How to Replace the Battery in a 2015 Toyota Corolla Key Fob

How to Replace the Battery in a 2015 Toyota Corolla Key Fob

Remote key fob grant access to your Toyota. If the remote key fob battery is weak or dead you lose your keyless entry fob's ability to control distance functions. Yes, it is possible to replace the battery in your remote key fob, and it’s easier than you think. Everything you need is described in this post.

What is the battery key fob use

Before going to open keyless entry remote check all that you need: one CR2032 battery and flat head screwdriver.
  • 1xCR2032 battery
  • flat head screwdriver

Simple steps to replace the battery in your Corolla's keyless entry remote

Inside of your keyless entry remote installed tiny button cell battery. Remove any internal key before you try to pry apart the key fob.

Carefully try to disassemble your key with pry tools. Replace 1 CR2032 battery with flat head screwdriver.

Replace old battery with new one CR2032. Every battery has a negative and positive side and if you put the wrong connector down, the current cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.

Before assembling fob’s case, verify that all functions works by testing buttons on circuit board.

The last thing to do is put your cover back on fob. Carefully try to assemble the two halves together by hands from top to bottom. Check your remote key fob case for gaps. If it is not tightly closed try to repeat last step.

Video of keyless entry remote disassembly

How to replace Toyota Corolla Key Fob Battery 2015 - 2020

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Toyota Corolla require 1xCR2032 batteries. Most CR2032 batteries are under $6 build upon the type, size packaging and brand you buy. Take your old battery to the store, with you to find a proper replacement.

Often, after keyless entry remote battery change, reprogramming not required. Don't be scare of this procedure, because often it's described in user's manual.

Changing your key fob battery is easy to do in 2015 Toyota Corolla. Most of car manufacturers think of the clients and make a special hole for keyless entry remote open.

The price to change the battery in key is from $30 to as high as $500 depending on the make and the service pricing.

Remote key fob batteries in Toyota Corolla should be replaced once in three or four years, but this will differ based on their amount of use and quality. If your keyless entry remote reduced signal strength, you should change batteries before it stop open doors and make trouble for you.

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

  1. FCC ID: HYQ14FBA
  2. Models: 2014-2020 Toyota Corolla