Nevertheless, it is not particularly challenging as long as you are aware of its location and the steps required to gain access to it. There are numerous objects blocking the way from finishing the work, and it is hidden in the trunk rather than under the hood. Unlike the majority of automobiles, changing or installing this battery is not an easy task. The purpose of this article is to explain how to swap out the smaller 12-volt battery. The Toyota Prius has two batteries inside: a big 200-volt battery that powers the car when it is in electric mode and a little 12-volt battery that powers the accessories like the lights and radio. Before your hybrid battery died, did you notice that you were going to the gas station more frequently? That might indicate that your battery isn’t fully charged.Īre any or all of the aforementioned signs present in your Toyota Prius? It’s time to have your hybrid battery inspected. When the battery isn’t performing its fair share, it does that. This might indicate that your internal combustion engine (ICE) is operating harder than usual. A battery issue may be the cause of sudden increases or decreases in your car’s charge stage. Before your hybrid battery died, did you notice a rise in fuel usage? The engine will step in to fill in for the battery if there is a problem, which results in more fuel being used. How certain are you that the battery in your hybrid car is the issue? Let’s go over the most typical causes of a failing Toyota Prius hybrid battery. Common Symptoms That You Need to Replace a Prius BatteryĬommon Symptoms Of A Failing Prius Hybrid Batteryīut first, some background information before you make any decisions. What Happens If You Don’t Replace a Prius Battery?.Replacing Your Prius Battery With Bumblebee Batteries.What to Remember When Determining the Cost to Replace a Prius Battery?.Does The Battery In Your Toyota Prius Still Have A Warranty?.Common Symptoms Of A Failing Prius Hybrid Battery.Just a thought: 12 volt replacement will be a lot easier if you go with the stock battery. A handy way to isolate disconnected leads is by pushing a heavy rubber glove over them. With all connections, negative lead is connected last and disconnected first. There is a handy bolt head on the block, directly accross from the fuse box.Ĭonnect that up, then disconnect your battery. Just be careful with polarity: postive lead to the bare copper terminal in the fuse box, negative lead to an exposed bolt or nut on the engine block. I'd suggest to hook up something like that, at the jump-start terminal under the hood. Tire Pressure Monitor settings (just a guess: this might be lost) I've done it once, but dang if I can remember which one it was: there are at least a couple.)Ģ. Window auto up/down function (pretty sure this did happen to ours, when they replaced our 12 volt at time of purchase) (the relearn procedure is doable by owner. For the Prius, things I can think of that might get lost with battery disconnection:ġ. Click to expand.The last time I took out a battery I rooted around in my toolbox and found an old 0.5 amp trickle charger (low amperage, designed for motorcycle battery use).Įven that amperage is likely overkill for the purpose of retaining memories, but it has worked ok for me.
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