HVbattery techstream diagnosis of the hybrid battery pack

He did not. If you start with a reasonable battery, A grid charger is capable of slowly balancing the whole battery at once. Then you can use readouts from the battery ECU to see the health of your HV battery. I did individual module balancing, but the grid charger should be able to do a sufficient job.

JeffD

 

good deal.......FREEEEE

Is your car actually under warranty or is this a "goodwill" that they are doing?

 

No either about it.

Congrats!. Just so you know, you have caused a big headache here for the people trying to understand when Toyota extends warranty assistance. The only moral seems to be to always ask.

 

sounds right.

 

interesting outcome. The confusion might have worked in your favor.

 

lol. sure n/p

 

Exactly.

I cannot imagine why the dealership would fuss once Toyota had authorized the warranty work.

 

If anyone sees this later and has issues with their pack after looking at the techstream output I would have suggested that block 3 is the actual cause of all the codes. You can see it from both the voltages under load, all are 15V+ while the "bad" block is 13.88v and the internal resistances are all 0.24-0.25 with the exception of #3 which is 0.29 ohms. Obviously it all worked out for you but this battery should be a pretty easy one to rebuild if someone were needing to do it themselves.

 

I'm quite sure NY adopted CARB in 2004, including the Toyota 10/150 warranty. Hopefully whoever said 2008 was making an honest mistake. Just so other NYers reading this don't think they are 8/100 if their Toyota hybrid is '07 or older.

Excellent result, doctorman. A brand new Toyota battery right at the end of the warranty is indeed a dream scenario!

 

In order to reset the emissions monitors to prep the car for emissions test you should just have to drive about 20 miles, some highway, some city, or just drive the car normally for a day or two. If no warning lights come on there is a +95% chance you will pass the test. The procedure in the service manual is overkill.

The I/M monitors reset whenever you clear codes and/or unhook the 12V battery. Until the car verifies all emissions related systems are working correctly you cannot pass an emissions test. Test stations implemented this procedure so people with unhealthy cars don't just "clear the codes" a block away from test station and head right over.

You can verify that I/M monitors are "READY" using most OBD2 scanners. (autozone/oreily etc) Most states allow 1 monitor incomplete, but it cannot be O2 Sensor or Catalytic Converter. (often the Evap monitor is not complete, but that should be ok for the emissions test).

 

Hello I am Kevin.

I have purchased three cells off of ebay for my 2004 prius and I have just purchased the $400 grid charger.

Is my plan appropriate...
-Remove battery
-replace two bad cells
-install battery
-install harness for charger (assuming it comes with charger, I purchased the one for 2004-2009 prius')
-plug charger into outlet and let sit for 24 hours
-install the auxillary battery, replace since it is bad
-reset the codes using the manufacturer check system
-take car on test drive
-if all is well replace all the interior of the hatch

is this a good plan or do I need to do something else?

thank you

Kcecchini @ wccnet . edu

 

Pray that the modules you bought on Ebay are good.
Good luck with the repair.

 

Actually pray that all the modules in the pack end up with similar voltage, capacity, state of charge, and internal resistance. The battery ECU will generate error codes if the blocks have too much variance from each other.

If they are all equally crappy, the car won't code, but cars performance won't be as good.

Mixing great modules with bad ones is a short term fix.

 

I recommended to Kevin that he would be better off buying a new pack from Toyota in a thread he started.

Instead, he opted for "damn the torpedoes".

 

Jadziaman, I do appreciate your recommendation on purchasing a new battery, however, I am a bricklayer, which in Michigan is seasonal work. therefore, I cannot afford the $2000, $3500 for install fee at this time.

I am hoping that I can limp along, while saving lots on fuel economy, will help me to save for a new battery pack. or refurbished, which I got a quote for a refurbished battery pack, with new auxiliary battery, and install, for $2700.00.

a shop in Southfield. I asked them if they could replace the bad modules and they replied that they do not practice that as they like to keep their customers happy, since replacing single packs would only by time and not fix for good.

so as of now, the prolong charger is connected, chaging, and still waiting on the battery packs, which I asked for a refund and I got the refund, and supposedly the three packs are still on their way. I order them Dec 17th. hopefully I wont need them.

 

Good to know 3prongpaul, thank you for the information. at this time I only have the prolong charger connected and charging.