Toyota 4Runner Key Fob Battery Remote Replacement (1999 – 2021)

Did you know that the Toyota 4Runner is known to be one of the brand’s toughest and most reliable vehicles? Not only that, the Toyota 4Runner has a long history dating back to 1983. It has used seven key fob keys over the years. Changing the internal battery in each key fob is easy and can be done at home. Follow this Toyota 4runner key fob battery replacement guide to find your particular key fob and see the corresponding video and text tutorial showing you how to change the battery.

For other Toyota models, see our Toyota key fob battery page.

MODELFOBYEARSBATTERYBUY BATTERY
4RunnerFixed2020, 2021CR2016Check on Amazon
4RunnerTombstone2020, 2021CR2032Check on Amazon
4RunnerRounded Rectangle2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021CR1632Check on Amazon
4RunnerTriangular Fixed2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020CR2016Check on Amazon
4RunnerSimple 3-Button1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009CR2016Check on Amazon
4RunnerSimple1999, 2000, 2001, 2002, 2003, 2004CR2016Check on Amazon
4RunnerSimple with Light2000, 2001, 2002CR2025Check on Amazon

How to Replace the Toyota 4Runner “Fixed” Key Fob Battery (2020, 2021)

Watch the video below or keep reading for a step-by-step tutorial on Toyota 4runner key fob battery replacement.

What you will need:

  • 1x CR2016 battery
  • Flathead screwdriver

Step 1

Locate the indentation at the top of the key where the key ring attaches. Now put a flathead screwdriver into the indents with the back part of the fob key facing up and twisting. The back casing of the fob key will come off after you twist

Step 2

Gently remove the inner piece and carefully set the fob key casings aside. Check the top of the inner piece for a little open slot in between the white plastic and the plastic. Now place a flathead screwdriver into the slot and gently twist until it slightly opens up. Use your hand to pull the inner piece apart gently and you’d get access to the old battery.

Step 3

Put a flathead screwdriver between the battery and the rubber wall on the inner piece. Slightly pop out the battery while holding the lower part with your thumb.

Step 4

Put in the new battery with the positive side facing up. The positive side is the part with lettering. Slide the battery in and make sure the rubber wall sits above the battery

Step 5

It is time to reassemble! Click the black part of the inner piece to the white part. Then place the inner piece carefully into the front and back casing. Snap them back into place and your key is all set!

Toyota 4Runner Key Fob Battery Replacement (2020 - 2021)

This is the battery you need for the Toyota 4Runner “Fixed” key fob:

Amazon Basics 2 Pack CR2016 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 2-pack of CR2016 lithium coin cells; replacement batteries for small electronic devices
  • DEVICE COMPATIBLE: Powers devices such as watches, calculators, sporting goods, games, medical devices, and more
  • DESIGNED TO LAST: Long-lasting, reliable battery life; performs in extreme temperatures

How to Replace the Toyota 4Runner “Tombstone” Key Fob Battery (2020, 2021)

Watch the video below for a step-by-step tutorial on how to change the battery in your key fob.

What you will need:

  • 1x CR2032 battery
  • Flat-head screwdriver

Step 1

Turn the key to the side and check for a “push” button. Hold down the button and carefully slide out the fob battery.

Step 2

Check for a small indentation perpendicular to the valet keyhole. Insert a flathead screwdriver into that space and gently twist. The fob key back casing will come off to reveal the dead battery as soon as you twist.

Step 3

Set aside the back case and carefully lift out the circuit board that houses the battery. Insert a flathead screwdriver into the space between the plastic and the battery and gently pop out the old battery.

Step 4

Now place in the new battery with the positive side(note that the positive side is the part with text) facing up.

Step 5

Set the circuit board back into the casing and click the back casing together with the front case.

Congrats! You’re done with your Toyota 4runner key fob battery replacement.

Toyota 4Runner Key Fob Battery Replacement (2020 - 2021)

This is the battery you need for the Toyota 4Runner “Tombstone” key fob:

Amazon Basics 4 Pack CR2032 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
  • DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • DESIGNED TO LAST: 8-year leak-free shelf life

How to Replace the Toyota 4Runner “Rounded Rectangle” Key Fob Battery (2010-2021)

Watch the video below for a step-by-step tutorial on how to change the battery in your key fob.

What you will need:

  • 1x CR1632 battery
  • Flat-head screwdriver

Step 1

Press the button on the side and pull out the internal valet key. Check for an indentation right across the keyhole. When you find it, click a flathead screwdriver into the indent and twist. The key will come apart in halves as soon as you twist.

Step 2

Carefully set aside the fob casing with the buttons. Now pick up the other half of the key with the circuit board. Gently pry on the circuit board with a flathead screwdriver and lidt up the circuit board.

Step 3

As soon as you lift the circuit board, you’d have access to the dead battery. Hold the lower part of the battery slightly while using the flathead screwdriver to pop out the old battery.

Step 4

Place the new battery in with the positive side facing up. The positive side is the part with texts. Make sure the battery is secure by clicking it in carefully.

Step 5

Return the circuit board to the back casing with the battery facing the casing. Check for the buttonhole on the casing and let the battery sit into it. Pick up the front casing with buttons and click it together with the other part of the key.

Step 6

Place the valet key back in, and your fob key is as good as new!

Toyota 4Runner Key Fob Battery Replacement (2010 - 2021)

This is the battery you need for the Toyota 4Runner “Rounded Rectangle” key fob:

How to Replace the Toyota 4Runner “Triangular Fixed” Key Fob battery (2010-2020)

Keep reading for a step-by-step tutorial or scroll down for a video on how to change the battery in your key fob.

What you will need:

  • 1x CR2016 battery
  • Flat-head screwdriver

Step 1

Insert a flathead screwdriver into the indentation line beside the key ring and twist. Twist gently till you hear a cracking sound and the back piece comes off.

Step 2

You’d have access to an inner piece when the back case comes off. Place the flathead screwdriver in between the front casing and the inner piece and gently pop out the inner piece.

Step 3

Now set aside the front and back casing as you’d be working on the inner piece. Separate the inner piece into halves by inserting a flathead screwdriver into the space between the black and the clear plastic.

Step 4

Use the same flathead screwdriver to slightly pop out the dead battery. Place the new battery into the battery hole with the positive side (the side with texts) up. Push the battery into place.

Step 5

Click the inner piece back together and place it into the front fob key casing. Finally, click the back casing to the rest of the key and your key is all set!

Quite an easy Toyota 4runner key fob battery replacement, wasn’t it?

Toyota 4Runner Key Fob Battery Replacement (2010 - 2020)

This is the battery you need for the Toyota 4Runner “Triangular Fixed” key fob:

Amazon Basics 2 Pack CR2016 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 2-pack of CR2016 lithium coin cells; replacement batteries for small electronic devices
  • DEVICE COMPATIBLE: Powers devices such as watches, calculators, sporting goods, games, medical devices, and more
  • DESIGNED TO LAST: Long-lasting, reliable battery life; performs in extreme temperatures

How to Replace the Toyota 4Runner “Simple” Key Fob Battery (1999-2004)

Watch the video below or keep reading for a step-by-step tutorial on how to change the battery in your key fob.

What you will need:

  • 1x CR2016 battery
  • Flat-head screwdriver

Step 1

Insert a flathead screwdriver into the opening at the top of the fob key and twist gently until the key comes apart in two halves.

Step 2

You’d have access to the old battery when the fob key comes apart in halves. Put the corner of the flathead screwdriver into the indentations at the top of the battery. Get under the battery, and the old battery will pop out.

Step 3

Get rid of the old battery and put in the new battery. Fix in the new one with the positive side facing up. Click the battery in with a finger to ensure it stays in place.

Step 4

Assemble the two halves of the battery back together and press round slightly to ensure a snug fit.

Toyota 4Runner Key Fob Battery Replacement (1999 - 2004)

This is the battery you need for the Toyota 4Runner “Simple” key fob:

Amazon Basics 2 Pack CR2016 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 2-pack of CR2016 lithium coin cells; replacement batteries for small electronic devices
  • DEVICE COMPATIBLE: Powers devices such as watches, calculators, sporting goods, games, medical devices, and more
  • DESIGNED TO LAST: Long-lasting, reliable battery life; performs in extreme temperatures

How to Replace the Toyota 4Runner “Simple 3-Button” Key Fob Battery (1999-2009)

Scroll down for a video or keep reading for a step-by-step guide for an easy Toyota 4runner key fob replacement.

What you will need:

  • 1x CR2016 battery
  • Flat-head screwdriver

Step 1

Insert a flathead screwdriver into the indentation line on top of the fob key and twist. The fob key will come apart in halves when you twist.

Step 2

You can either slide the battery out with your finger or use a flathead screwdriver to gently pop out the dead battery.

Step 3

Put in the new battery with the positive side face up. Reattach the two halves of the fob key together, click round and your key fob is all set!

Easy, peasy, yeah?

Toyota 4Runner Key Fob Battery Replacement (1999 - 2009)

This is the battery you need for the Toyota 4Runner “Simple 3-Button” key fob:

Amazon Basics 2 Pack CR2016 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 2-pack of CR2016 lithium coin cells; replacement batteries for small electronic devices
  • DEVICE COMPATIBLE: Powers devices such as watches, calculators, sporting goods, games, medical devices, and more
  • DESIGNED TO LAST: Long-lasting, reliable battery life; performs in extreme temperatures

How to Replace the Toyota 4Runner “Simple with Light” Key Fob Battery (2000, 2001, 2002)

Keep reading for a step-by-step guide, or scroll down for a video tutorial on how to change the battery in your key fob.

What you will need:

  • 1x CR2025 battery
  • Flat-head screwdriver

Step 1

Search the top of the key for a little slot. Then place a flathead screwdriver into the slot and twist. The key will come apart in two halves when you twist

Step 2

Set aside the back piece as you’d be working on the part with the battery. Hold down the battery and use the corner of the flathead screwdriver to pry the battery out.

Step 3

Now fix in the new battery with the positive side(the part with texts and number) facing up.

Step 4

Finish up by replacing the fob key cover back together. Click the back case back onto the rest of the key and press round slightly to ensure a snug fit.

You can verify if the battery works by testing the key after fixing the battery.

Toyota 4Runner Key Fob Battery Replacement (2000 - 2002)

This is the battery you need for the Toyota 4Runner “Simple with Light” key fob:

Sale
Energizer 2025 Batteries, Lithium CR2025 Battery, 2 Count
  • Energizer 2025 Lithium Coin Battery
  • Delivers long-lasting, dependable performance in specialty devices like heart rate monitors, remotes, keyless entry systems, glucose monitors, toys, and games.Operating temperature:-30C to 60C
  • Holds power for up to 10 years in storage, ensuring you have Lithium Coin Batteries ready when you need them

These are the precision screwdrivers I used to open this key fob in the video:

Sale
6 PCS Precision Screwdriver Sets, Eyeglass Repair Kit Screwdriver, Mini Screwdriver Set, Flat Head and Philips Head Screwdriver Sets, With 6 Different Sizes, Suitable For Watch, Electronic Repairs
  • 1【6 Different Sizes】Precision screwdriver set, The set includes 2 cross sizes (#0,#1); 4 flat head sizes(1.4 mm, 2.0 mm, 2.4 mm, 3.0 mm); mini screwdriver is your daily electronic repair, watch repair, jewelry repair Perfect choice for any other small screws.
  • 2【Rotating Design】Eyeglass repair kit, The end cover adopts a rotating design, which is flexible to rotate, and the gap is tightly combined,and it is comfortable to use. Rotating end cap improves efficiency and is easy to use.
  • 3【High Quality】Our precision screwdriver set is made of high-quality chrome vanadium steel material, hardened carbon steel shaft, black oxidation treatment, durable and corrosion-resistant. The screwdriver is small and very suitable for small screws.

Frequently Asked Questions

What kind of battery does a Toyota 4runner key fob use?

Toyota models use CR2232 Batteries available from retailers and online vendors. These batteries are inexpensive since the price is about $5 per unit. Visit Amazon online services to get good Duracell or Panasonic batteries for your key fob.

What battery do Toyota keys use?

The type of battery your fob car key uses can be found in the owner’s manual of your vehicle. Most Toyota key fobs use the CR 2032 3V battery. You can order a rechargeable battery at virtually any retailer close to your location that sells electronics. You can also buy one online.

Bottom Line

It is wrong to wait and watch till your key fob doesn’t lock and unlock your car door anymore. You should replace the battery immediately after noticing the indicators that indicate a low battery level.