Does the battery in your Highlander’s key fob need to be replaced? Well, I have great news for you… It’s really easy to swap it out. Just grab yourself a CR2032 coin-style battery and keep reading…
Once you have the battery in hand, it’s just a matter of popping open the key fob and replacing the old battery. I did this recently while troubleshooting my door lock problems, and I snapped a few pics along the way.
For starters, you’ll need to slide the physical key out of the fob. In case you weren’t aware, you can do this by pressing the little button marked “PUSH” on the side of the fob and then slide the key (attached to the ring) out.
From there, slip the tip of the key blade into the slot at the top of the fob and twist. Note that this slot is obscured when the key is inserted into the fob.
Now that the fob is open, you just need to pop out the little circuit board to access the battery. You may need to insert the tip of the key (or something else small) at the notch in the lower corner and gently pry it up.
And there you have it… Just pop out the CR2032 battery, replace it with a new one, and reassemble your key fob. See? Very easy.
Beware: CR2032 vs. CR2025
The CR2032 and CR2025 are both coin-style, 3V lithium batteries with identical diameters, but they’re not the same. The CR2025 is a bit thinner than the CR2032. Aside from having slightly lower capacity (240 mAh vs. 163 mAh), this means that the CR2025 doesn’t fit in all the same devices.
While it might be possible to “shim” the CR2025 to make it work in a pinch, you’re much better off buying the CR2032 and getting a perfect fit. Since the shelf life on lithium batteries of this sort is typically 10+ year, you might want to just pick one up and stick it in the glove box for future use.