Toyota Avalon Hybrid 12v Battery Replacement Process And Price

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Driving with a faulty battery in your Toyota Avalon Hybrid can strand you somewhere, and adversely affect the electrical system and the car’s performance. Conversely, changing batteries can hit your wallet hard, as the Toyota Avalon hybrid 12v battery replacement is fairly costly.

In this case, determining the proper time to replace the car battery and doing the job at your home garage can help you reduce the cost. So let’s get the process and everything about the replacement in order.

Toyota Avalon Hybrid 12v Battery Replacement

In general, the battery of a car, truck, or SUV, including the Toyota Avalon hybrid car, lasts around 6 years. However, the longevity of vehicle batteries differs based on plenty of factors, including:

  • Humidity
  • Heavy accessory loads
  • Extreme temperatures
  • Frequent towing

If your Toyota Avalon hybrid vehicle encounters either of these scenarios, its 12-volt battery may need to be replaced within 3 to 4 years. More importantly, if you leave the car lights on throughout the night, you may get a dead battery the very next morning, no matter how high-end or new it was. Luckily, Toyota has a failsafe mode to prevent this error.

If you are wondering what the Toyota Avalon hybrid 12V battery replacements are, there are huge options out there. Some reliable models are:

  • Premium reconditioned Green Bean hybrid battery for a 2013–2017 Toyota Avalon.
  • Optima 8020-164 35 RedTop
  • EnnoCar Ni-MH 245V Hybrid Car Battery for Toyota Avalon 2012-2018
  • Duralast Platinum EFB Battery, 35-EFB Group Size
  • Dorman® – Remanufactured Drive Motor Battery Pack

Also Read: how to reset maintenance light on Toyota Tacoma 

When to Replace Your Toyota Avalon Hybrid 12v Battery?

Some signs indicate it’s time to replace your Toyota car’s battery. Track these symptoms:

The Car Won’t Start

A new battery has a specific capacity to deliver power, which is referred to as the battery’s cranking amp rating. As the battery ages, its amp-supplying capacity begins to fall below its actual capacity. If the cranking amps fall below the critical threshold, it will be impossible to start a car.

Also read: honda crv won’t start but battery is good

The Car Illuminates the Battery System Warning Light

If you notice a battery or charging system warning light coming on, take the car to an expert mechanic. He’ll perform some basic tests to find out if the battery needs replacement.

Electrical Parts Won’t Work

Along with beginning to fail, the car battery starts to drop the voltage it produces. As a result, the car’s electric parts can malfunction. So if you notice the electric components don’t work, check the battery.

Toyota Avalon Hybrid 12V Battery Replacement Process

Replacing a car battery is a bit of a complex process and requires sufficient skill in an automobile. If you are qualified and want to save some money on your 2013 Toyota Avalon hybrid 12-volt battery replacement, follow the process. Otherwise, you should let the job be done by an expert mechanic.

Locate the Battery

Open the hood on your car and check the engine bay’s right side, where the 12-volt automotive battery is located. For better understanding, it’s located in front of the engine air filter box and on the left side of the fuse box.

Also Read: What happens if I remove the abs fuse?

Remove the Bolt

With a 1/4″ drive ratchet and a 10 mm socket; rotate the bolt on the front of the battery hold-down bar to remove it. Then set the bolt aside. Now swing the hold-down clamp carefully through the engine air box and over the battery’s left side. Make sure it doesn’t contact the battery posts or terminals.

Also Read: will engine run with broken head bolt?

Remove the Terminal

Turn the negative terminal counterclockwise with a socket, drive the ratchet to loosen, and then pull it off the battery post. Once done, cover the terminal with a towel and place it far from the battery to avoid causing electrical contact accidentally.

Now turn over the positive terminal’s red plastic cover. And do the same thing with it as the previous terminal.

Replace the Old Battery

Now carefully remove your old battery from the engine bay and place it on the ground. Don’t drop or tip the battery over in the ground as it can leak the acid out and cause an accident. Clean the debris from the battery tray before placing the new one on it evenly.

Put your new battery into the plastic tray, keeping the positive post on the passenger side and the negative post on the driver’s side. Then lower the battery hold bar over the middle of the battery and make sure it doesn’t contact the terminals of the battery.

Secure the Battery

Attach the J hook bar to the back of the battery tray and secure the 10 mm bolt in its original place. Connect the positive terminal to the positive post, tighten the terminal nut snugly, and wrap it with a red plastic cover. But don’t over-tighten the nut, as it can crack or damage the battery post. Do the same thing on the negative side except covering. Finally, start the engine and flash the high beams to check the 12-volt battery replacement.

Note: this battery replacement process is applicable to the Toyota Avalon Hybrid 2013–2018 model. However, other models will find this DIY instruction helpful.


1. Is it really expensive to replace the Toyota Avalon car battery?

It depends on your location and the model of your Toyota Avalon. However, replacing the Toyota Avalon car battery can cost around $175 to $270 for parts and $95 for labor on average.

2. How much does the battery for a Toyota Avalon Hybrid cost?

The battery price for the Toyota Avalon Hybrid ranges depending on the brand, model, and quality of the battery itself. However, by investing around $2000, you can buy a decent battery with a longer warranty.

3. What if your Toyota Avalon hybrid 12v battery dies?

If your Toyota hybrid’s 12V battery dies, it will reduce fuel economy and won’t be able to hold a charge for long. If the battery dies, the car won’t start.

Also Read: How to Change the Battery in a Toyota Key Fob?

Final Words

Unfortunately, the Toyota Avalon hybrid 12v battery replacement is a bit pricy and needs to be changed periodically every 3 to 4 years. Compared to modern batteries, which are more resilient, hybrid technology is still evolving.

But once you understand when to replace the 12 volt battery on your Toyota Avalon hybrid car and how to do so, you can handle this maintenance job quickly at your home garage, cutting the labor cost. And these are handy pieces of information to enjoy optimum performance out of a car while avoiding hurting its fuel economy.

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