How to Open Your 2018 Buick LaCrosse Key Fob and Change Battery

How to Open Your 2018 Buick LaCrosse Key Fob and Change Battery

Remote key fob grant easy access to your LaCrosse. Once the key fob battery is weak or dead you will not to be able close car remotely. In this post, we explained how to open your key fob and replace a weak battery DIY. If you decide to do it at home near LaCrosse, follow our guide, but don't forget to check tools and materials required before you start.

What kind of battery remote key fob require

Replacing battery in keyless entry remote require 1 CR2032 battery and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the type of your fob’s batteries.
  • 1xCR2032 battery
  • flat head screwdriver

Step by step instruction

A coin cell battery installed in the your remote key fob. Open key first, and then try to pry apart the remote key fob.

Delicately try to disassemble your keyless entry remote with flat head screwdriver. Remove 1 CR2032 battery with flat head screwdriver.

Get new battery and install it inside fob’s shell. Be sure to connect the battery the right way around in a circuit. Your remote key fob will not work if you place battery wrong way.

Before assembling keyless entry fob's case, verify that all is functioning by testing buttons on key fob.

At this point squeeze fob’s back cover together. Line your body two halves together and assemble it together by hands from top to bottom. If your fob body firmly closed, we done. If not, repeat the last step.

Video of keyless entry remote opening

Buick key fob battery replacement, version two, updated.

Still not working? Buy new one


Key fob of Buick LaCrosse require 1xCR2032 batteries. Price for CR2032 batteries are under $4-6 depending on the size packaging, type and brand you buy. Take your old battery to the store, with you to find a proper replacement.

Key fob in most of cases do not need to be reprogrammed after battery replace. If your key not working, recheck new battery voltage. If it is not help, read user's manual or contact local dealer.

Yes, you can change battery in your 2018 Buick LaCrosse remote key fob yourself. Most difficult part is to open fob’s case. It's pretty easy with our step by step guide.

Car service cost for replace the battery in key fob is from $30 to as high as $500 depending on the car.

You should change batteries inside remote key fob of modern cars at least once in three years. The lifetime of battery vary on their amount of use, quality and operating conditions.

If your LaCrosse need multiple clicks to unlock or lock doors, fob's battery more than 4 years old, signal strength reduced or has low key battery indicator on dashboard, it's probably battery replace inside key fob required. Installed battery is weak with a high probability, but if it's not help, keyless entry remote replace or repair required.
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Fob Compatibility:

  2. Models: 2017-2019 Buick LaCrosse