How to Replace the Battery in a 2003 Toyota Prius Key Fob

How to Replace the Battery in a 2003 Toyota Prius Key Fob

Keyless entry remote grant access to your Prius. If the key battery is discharged you will lose your fob’s ability to use distance opportunities. In this article, we explained how to open Toyota remote key fob and change a discharged battery yourself. If you choose to do it at home near Prius, use this guide, but first make sure you have everything you need.

What is the battery key fob require

Before beginning open keyless entry remote check all that you need: CR2025 battery, phillips head screwdriver and flat head screwdriver.
  • phillips head screwdriver
  • 1xCR2025 battery
  • flat head screwdriver

Step by step guide

Inside of your keyless entry remote installed button battery. Remove fasteners on the back of the remote key fob. Spin the key fob over and find for at least one fastener holding in the plastic.

Delicately try to pry apart your key with hands or flat head screwdriver. Remove one CR2025 battery with flat head screwdriver.

Replace old battery with fresh one CR2025. 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 fob’s case, verify that everything is functioning by testing buttons on key fob.

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

How to change the battery video instruction

Toyota Prius Key Remote Battery Replacement 2004 - 2009 - DIY

Still not working? Buy new one


Keyless entry remote of Toyota Prius use 1xCR2025 batteries. Price for CR2025 batteries are under $6 depending on the type, brand and size packaging you buy. Take your old battery to the store, to be sure.

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

Changing your remote key fob battery is simple to do in 2003 Toyota Prius. Most of car manufacturers think of the clients and make a special hole for keyless entry remote open.

Car service cost for replace the battery in keyless entry remote is from 50 to 600 dollars depending on the car.

You should replace batteries inside key fob of modern cars at least every 3-4 years. lifespan of battery differ on their amount of use, quality and operating conditions.

These signs will warning you that it's perhaps time to change battery in your 2003 Toyota Prius: multiple clicks to unlock or lock doors required, signal strength reduced, key fob buttons not working and you didn't change battery more than 4 years.
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Fob Compatibility:

  1. FCC ID: BAB237131-056
  2. Models: 2001-2003 Toyota Prius