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Honda Civic Key Fob Battery Replacement Guide
How to change battery in the key fob remote control of a 9th generation 2012 to 2015 Honda Civic with pictures.

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2013 Civic Key Fob
Back Side of Key Fob
Small Phillips Head Screw
This automotive maintenance tutorial was specifically written to assist owners of the ninth generation (2012, 2013, 2014, 2015 & possibly also the 2016) Honda Civic in changing the battery in the key fob remote control for the keyless entry system.

Owners of other Honda or Acura vehicles such as the Accord, Crosstour, CR-V, CR-Z, Fit, Insight, Odyssey, Pilot, Ridgeline, ILX, TSX, TLX, TL, RLX, RDX and MDX may also find these DIY instructions to be helpful.

A replacement "coin" cell (A.K.A. "button" or "watch") battery is part number CR1616 which is available from various manufacturers such as Panasonic, Sony, GE, Energizer and Maxell.

The tools needed to replace the battery include a small jewelers Phillips head screwdriver and a small flathead screwdriver.

Remove Phillips Head Screw
Phillips Screw Removed
Pull Apart Two Halves
The first step is to turn over the key fob and locate the small Phillips head screw on the rear cover where it meets the metal ignition key.

Carefully loosen the screw by turning it counterclockwise with the Phillips head screwdriver.

Try to avoid stripping the screw.

Set the screw aside in a safe place.

Gently pull apart the two halves of the key fob.

Back Cover Removed
Remove Remote Unit
Gently Pry Out Retaining Clip
Remove the back cover and pull out the remote control unit.

Use the small flathead screwdriver to gently pry back the retaining clip located below the red "Panic" button.

Remote Unit Separated
Pry Out Old Battery
Old Battery Removed
Separate the two pieces of the remote control unit.

Carefully pry out the old battery in the back cover of the remote control unit with your fingertip or use the flathead screwdriver.


Panasonic CR1616 3V
Insert New Battery
"+" Side Facing Down
Insert a new CR1616 3 volt coin cell battery in to the socket with the "+" positive side facing down and the "-" negative side facing up towards you.
Line Up Back Cover
Snap Together Remote Unit
Insert Remote In Front Cover
Line up the back cover of the remote control unit and snap the two halves together.

Line up the buttons on the remote control unit with their corresponding holes in the front of the fob.

Remote Unit Inserted
Line Up Key Fob Rear Cover
Snap Together Two Halves
Snap the back cover over the front part of the key fob.
Tighten Phillips Head Screw
Key Fob Re-Assembled
Test New Key Fob Battery
Insert the Phillips head screw and tighten it in the clockwise direction until it is snug.

Avoid over tightening the screw to prevent from stripping the threads.

To test the new key fob battery, stand next to your Civic and press the "Unlock" or "Lock" buttons. If the battery is working properly, you should see the parking lights flash and hear the door locks opening or closing.

For more, check out my other 2012-2015 Honda Civic DIY Repair & Maintenance Guides.

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