealer. :mod:

Service person said the lights probably came on due to loose gas cap or dirt in the gas cap seal/o-ring.

Ok, that was all fine and dandy, but 4miles out of Boise Idaho we had ALL the lights come back on again.

So, we are in the waiting room waiting for our $98.00 code check to find out how much we will owe on a repair...

Sales person asked how many miles we have on our prius. I replied 127,000miles. He said "good testimonial".... I was like... hummm.
Personally I think this car should go 400,000 with out a hitch... Maybe not....

Well, still waiting... We will keep ya'll updated.

 

Had the same thing happen on my 2006 with 35k miles. The tow truck driver jumped it and followed me to the dealer. The dealer replaced the 12 volt battery, which seems to have solved the problem. Not sure why the battery would have died with the limited mileage on the car.

 

Understand something about the battery: 12.5V does not constitute a good battery. You are likely measuring your voltage under a no-load condition.When the battery gets tired, the full-load voltage will sag. Also understand that for the couple seconds between when you press the start button and when the inverter kicks in, the 12V battery is under quite a load when all the electrical systems come on. A good battery will sag a good volt during this time. A tired battery could sag far enough to not allow all systems to come up - and when that happens it looks like Christmas on your dash.

 

First, measure the battery voltage after several hours have elapsed with the vehicle IG-OFF, and see what it is.

Second, note that a low battery voltage will prove the battery is definitely bad; however a high battery voltage does not prove the battery is definitely good. This is because battery state-of-charge and capacity are only loosely correlated with voltage.

Your battery is already ~4 years old. Typically you would be lucky for the battery to last 5-6 years. So if you buy the battery "needlessly" now, instead of buying it one or two years from now, you might be giving up at most $50 worth of value on a $160 battery.

Unfortunately, battery diagnostics are not unambiguous, based upon poster reports that their Toyota dealer found the battery to be OK, yet problems persisted and after the battery was replaced the problems went away.

You've received numerous replies agreeing that the 12V battery is the most likely suspect. It's now up to you to decide whether you wish to accept that advice or not.

 

That's a reasonable test.

I suggest that after disconnecting the 12V battery, you let a few minutes elapse so that all DTCs are lost and the ECUs can reset, before you connect the other battery. Good luck.

 

Thanks for the update, you used a clever approach to rule out the 12V battery. It'll be very interesting to find out what your dealer discovers. Good luck getting your car promptly repaired under warranty.

 

Fun how it can be a real adventure tracking down these codes sometimes

 

Yes, it seems that on average the ECUs will cost around $1K each, so buying salvage parts would be the way to go once the car is out of warranty.

My dad's 2007 also needed a new skid control ECU, but in his car's case the brakes were acting up so that pointed more definitely in the direction of that ECU.

Glad that your car was repaired without difficulty. Can you please post the DTC logged by your car?

 

Pls check your repair invoice to see if the DTC were recorded. Frequently the tech will provide this info. Thanks!

 

You lucked out with the extended warranty. That's one :_>

 

Turned out to be the inverter water pump..
The diagnostic test was $98.00 and the repair came to about $275.00. The water pump is about the size of a coffee cup. This pump is located under the car and pumps water to cool the inverter which is used to convert direct current into alternating current.
We found out about the problem in Ontario Oregon, but drove all the way to North Platt Nebraska to have the pump ordered and installed. We took it easy when the computer said we were using energy from the batteries for long periods of time, like long up hills.

 

That was the same thing that happened with my wifes 05...all the lights came on, then went out a while later. Water Pump. My lights never turned on, but there was leakage under mine (in the garage). It was also the water pump. They told my wife that there were issues with the water pump and Toyota extended the warranty for it, although hers was beyond that limit.