Toyota TUNDRA Key Fob

How To Change Battery In Toyota Tundra Key Fob? [Quick Guide]

If your vehicle’s doors cannot be opened easily with your car key, the cell battery almost certainly has to be changed. 

The battery on your key fob may be replaced, which is much simpler than you might imagine. 

How To Change Battery In Toyota Tundra Key Fob
How To Change Battery In Toyota Tundra Key Fob

This post will walk you through every tool that you require.

VIDEO: How To Change Battery In Toyota Tundra Key Fob

Here is a tutorial about How To Change Battery In Toyota Tundra Key Fob:

What kind of battery does the key fob need?

CR2032 battery
CR2032 battery

To change the battery in the key fob, you will need a screwdriver with a flat head and one CR2032 battery. 

Before you begin, ensure you have all these materials and tools ready and double-check the type of batteries in your key fob.

  • A screwdriver with a flathead
  • One CR2032 battery

Easy instructions on how to replace the battery in the keyless entry remote for your Tundra

 Keyless entry remote
Keyless entry remote

Your keyless entry remote likely has a coin cell battery inside. 

If the key is already in the keyless entry remote, remove it so that you do not have any obstructions.

Make an effort to disassemble your remote key fob in a careful manner using prying tools. 

Remove and replace 1 CR2032 battery using a screwdriver with a flat head. 

After the new battery has been inserted, test the functionality of the keyless entry remote by pushing its buttons. 

If everything is working well, you can now assemble the case of your keyless entry fob in the opposite order.

The last thing you need to do is replace the cover on the fob. 

Make your best effort to combine the parts by hand, starting at the top and working your way down. 

We are finished if the casing for your remote key fob is securely closed. 

If not, proceed to the previous step again.

Reasons Why Toyota Tundra Key Fob Isn’t Working

No longer providing Remote Connect Service.

Remote Connect
Remote Connect

A paid subscription service known as “Remote Connect” is required to use many of the capabilities on the Tundra key fob. 

When you buy a Toyota Tundra, Toyota will provide you with a complimentary subscription to this program for the first year after your purchase.

The following are some of the features that Remote Connect possesses:

  • Remote engine start.
  • Remote engine shutdown.

Control the windows, doors, horns, and emergency lights from a remote location.

The Toyota app also provides access to the ability to control these features.

Nevertheless, Toyota has linked all of these functions to the remote key fob. 

After the complimentary membership trial period ends, your key fob will no longer function if you do not pay the required subscription fee.

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Therefore, if your Tundra key fob functions, such as the remote start and stop, are not working, the most likely cause is that your membership has expired.

A fee will need to be paid to make it function.

For the “Remote Connect” option, Toyota, at this time, levies a price of $8 per month, or $80 if paid for an entire year in advance. 

If you subscribe to this package, the key fob will begin functioning normally once more.

The key fob’s battery no longer has any life left in it.

The key fob for the Tundra normally has a lifespan of two to three years. 

However, the time the key fob can function normally depends on its use.

If the battery in the key fob dies, your key won’t be able to unlock or lock the Tundra, and it won’t be able to start the vehicle either. 

You will be able to immediately determine whether the battery in the wireless remote control has been exhausted if you have been using the key fob for an extended period.

Because the battery will no longer be able to provide a powerful electronic signal as it reaches the end of its life cycle, the key fob’s operational range will be significantly reduced when it does not function properly. 

There will be instances in which the operational range is less than 4 feet.

We have included a detailed, step-by-step guide at the bottom of this post that explains how to replace the battery in the key fob.

Be Sure to Check the Other Key.

Toyota Tundra key fob
Toyota Tundra key fob

Two key fobs are included with the purchase of every Toyota Tundra. 

Please try the other key to your vehicle if the first one isn’t functioning properly. It will assist us in isolating the problem.

If one of the key fobs does not function properly, the issue is with the key itself. 

But if neither of the key fobs will work, the issue must be located somewhere, most likely in the electronic control unit of the Tundra.

Check the Fuse Labeled “ECU-ACC”

Inside a Toyota Tundra, you’ll find not one but two fuse boxes.

 One is located within, and the other is located externally in the vehicle’s engine compartment.

Turn on the ignition and then open the fuse box that is located under the steering wheel. 

The fuse cover has a schematic; you need to locate the “ECU-ACC” fuse

It is a fuse rated at 7.5 Amps that supplies power to all of the electrical components responsible for controlling the smart key system.

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If the fuse blows, please replace it with a fuse having a comparable amperage rating. 

After you make the necessary adjustments, your key fob will resume normal operation.

The 12-volt battery has passed away.

 12-volt battery
12-volt battery

It would be helpful if you could check to see if the 12V onboard battery in the Tundra has run down. If the battery runs out of juice or has a voltage that is too low, your key fob will not function properly because the 12V battery will be unable to power the essential components.

Batteries that have a low voltage will behave in strange ways. Therefore, if the 12V battery in your vehicle is more than 36 months old and you are having trouble starting the engine, you should consider replacing the 12V battery. 

The onboard computers are being messed up because of the low voltage.

In addition, the 12V battery terminals will oxidize over time, resulting in insufficient power being supplied to the electronic components of your Tundra. 

Please use a wire brush to clean the positive and negative battery terminals if you notice a significant amount of white oxidation on either of those terminals.

The key fob is expected to function normally after the 12V battery has been replaced or cleaned.

The Key Fob has Been Broken.

The keys on the key fob are susceptible to wear and tear if used frequently. 

If the button does not successfully make contact with the circuit, the device will not function.

However, in this scenario, you will need to buy a replacement key fob from a Toyota dealer and pay for the dealership to reprogram it. 

It can cost as much as $1,500 to reprogramme a genuine Toyota Tundra key. 

It’s a ripoff, but we have no choice but to pay for it as customers.

 We have no other options.

Toyota Models

  • Toyota Highlander
  • Toyota Tacoma
  • Toyota Corolla
  • Toyota Camry
  • Toyota RAV4
  • Toyota Crown
  • Toyota Land Cruiser
  • Toyota 4Runner
  • Toyota Sienna

FAQ on How To Change Battery In Toyota Tundra Key Fob

What kind of battery does the key fob for the Toyota Tundra use?

To complete this task, all you will need is a standard screwdriver with a flat head and one of these CR 2032 batteries.

Can you tell me what sort of battery my Toyota key fob requires?

battery type CR2032

The majority of Toyota vehicles use a CR2032 battery, which can be purchased in retail outlets as well as on the internet. The cost of these batteries is often less than $5, making them a reasonably priced option. Replace the battery in your Toyota key fob, then place the case back together and secure it with the screw cap. Now that the battery in the Toyota key fob replacement has been replaced, try it to make sure it is functioning properly.

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Is it necessary to reprogramme the Toyota key fob after the battery has been replaced?

You will need to reprogramme the key fob in order for it to once again detect your vehicle if the connection was reset when the batteries were replaced or if it was somehow disrupted in some other way.

What is the price range for replacing the battery in a Toyota key?

between $200 and $350

Replacement Key Remote for Toyota

This can cost anywhere from $200 to $350, but if drivers take advantage of our deals on components, they can save money. Because key fobs require their keys to be cut as well as their electronics to be programmed in order to match up with your Toyota vehicle, a replacement will cost you additional money.

How long does the battery life typically last in a Toyota key fob?

Is the key fob for your Toyota Smart Key® not functioning properly? It’s possible that the battery in the key fob for your Toyota RAV4 needs to be replaced. If the battery life in your Toyota key fob is getting short – the typical battery life is between one and two years – you will hear an alarm when the engine stops when you are inside the vehicle.

Writer at Discover Seldric | + posts

Meet Jojiela Magsisi, a fervent car lover and gifted writer whose love affair with automobiles goes beyond the rev of an engine and the gleam of chrome. With a unique perspective and a talent for storytelling, Jojiela brings a fresh voice to the world of automotive journalism.

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