How to Replace the Battery in a 2000 Toyota Prius Key Fob

If your Prius remote key fob is no longer open doors properly, the cell battery likely must to be replaced. Below, we outlined how to open your keyless entry remote and replace your Toyota key battery step by step.
What is the battery remote key fob require
Before you start to open key fob make sure that you have all required tools and materials: phillips head screwdriver, flat head screwdriver and 1xCR2016 battery.- flat head screwdriver
- 1xCR2016 battery
- phillips head screwdriver
Step by step guide
A button cell battery installed in the your key fob. Unscrew the back of the remote key fob. Flip the keyless entry remote over and look for at least 1 screw holding in the plastic.
Gently try to disassemble your key with flat head screwdriver. Remove CR2016 battery with flat head screwdriver.
Get new battery and install it inside fob’s shell. 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 position on battery, by "+" mark.
Before assembling keyless entry fob's case, verify that all functions works by testing buttons on circuit board.
At this point squeeze fob’s back cover together. Line your case pieces together and assemble it together by hands from top to bottom. Check your keyless entry remote body for gaps. If it is not firmly closed try to repeat last step. Screw the back of the remote key fob.
Key Fob Battery Replacement 2000 Toyota Prius Video
Toyota Prius Key Remote Battery Replacement 2004 - 2009 - DIY
Still not working? Buy new one