so it looks like my key needs a new battery so my keyless entry can work again. unfortunately, i have no idea what kind of battery i need, where to get it, or how to install it. any chance someone can point me in the right direction to fix this little issue?

 

Very easy to do, Random. Take any key rings off the key, get a flat screwdriver (I used the kitchen screwdriver: a butter knife) and insert it into the indentation that's near the loop in the plastic. Give it a twist and the halves will pop loose and pry open. Pull out the control module, get the knife, coin or what have to to pop off the translucent cover (it's marked on the control module). It takes a lithium coin cell CR2016, about $3. That's it.

 

^^ good post.

Although this is for another toyota, the process is similar to what you see in this video --

 

awesome. thanks guys.