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Buick LaCrosse Key Fob Battery Replacement Guide
How to change the battery in the key fob remote control for a 2nd generation 2010 to 2016 Buick LaCrosse sedan.

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2016 LaCrosse Key Fob
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Back of Key Fob
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Press Chrome Button

This automotive maintenance tutorial was specifically written to assist owners of the second generation (2010, 2011, 2012, 2013, 2014, 2015 & 2016) GM Buick LaCrosse sedan in changing the battery in the key fob remote control for the keyless entry system.

Owners of other General Motors vehicles such as the Chevrolet Impala, Monte Carlo, Malibu, Spark, Sonic, Cruze, Volt, SS, Camaro, Caprice, Corvette, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Buick Verano, Regal, Cascada, Encore, Enclave, Envision, GMC Canyon, Sierra, Terrain, Acadia, Yukon, Savana, Cadillac CT6, ATS-V, ATS, ELR, CTS, XTS, XT5, SRX, Escalade and Holden Commodore may also find these DIY instructions to be helpful.

A replacement coin cell (A.K.A. "button" or "watch") battery is part number CR2032 which is available from various manufacturers such as Panasonic, GE, Maxell, Energizer, Sony, Duracell and Sanyo.

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Release Metal Ignition Key
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Thumb In Notch
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Pry Off Battery Cover
No tools are required to access and replace the key fob battery.

The first step is to press the chrome silver button on the front of the key fob to release the metal ignition key.

Then place your thumb in to the empty crevice where the key used to reside and firmly pull off the battery access cover.

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Gently Pry Out Old Battery
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Old Battery Removed
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Panasonic CR2032 3V
Either turn over the key fob and tap out the old battery or very carefully use a small flathead screwdriver to gently pry it out.



 

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Insert New Battery
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"+" Positive Side Facing Up
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Line Up Plastic Cover
Insert a new # CR2032 3 volt coin battery in to the socket with the "-" negative side facing down and the "+" positive side facing up towards you.

Line up the plastic battery cover over the rear of the key fob case.

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Snap Cover Closed
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Flip In Switchblade Key
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Test New Key Fob Battery
Gently snap the battery cover closed.

Make sure that the battery cover is securely in place and flush with the rest of the fob at every edge.

To test the new key fob battery, stand near your LaCrosse 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.

For more, check out my other 2010-2016 Buick LaCrosse DIY Repair & Maintenance Guides.
 

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