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

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

If your Yaris remote key fob is no longer open doors properly, the cell battery likely needs to be changed. In this article, we explained how to disassembly your car key fob and change a dead battery yourself. If you choose to do it at home near Yaris, follow our instruction, but first make sure you have everything you need before you start.

What size battery does 2003 Toyota Yaris key fob required

Before you start to open remote key fob make sure that you have all recommended tools and materials: CR2016 battery, phillips head screwdriver and flat head screwdriver.
  • phillips head screwdriver
  • flat head screwdriver
  • 1xCR2016 battery

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

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

Carefully try to open your fob with hands or flat head screwdriver. Change CR2016 battery with flat head screwdriver.

Replace old battery with new one CR2016. Be sure to connect the battery the right way around in a circuit. Your key fob will not work if you connect battery wrong way.

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

At this point squeeze fob’s back cover together. Line your case two halves together and assemble it together by hands from top to bottom. Inspect your fob body for gaps. If it is not tightly closed try to repeat last step. Screw fastener in the back of the keyless entry remote.

How to change the battery video guide

Toyota Yaris Key Fob Battery Replacement - EASY DIY

Still not working? Buy new one


Keyless entry remote of Toyota Yaris use 1xCR2016 batteries. Most CR2016 batteries are under $4 depending on the brand, type and size packaging you buy. Take your old battery to the store, with you to find a proper replacement.

Key fob in most of cases reprogramming not required 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 replace battery in your 2003 Toyota Yaris key fob yourself. Most hard part is to open fob’s case. It's pretty easy with our guide.

Dealer service price for replace the battery in fob is from 50 to 600 dollars depending on the make.

Key fob batteries in Toyota Yaris should be changed every 3-4 years, although this will differ based on their amount of use and battery quality. If your keyless entry remote shortened signal strength, you should change batteries before it stop close doors and make trouble for you.

If your auto need multiple clicks to unlock or lock doors, has low key battery indicator on dashboard, signal strength reduced or key fob buttons not working, in most cases battery change inside keyless entry remote needed. Current battery is weak or dead with a high probability, but if it's not fix, remote key fob change or repair required.
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Fob Compatibility:

  2. Models: 2000-2008 Toyota Yaris