How to Replace the Battery in a 2004 Toyota Corolla Key Fob

How to Replace the Battery in a 2004 Toyota Corolla Key Fob

Keyless entry remote allow easy access to your auto. If the key battery is discharged you not to be able open trunk or doors remotely. It's not difficult to change the battery in your key fob DIY. Everything you need is described in this post.

What is the battery keyless entry remote use

Don't forget before open keyless entry remote check all that you need: 1xCR2025 battery, phillips head screwdriver and flat head screwdriver.
  • phillips head screwdriver
  • flat head screwdriver
  • 1xCR2025 battery

Simple steps to replace the battery in your car's key fob

A tiny button cell battery installed in the your remote key fob. Remove fasteners on the back of the remote key fob. Flip the remote key fob over and find for at least 1 screw holding in the plastic.

Delicately try to open your fob with hands or flat head screwdriver. Replace 1 CR2025 battery with flat head screwdriver.

Change old battery with fresh one CR2025. Battery must be installed with the same polarity as was a previous. Your key will not work if you by mistake place battery wrong way.

After the new battery installed, verify keyless entry remote functionality by pressing buttons. If everything working properly, assemble your keyless entry fob's shell in reverse order.

At this point squeeze fob’s back cover together. Line your body pieces together and put it together by hands from top to bottom. If your key fob body tightly closed, we done. If not, repeat the last step. Screw fastener in the back of the remote key fob.

Video of key disassembly

How to â—Ź Toyota Key Fob Remote Keyless Battery Change/Replace

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Toyota Corolla require 1xCR2025 batteries. Price for CR2025 batteries are under $6 depending on the size packaging, brand and type you buy. You can take old battery to the store, with you to find a proper replacement.

Usually, after key fob battery replace, reprogramming not required. Don't be scare of this procedure, because often it's described in user's manual.

Yes, you can change battery in your 2004 Toyota Corolla key fob yourself. Most hard part is to open fob’s case. It's pretty simple with our guide.

Car service pricing for change the battery in key is $50-600 depending on the make.

You should change batteries inside keyless entry remote of modern cars at least once in three or four years. The lifetime of battery differ on usage time, operating conditions and quality. Lithium cells usually will last longer.

If your Corolla fob's battery more than 4 years old, signal strength reduced, need multiple clicks to unlock or lock doors or key fob buttons not working, it's probably battery change inside remote key fob needed. Currently installed battery is dead or weak with a high probability, but if it's not help to fix issues, key change or repair required.
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Fob Compatibility:

  1. FCC ID: BAB237131-056
  2. Models: 2003-2006 Toyota Celica