Paul's Travel Pictures

Toyota 4Runner Key Fob Battery Replacement Guide
How to change a dead battery in the key fob remote control of a 5th generation 2010 to 2016 Toyota 4Runner.

Main Menu            Home           Digital Cameras

Misc. Pictures            Articles            My Blog

2015 4Runner Key Fob
Back Side of Key Fob
Notch - Bottom Left
This automotive maintenance tutorial was specifically written to assist owners of the fifth generation (2010, 2011, 2012, 2013, 2014, 2015 & 2016) Toyota 4Runner SUV in changing a dead battery in the key fob remote control for the keyless entry system with the standard metal key ignition switch.

Owners of other Toyota, Lexus or Scion vehicles such as the Yaris, Corolla, Matrix, Prius, Camry, RAV4, Sienna, Tacoma, Tundra, FJ Cruiser, Venza, Highlander, Avalon, Sequoia, Land Cruiser, IS 250, ES 350, GS 350, tC, xB, xD, iQ and FR-S may also find these DIY instructions to be helpful.

A replacement coin cell (A.K.A. "button" or "watch") battery is part number CR2016 which is available from various manufacturers such as Panasonic, Sony, GE, Energizer, Duracell and Maxell.

The only tool needed to access and replace the key fob battery is a small flat head screwdriver such as in a jewelers screwdriver set.

Note - If your Toyota 4Runner has the "smart" or "intelligent" key fob with the push button "START" ignition system, your fob requires the CR1632 coin cell battery.

Please visit my Toyota Smart Key Fob Battery Replacement Guide for specific instructions for changing the battery in your fob.

Insert Flathead Screwdriver
Pry Off Back Cover
Pull Out Remote Control
The first step is to separate the combination metal ignition key and key fob remote control from your other keys and the key ring.

Then locate the small notch on the bottom left of the key fob near the key loop.

Insert a small flathead screwdriver in to the notch and gently pry apart the rear cover of the key fob.

Lift the remote control unit out of the front part of the key fob housing.

Gently Pry Back Cover
Black Plastic Case
Back Cover Removed
To access the battery socket, you'll need to gently pry off the black plastic rear cover from the remote control unit.

Gently pry back the edges of the black plastic cover from their retaining tabs.

You may need to re-insert the flathead screwdriver in several different spots to lift the remote control unit out of the black plastic housing.

Gently Pry Out Old Battery
Old Battery Removed
Panasonic CR2016 3V
Either lift out the old battery with your finger nail or carefully pry it out with the flathead screwdriver.

Try to avoid damaging the metal electrical contacts with the screwdriver.

The OEM battery was a Panasonic CR2016 3 volt cell.


Insert New CR2016 Battery
New Battery Installed
Pop On Black Plastic Cover
Lower a new CR2016 coin cell batter in to the holder with the "-" negative side facing down and the "+" positive side facing up towards you.

Make sure that the new battery is securely in the socket.

Line up the black plastic cover over the remote control unit.

Remote Re-Assembled
Lower Remote In Fob
Remote Unit Replaced
Gently snap the black plastic cover on to the remote control unit.

Lower the remote control unit back in to the front part of the key fob housing.

Line Up Key Fob Cover
Snap Together Key Fob
Test New Battery
Line up the rear cover of the key fob with the front part.

Gently push together the two halves of the key fob until they are flush against each other.

To test the new key fob battery, stand near your 4Runner and press the "Unlock" or "Lock" buttons.

If the new battery is working properly, you should see the parking lights flash and hear the door locks opening or closing.

Be sure to record the battery change in your vehicle's service records.

For more, check out my other 2010-2016 Toyota 4Runner DIY Repair & Maintenance Guides.

If you found this guide to be helpful, please consider making a small donation by clicking on the "Donate" button located to the right of this paragraph. Thank you!
(Note: I am not a registered charity. Donations are not tax deductible.)

Main Menu       Home       Digital Cameras

Misc. Pictures       Articles       My Blog


Copyright 2021
 All Rights Reserved

Paul's Travel Pictures is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to

Privacy Policy     About Paul & Author Contact Info