How to Replace the Battery in a 2002 Toyota 4Runner Key Fob

How to Replace the Battery in a 2002 Toyota 4Runner Key Fob

If your 4Runner remote key fob is no longer open doors well, the battery most likely must to be changed. In this post, we explained how to open your car keyless entry remote and replace your Toyota key battery step by step.

What is the battery keyless entry remote require

Changing battery in remote key fob require 1 CR2025 battery, phillips head screwdriver and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the type of your fob’s batteries.
  • 1xCR2025 battery
  • flat head screwdriver
  • phillips head screwdriver

Step by step instruction

Inside of your keyless entry remote installed tiny button battery. Unscrew the back of the remote key fob. Flip the key fob over and look for at least 1 screw holding in the plastic.

Gently try to open your key with flat head screwdriver. Change one CR2025 battery with flat head screwdriver.

Replace old battery with new one CR2025. Be sure to connect the battery the right way around in a circuit. Your remote key fob will not work if you put battery wrong way.

After the new battery installed, check remote key fob functionality by pressing buttons. If all functions works, assemble your fob’s shell in reverse order.

The last thing to do is put your cover back on fob. Gently try to put the pieces in place by hands from top to bottom. If your key fob case tightly closed, we done. If not, repeat the last step. Screw the back of the key fob.

Video of keyless entry remote disassembly

How To Replace Toyota 4Runner Key Fob Battery 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Still not working? Buy new one

Frequently Asked Questions

Key fob of Toyota 4Runner use 1xCR2025 batteries. Most CR2025 batteries are under $4-6 depending on the type, size packaging and brand you buy. You can take old battery to the store, to find a proper replacement.

Remote key fob in most of cases do not require to be reprogrammed after battery replace. If your key fob not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Changing your keyless entry remote battery is easy to do in 2002 Toyota 4Runner. Most of car manufacturers think of the clients and make a special hole for key fob disassembly.

The cost to replace the battery inside remote key fob is in range from $30 to as high as $500 depending on the brand and the service pricing.

Key fob batteries in Toyota 4Runner should be replaced once in three or four years, although this will vary based on usage and battery quality. If your key fob decreased signal strength, you should replace batteries before it stop close doors and make problems for you.

If your auto signal strength reduced, fob's battery more than 4 years old, need multiple clicks to unlock or lock doors or has low key battery indicator on dashboard, it's probably battery change in remote key fob needed. Currently installed battery is dead or weak with a high probability, but if it's not help, fob replace or repair needed.
Be the first to comment.
Your message is required.

Fob Compatibility:

  1. FCC ID: BAB237131-056
  2. Models: 2000-2003 Toyota 4Runner