HV Battery Failing

i was the first:cheer2:





j/k

 

I think you need to take the car on a long drive with cruise control. I used to take my Prius on short trips, and noticed my battery always stayed below 4 bars, and hit one bar immediately after startup with the a/c on. A week later i took it on a long trip +40 miles everyday for 2 weeks and my battery always stayed above 4 bars.

Unless you want to manually charge it up to the green and shut it off leave it overnight. Put the handbrakes on, and put it in drive with your left foot firmly on the brake, and press on the accelerator fully, this will charge the battery fast. I suggest you do this on a empty road or parking lot.

 

Re: HV Battery Failing due to

...so is it very important to replace the ECU when replacing the HV battery? also I have to ask if it is terribly difficult to replace modules? I mean is the operation involved past a socket set and a like a chilton's manual or do you need a subscription to a technical website?

I have an 01 Prius and my throttle body went out. The dealer service told me this caused a malfunction in the HV battery. I picked up codes for cells 6 & 10 on a personal OBD scan. So Toyota motors has told me they will compensate $1k on the $4k bill to replace the throttle body, and the HV battery, or they can put that towards a trade-in.
I still owe $5k on the loan and it's valued at $72000.

So what do I do?

I'm an amateur handy man for frugality. However, If I pay the $3k to have the warranty I'm covered for another 8 years or 100k miles put on the HV. I'm really confused.

Please let me know any suggestions.

 

Re: HV Battery Failing due to

This statement might be causing part of your confusion and indecision. In fact, if you pay $3K to replace the traction battery, the new battery will be warranted for one year, under the same warranty that applies to any new part installed by the Toyota dealer.

 

i have a new traction battery if anyone needs it, if anyone need it and can afford one please send me a message

 

Don't know if I'm breaking the rules by saying this, but I have a 2005 recent wreck in my shop (my daughter ran it into a power pole Aug. 25, 2009). I've been concerned that the HV battery is wasting away by not being in use. I'd be willing to make a reasonable deal just to see it get back into service. Dial me up and let's talk. Rich (503) 812-2229.

 

I'll give you a call Rich, but I'm not sure if I need the battery just yet...

the dealership told me I have two dead cells due to the car only running on the battery, since the throttle is stuck.
I don't know if I should believe this or not so I'll follow the symptoms... so the dealership wants 4k to replace the throttle body and battery and Mr. Wong was right, Toyota will warranty the new battery with only one year manufacturer's warranty ___bummer__...but I'll just DIY it and see where it takes me.

Does anyone know how to clear codes on a 2001 Prius?

 

Note that Rich's car is 2G. That battery will not work on Classic since the Classic battery has 38 modules while 2G has 28 modules. Now, if you get two 2G batteries with 56 modules, then in principle you may be able to pick 38 of those and install in the Classic battery case, subject to possible issues with SOC charges between the modules coming out of the two battery assemblies. Another poster recently did this and it seemed to work well although he may have had to work on the sheet metal enclosure for fit reasons.

The reason that this makes sense for Classic is because Classic salvage batteries are not easy to find and are relatively expensive, while 2G salvage batteries can be purchased for around $400 each (or less) plus shipping. Why pay $1K for a Classic battery that is ~8 years old?

You can clear most codes by disconnecting the 12V battery negative terminal for several minutes.

Before you replace the throttle body I suggest that you try cleaning the dark gunk out of the throttle body interior and throttle plate. You can rotate the spring-loaded throttle shaft by hand when the car is IG-OFF, so that you can clean the throttle plate underside.

Maybe the correlation between the throttle body and the traction battery is as follows: the gasoline engine refused to start because of a throttle body problem. After repeated attempts to start the engine, the traction battery became depleted and two modules failed. This is just a guess.

 

Doesn't Toyota provide a $200 refund for old batteries?

 

Sorry to tread on your topic, & this is my 1st post, I would open a new topic, BUT all thats listed here, most concerns me, & I DID try using the search feature before asking silly questions:

I have a classic prius 2001, BUT am in uk, I am having traction battery problems from this car the reverse has just about stopped working, & i am sure i need a traction battery repaired!

I am being offered a 2004 gen 2 battery for 250 gbp! but only 28 cells & or a 2001 classic gen 1 battery for 75 gbp with 38 cells of which needs attention & apparantly has some dead or weak cells!

Which way do you suggest I go? parts are really hard to get for the prius here in UK, Espacially HV batterys!

Please advise...