Replacing the hybrid battery with a new Toyota battery

When you've got the old and replacement battery side by side, doesn't it become apparent what needs to be transferred over? Or is it not that obvious?

Does doing DIY install reduce the warranty period? I'm thinking from three years to one, IIRC? Did you get a quote for installed?

Myself, even though I think I could DIY, I'd probably let the dealership do, for the warranty extension, and peace of mind.

 

Everything (well almost everything) you will need to know is in the service manual in the HB - P112 Hybrid Battery Control section for the Gen 2. PM me and I will provide you with that section for your swap. Or you can do a Google search for that section and maybe you will find a site that you can download it from for free. It used to be available several years ago.

 

Downloadable Toyota Prius Repair Manual | Page 2 | PriusChat

 

I may be incorrect but I could not find the section Deadbeat needs in your link.

 

Have the two batteries side by side and it will be obvious.

Take some pictures to remind yourself.

Go slow. Allow yourself plenty of time. Don't wait for Sunday night to start if you need to be to work on Monday morning.

For goodness sake unhook the 12v battery when doing the work. Use your volt meter to check the high voltage leads for voltage before putting your hands in them. I would like to imagine you'll use high voltage safety gloves, but if you are like most folks you won't. (shrugs shoulders). I like to think most people think their lives are worth spending $50 to protect, but I've seen time after time that I am wrong.

Use ALL of the NEW parts Toyota gives you. The nuts with washers. The nuts without washers. The leads. The black plastic cover. The foam pieces.( Notice that they are different and go on specific sides of the pack.) The fuse holder.

Don't decide that you know better, and decide you'll just use "some".

Be sure to return the old battery core in similar condition to the NEW one. (with the addition of the 2 brown rubber mats) Remove the old orange leads off of it and wrap the harness similarly to how you received the new one.

Be sure to correctly seat the bug orange plug once everything is back together. Practice it outside the car a few times to get the feel of that final "click" when you slide it downwards.

Feel free to call if you need some help during the week.

Forgot that this is a 2010. Some of the parts will be different. Still, you will be able to figure it out. Lay out all the pieces
Take pictures. That will help a lot.

 

The nuts with built in washers for the module terminals require 48 in-lbs of torque.

 

Good work, don't doubt yourself. This is not rocket surgery. Hope you have good results with this!

 

As the HV battery is not intended to be a user serviceable part, there will be no mention of it in the user (owner's) manual.

I know it is a moot point for you, but I will mention it anyway for future readers.

You can download the hybrid battery section (as detailed in jadziasman's post #5, or, in fact, any other part of the repair manual, new car features manual, or electrical diagrams manual, for that matter, from Technical Information Service (TIS – techinfo.toyota.com), by creating an account and then taking a two (business) day subscription. You can then download anything you desire while your subscription is active. This includes the exact same instructions a Toyota tech would have to do the HV battery install.

I didn't mention it before as by the time I got to the thread you had already completed the job. So, I hope that helps someone in the future.

 

I just finished doing this and I will be uploading a video shortly after I edit it but it wasn't as hard as you may think.like they said once the batteries are side-by-side you can pretty much see what has to be changed over and then the install or taking out the battery is already on YouTube so I will be uploading my version of the swap out on a brand new battery.

Posted via the PriusChat mobile app.

 

As I ask all folks, you used an inch-pound torque wrench for the connections, right?
Tightening "until it feels about right" is a bad idea for HV and voltage sensing connections.

 

Hi everybody, first time posting!

Recently was able to find a New Toyota Prius Battery direct from dealer for $1689. Hoping to do the install myself, but wondering if anyone has documentation of different torque specs. Can't seem to find them.

Also in the case of finding a battery so cheap, is it worth just having the dealership install for the extra 2 year warranty?

Thanks so much!

 

If only their labor rates for this job was reasonable. Then maybe.

Matt @Texas Hybrid Batteries, isn't a Toyota dealer but has been installing NEW geunine OEM Toyota HV Batteries w/ a 4 year warranty on him! He is taking a 3year gamble (years 2-3-4), that a failure will NOT happen. That's confidence, and a low risk gamble.
Texas Prius Battery Replacement

 

Torque info starts around page 82. Be careful: some are inch/pounds, which you would divide by 12 to be foot/pounds, if needed.